PARTING AND GROOVING

Introduction B2

APPLICATIONS
Getting started B3

External B 12

Internal B 38

Trouble shooting B 47

PRODUCTS
CoroCut® 1- and 2-edge B 50
CoroCut® 3-edge B 52
T-Max® Q-Cut B 54
CoroCut® SL B 58
T-Max U-Lock® 154.0 B 60
T-Max® ceramic B 61
CoroCut® XS B 62
CoroTurn® XS B 63
CoroCut® MB B 65

Extended offer B 67

Grade information B 70

B1

TH_B01-B37.indd 2 2009-06-10 09:31:20 TH_B01-B37.indd 1 2009-11-24 08:31:02

 A
General turning Parting and grooving – introduction

B
Parting and grooving

C
Threading

D
Milling

Introduction
Drilling

F Parting and grooving form a turning category over a

wide range of machining applications that require Trends
dedicated tools. These tools can to some extent be
used for general turning. Machines and machining methods

Grooves can also be made through milling, due to the •M

 ore multi-task machining – use the CoroCut SL modular system
to reduce the number of tools and the change-out time.
Boring

development of multi-task machines and machining

centres, which are used in combination with complex, •H
 igher spindle speeds – use our first choice grade GC1125 to
asymmetric components. run at higher cutting speeds.
G The flexible CoroCut 1- and 2-edge system is the most • High pressure coolant – to improve chip evacuation and tool life.
common system on the market. The wide range of the
CoroCut 2-edge inserts in grade GC1125 covers most Components and materials
applications and materials.
Tool holding/

•E
 nvironmental concerns increase the demand for lighter and
Machines

This chapter covers the wide range of parting and stronger components for extended use in corrosive environments.
grooving applications and gives practical tips. •G
 rooving more high-alloyed, high strength and non-corrosive
materials means more optimized tools and inserts are also
H required.
Materials

I
Information/

B2
Index

TH_B01-B37.indd 2 2009-11-24 08:31:03

 Parting and grooving – getting started A

Getting started

General turning
Parting and grooving methods

External or internal parting and grooving B

For parting and grooving, Sandvik Coromant offer several tool systems intended for

Parting and grooving

external as well as internal machining. In many cases, the same tool system can
be used.
Parting off
For parting off operations, Sandvik Coromant offers a wide range of tools and inserts,
covering bar diameters up to 112 mm. See page B 14.
General grooving
Single cut grooving and multiple grooving are the general methods for grooving. Single cut
C
grooving is an economical and productive method. Multiple grooving is the best method
for rough grooving, or when the cutting depth is greater than the width. See page B 19.
Turning

Threading
The most common applications for wide grooves or turning between shoulders include:
multiple grooving, plunge turning and ramping. All three methods are roughing operations
and have to be followed by a separate finishing operation. See page B 32.
Other grooving methods D
Circlip grooving, face grooving, profiling and undercutting are other grooving methods that
perform special cutting operations.
Circlip grooving is used to make a circlip groove on a shaft or in a bore. See page B 23.
Face grooving is used to make a groove on the face of a component. See page B 25.

Milling
Profiling is used to profile various shapes on a component. See page B 29.
Undercutting is used to make a recess for clearance, such as for subsequent threading E
on a shaft or in a bore. See page B 36.
Internal parting and grooving, see page B 40.
Milling
Parting off a component or making a circlip groove on a non-rotating component, can also

Drilling
be done with a milling cutter such as CoroMill 327 and CoroMill 328.
The milling method can be a good alternative when the component has an asymmetric
operation, or to minimize the number of operations. See Milling, Chapter D. F

Boring
G
Tool holding/
Machines

Choice of method
Three different areas should be considered to determine the best method and tooling solution.

H
Materials

1. Parting and grooving component feature 2. Component material, shape and quantity 3. Machine parameters
I
Information/

B3
Index

TH_B01-B37.indd 3 2009-11-24 08:31:15

 A
General turning Parting and grooving – getting started

Initial considerations

1. Component feature
Analyse the dimensions and quality demands of the groove or face to be machined:
B
• T ype of operation (external or internal adaptation, e.g. parting off, general grooving,
Parting and grooving

turning, circlip grooving, face grooving, profiling or undercutting). Operation type

affects the tool choice.
• Cutting depth.
• Cutting width.
• Corner radius.
C • Quality demand (tolerance, surface finish).
• Wiper design insert to reach surface finish?
Threading

2. The component
D After analyzing the feature, it’s time to look
at the component:
•D
 oes the material have good chip breaking
qualities?
Milling

•B
 atch size – a single groove or mass
production of grooves? Mass production
justifies an optimized Tailor Made tool to
E maximize productivity.
• Can the component be fixed securely?
• Chip evacuation.
Drilling

F
Boring

3. The machine
G Finally, a look at some important machine considerations:
• Stability, power and torque, especially for larger components.
• Cutting fluid and coolant.
Tool holding/
Machines

• Is there any need for high pressure coolant for chip-breaking in long
chipping materials?
• Tool changing times/number of tools in turret.
H • rpm limitations, bar feed magazine.
• Sub spindle, or tail stock available?
• Use all possible support.
Materials

I
Information/

B4
Index

TH_B01-B37.indd 4 2009-11-24 08:31:16

 Parting and grooving – getting started A

General turning
Choice of method – example
Parting and grooving operations could be done in several ways, using one or several
working operations.
The example operation involves making chamfered corners on a component.
One way to do the chamfer, is to use the corners on, for example, a CoroCut GF B
insert. The first cut makes the groove, the second and third cuts are the chamfers.

Parting and grooving

A better way in mass production is to order a Tailor Made insert with the exact
chamfer form. Now the whole operation can be made with only one cut.

General grooving Chamfer grooving

Threading
D

Milling
Advantages Advantages
E
• Standard insert • Tailor Made insert
• Flexible • Fast way to make a chamfer grooving

Disadvantages Disadvantages

Drilling
• Longer machine time • Less flexible

High productivity,
Standard operation
long series production

Boring
G

Choice of geometry and grade

Tool holding/

1. All-round insert 2. Optimized insert

Machines

CoroCut 2-edge is based on a patent rail-shape design for Optimized geometry and grade are used to make a cut in,
maximum stability. The GF geometry in the GC1125 grade is e.g. a long-chipping material or a hardened material. For long-
a perfect choice for all-round operation because it offer good chipping materials, we recommend the CoroCut 2-edge in
chip control and surface finish. GM geometry; and for hardened materials, the GE geometry. H
The CoroCut 2-edge is available in several dedicated grades for
different materials. The insert can be ordered as Tailor Made.
Materials

I
Information/

B5
Index

TH_B01-B37.indd 5 2009-11-24 08:31:16

 A
General turning Parting and grooving – getting started

Tool holding selection

Parting and grooving places high demands on accessibility, because the inserts
are often fed deep into the material. This means narrow machining: the length of
the tool increases as the component diameter increases. Tools and tooling systems
B with high stability are therefore very important.
For best productivity and cost efficiency, we recommend the Coromant Capto system,
Parting and grooving

or the new modular blade system, CoroCut SL.

Coromant Capto offers exceptional accuracy and stability, and also a full program of
clamping units, cutting units and adaptors. See Tool holding/Machining, Chapter G.
CoroCut SL offers a large variety of blades so that you can build your own holder for
these areas. For more information, see CoroCut SL, page B 58.
C
Threading

D
Avoid tool vibration
Vibration tendencies and tool deflection are devastating Max.
hazards to tool life. To minimize this risk, choose: ar
• a blade or tool holder with the shortest tool overhang ar
Milling

• maximum tool holder shank dimension

•a
 blade height equal to or larger than the blade insertion
E length
•a
 blade or holder with maximum blade width (largest
possible insert seat size)
• use light cutting geometries and/or sharp insert edges
Drilling

Reinforced blade Screw clamp holder

• use recommended feed/speed.
Note: D
 o not use a blade for turning operations.
F The use of a reinforced holder will increase stability.
Boring

G
To obtain perpendicular surfaces in the cut and to reduce the ±0.1 mm
risk of vibration tendencies, the tool holder should be mounted
Tool holding/

at:
Machines

• 90 degrees to the centre-line of the component

• the best set-up possible; the centre height should not be off
H by more than ±0.1 mm, especially when parting off bars and
grooving components with small diameters. This affect the
cutting forces and the pip formation.
Materials

I
Information/

B6
Index

TH_B01-B37.indd 6 2009-11-24 08:31:17

 Parting and grooving – getting started A

General turning
Insert clamping in tool holder
The CoroCut family has two different insert clamping systems.
•C
 oroCut in insert seat size D-G and all Q-Cut insert seat sizes, have a V-shaped
design, which gives very secure clamping for parting and grooving applications.
B
•C
 oroCut in insert seat size H-L, has a unique rail-design, which adds superior

Parting and grooving

stability to the insert clamping.
The rail system should be first choice for profiling and turning applications (that
V-shape Rail-shape
generate side forces); it offers increased cutting data and highest stability.
CoroCut – less than CoroCut – Over
approx. 3 mm approx. 4 mm
all Q-Cut
C

Threading
Screw clamping
All our solid tool holders/bars have integrated screw clamping.
This offers very stable and secure clamping of the insert and is
recommended for applications where large cutting forces arise D
(together with the rail insert seat).
This is particularly important when combined with large cutting
depths, such as in longitudinal turning, profiling and face grooving.
The recommended torque values for the clamping screws are listed

Milling
in the tool tables and should be used without over-tightening.
See Main catalogue.
E

Drilling
Spring clamp
Parting blades have deep accessibility in narrow areas due to spring
F
clamping. This allows for quick and easy clamping and loosening in
the same operation, due to an eccentric key.
Note: The key is different between CoroCut and Q-Cut. Always make
sure to use the right key.

Boring
CoroCut:
1. Mount the eccentric key in the corresponding recess of the blade slot. G
2. Open the tip seat (lift the key) as you push the insert in or out of the CoroCut
pocket.
Tool holding/

Q-Cut:
Machines

1. Mount the eccentric key in the corresponding recess of the blade slot.
2. Push the insert in or out of the pocket.

H
Materials

Q-Cut

I
Information/

B7
Index

TH_B01-B37.indd 7 2009-11-24 08:31:18

 A
General turning Parting and grooving – getting started

Check the insert seat

It is important to ensure that the insert seat has not been damaged during
machining or handling. Make sure that the insert seat is free from dust or
metal chips produced by the machining. If necessary, clean the insert seat
with compressed air.
B
Parting and grooving

Torque wrench
C To get the best performance out of each tool holder with screw clamp, a torque
wrench should be used to correctly tighten the insert.
Torque that is set too high will affect the performance of the tool negatively and
cause insert and screw breakage.
Threading

Torque that is set too low will cause insert movement, vibrations, and degrade
the cutting result.
See Main catalogue to get the correct insert tightening torque.
D
Milling

Clamping screws
E First of all, use a torque wrench to tighten the screws to the correct torque.
Apply sufficient screw lubrication to prevent seizure. Lubricant should be applied to
the screw thread as well as the screw head face.
Replace worn or damaged screws.
Drilling

Cutting fluid and coolant

Boring

Chip evacuation and cooling and lubricating between the tool and the workpiece
material are primary functions of cutting fluid, and all affect the cutting quality and
G the tool life.
Coolant recommendations:
•U
 se high pressure (minimum 10 bar up to 70 bar) coolant containing 5-8 %
Tool holding/

soluble oil.
Machines

• T he cubic capacity of the coolant tank should be 5-10 times greater than the
volume of coolant that the pump supplies per minute.
H •A
 copious supply of cutting fluid, directed exactly at the cutting edge, should be
used from the moment the insert is engaged and throughout the operation.
• Use wet cutting if possible.
Materials

I
Information/

B8
Index

TH_B01-B37.indd 8 2009-11-24 08:31:18

 Parting and grooving – getting started A

General turning
Chip control
Improved chip evacuation is achieved by improving chip formation. Poor chip
formation is signaled by excessively long chips. These may cause chip jamming,
resulting in poorer surface finish and tool breakage, especially when grooving into
small holes.
B
Problems in poor chip formation may be caused by:

Parting and grooving

• the workpiece material
• the wrong geometry
• the wrong cutting data
• the wrong working method. Use dwelling (micro stops) to break the chip in long-
chipping materials. However, this method will reduce the tool life.
C
One way to improve chip evacuation is to mount the tool upside down.
To achieve chip-breaking in long-chipping materials, such as titanium alloys, and to
prolong the tool life, we recommend that a CoroTurn HP high pressure coolant is
installed in the machine. See General turning, Chapter A.

Threading
Good

D
Bad

Hard part machining H

Milling
Modern manufacturing technology places increasing demands on components to be
made in one set-up, creating the need for machining hardened components.
Cutting tool materials such as CBN (cubic boron nitride) act as a productivity booster E
when turning is used instead of grinding. For CoroCut 1-edge a small piece of CBN is
brazed into a carbide body, making it possible to groove and profile in hardened
components. Both hardened as well as induction hardened components with
hardness from 50–65 HRc can be machined.

Drilling
We recommend CoroCut inserts with geometries GE for grooving and RE for profiling.
For grooving in smaller holes CoroCut XS and CoroCut MB are available with CBN-
tipped inserts.
F
They are suitable for both continuous and interrupted cuts and designed to achieve
good surface quality and to keep close tolerances.

Boring
Machining aluminium and non-ferrous material
N
Many components are made of aluminium or other non-ferrous materials such as copper, G
brass, bronze and plastic materials.
A common feature with these materials is that a sharp edge and an open chip breaker
Tool holding/

are needed to be successful.

Machines

To achieve these sharp edges, the edge line usually has to be ground and the carbide
needs to be uncoated, or have a thin coating.
We recommend CoroCut GC1005 as first choice for roughing operations.
H
For components demanding an extremely high surface finish, a diamond tipped CD10
insert is recommended; it provides the possibility for using high cutting data and
ensures long tool life.
Materials

I
Information/

B9
Index

TH_B01-B37.indd 9 2009-11-24 08:31:21

 A
General turning Parting and grooving – getting started

Heat resistant super alloys (HRSA) – grooving

HRSA falls into three groups; nickel-based, iron-based and cobalt-based alloys. The physical
properties and machining behaviour of each group varies considerably. Whether the metal is S
annealed or aged is particularly influential on the subsequent machining properties, as the
hardness varies from 150 to 440 HB.
B The machinability of HRSA is generally poor compared to both general steels and stainless
Parting and grooving

steels.
We recommend CoroCut 1- and 2-edged inserts with PVD coating for medium finishing
machining, and an MTCVD grade for roughing.
For higher cutting speeds, a ceramic insert will drastically improve productivity.

C Titanium alloys – grooving

Titanium alloys are typically machined in the annealed or solution treated and aged conditions,
when hardness can vary between 250-440 HB.
The machinability is poor compared to both general steels and stainless steels, which imposes
Threading

particular demands on the cutting tools.

We recommend CoroCut 1- and 2-edge inserts with sharp edge in an uncoated grade.

D To achieve good chip-breaking in long-chipping materials, such as titanium alloys, and to prolong
tool life, we recommend installing a high pressure coolant in the machine. See Tool holding/
machines, Chapter G.
Milling

E
Drilling

Safety precautions
F Chips are very hot and have sharp edges! They should not be moved with bare hands. Chips can cause burns to the
skin or damage to the eyes.
Be sure that the insert and component are tight and secured in the holder to prevent loosening during use. Too much
overhang can result in vibration and tool breakage.
Boring

G
How to achieve good quality
Good quality in parting and grooving is mainly dependent on the tool system and its behaviour with the cutting material.
Tool holding/

However, tool maintenance is also important for the final machining result.
Machines

• Tool, insert geometry and grade affect the cutting quality. Wiper inserts improve the surface finish.
• Use correct feed rates for the insert and the material.

H • Use a tool holder with a short overhang to avoid vibrations, use a sub-spindle if available.
• Chip breaking and chip evacuation must be satisfactory.
• Maintain the tools. Change the insert clamping screw regularly. Use a torque wrench.
• Establish a pre-determined tool life program.
Materials

I Namnlöst-1 1
Information/

B 10
Index

TH_B01-B37.indd 10 2009-11-24 08:31:23

 Parting and grooving – getting started A

General turning
Definitions

The workpiece rotates at a certain number of revolutions per

minute. This provides a specific cutting speed vc (or surface
speed) measured in [m/min] at the cutting edge. Normally, B
cutting speed is set as a constant value, which leads to

Parting and grooving

variations in rpm as the machined diameter changes.

The tool movement in direction X and Z is called feed rate

(fn), or fnx/fnz [mm/rev]. When feeding towards centre (fnx),
the rpm will increase until it reaches the rpm limit of the
machine spindle. When this limitation is passed, the cutting
speed vc will decrease until it reaches 0 m/min at the
C
component centre.

The feed has a great influence on chip formation, chip

Threading
breaking, and thickness, and also influences how chips
form in the insert geometry. In sideways turning or profiling
(fnz), the depth of the cut (ap) will also influence chip
formation. D

Feed (fn) and depth of cut (ap) have the largest affect on
productivity.

Milling
E

Drilling
Namnlöst-1 1
F
2009-08-31 09:29:34

Boring
G
Tool holding/
Machines

Tool life in parting and grooving

Predictable and consistent tool life is essential for successful
parting and groving. However, it is difficult to set any values for H
this because tool life depends on several factors. The tool life
can be optimized by the:
• use of correct geometry and cutting data for the operation
Materials

• use of coolant
• correct set-up for the operation
• reduction in feed at centre when parting off.
I
Information/

B 11
Index

TH_B01-B37.indd 11 2009-11-24 08:31:24

 A External parting and grooving − application overview

External parting and grooving

General turning

Application overview
B
Parting and grooving

Face grooving
Choice of tools B 25

C How to apply B 28

Profiling
Threading

Choice of tools B 29

D How to apply B 31
Milling

E
Drilling

F
Boring

Turning
G
Choice of tools B 32
Tool holding/

How to apply B 34
Machines

H
Parting off Undercutting

Choice of tools B 14 Choice of tools B 36

Materials

How to apply B 17

I
Information/

B 12
Index

TH_B01-B37.indd 12 2009-11-24 08:31:32

 External parting and grooving − application overview A

General turning
B
Circlip grooving

Parting and grooving

Choice of tools B 23

Threading
General grooving
D
Choice of tools B 19

How to apply B 21

Milling
E
Grooving with milling cutters
Choice of tools D 84

Drilling
How to apply D 88, 92
F

Boring
G
Tool holding/
Machines

H
Materials

Parting and grooving

Trouble shooting B 47
I
Information/

B 13
Index

TH_B01-B37.indd 13 2009-11-24 08:31:39

 A Parting off − choice of tools

Parting off
General turning

When parting off a component, a bar or a tube, it’s important

B to save material and minimize the cutting force.
Parting and grooving

Therefore, the insert should be as narrow as possible and

have a geometry that makes the chip narrower than the
groove. This results in a parting off operation with good chip
control and surface finish.

C
Threading

D Choice of tools
Milling

E
Drilling

F
Boring

G
Tool holding/

Namnlöst-1 1 2009-08-31 09:29:34

CoroCut 1- and 2-edge solutions should be considered as the first choice for diffe­rent parting opera-
Machines

tions. All inserts are designed to produce chips that are narrower than the groove and to give excellent
stability.
Second choice is Q-Cut 151.2, which has a variety of geometries that are dedicated for different
H applications and feed areas.
Materials

I
Information/

B 14
Index

TH_B01-B37.indd 14 2009-11-24 08:31:41

 Parting off − choice of tools A

General turning
CoroCut® 1-edge CoroCut® 2-edges Q-Cut® 151.2 CoroCut® 3 CoroCut® XS B

Parting and grooving

Max. diameter, mm
Shallow parting ≤ 12
• •
Medium parting ≤ 40
•
Deep parting ≤ 110 • •
First choice for medium feed P -CM / GC2135 -CM / GC2135 -5E / GC2135 -CM / GC1125 -MACR / GC1025 C
M -CM / GC2135 -CM / GC2135 -5E / GC2135 -CM / GC1125 -MACR / GC1025
K -CM / GC4225 -CM / GC4225 -5E / GC4225 -CM / GC1125 -MACR / GC1025
N -CM / GC1125 -CM / GC1125 -5E / GC1125 -CM / GC1125 -MACR / GC1025

Threading
S -CM / GC1105 -CM / GC1105 -5E / GC1125 -CM / GC1125 -MACR / GC1025

CoroCut and Q-Cut inserts geometries in relation to cutting depth.

D

Shallow parting
Deep parting
For shallow parting, use the 3 edge CoroCut 3 in CM geometry ø ≤ 110 mm

Milling
for economic parting in mass production.
The insert is available with front angle for pip and burr-free Medium parting
ø ≤ 40 mm
parting, and in small widths. E
Shallow parting
ø ≤ 12 mm
Medium parting
For medium parting, use a screw clamp holder with

Drilling
CoroCut 2-edge insert in CM geometry.

Deep parting F
For deep parting, a spring clamp holder and the Q-Cut 151.2
in 5E geometry is the first choice, and CoroCut 1-edge in
CM geometry the second choice.

Boring
Pip and burr-free parting
G
For pip and burr-free parting, use CoroCut 2-edge in CS geo­
metry. The insert is ideal for minimizing pips and burrs due to
the sharp cutting edge and front angles of 10º and 15º.
Tool holding/
Machines

Small part machining

For small part machining, use CoroCut XS. The insert offers
small widths and is ideal for small cutting depths and low H
feeds.
Materials

I
Information/

B 15
Index

TH_B01-B37.indd 15 2009-11-24 08:31:42

 A
General turning Parting off − choice of tools

Insert geometry recommendation

CoroCut® 1- and 2-edges Q-Cut® 151.2

B
-CF Low feed and good chip control. -7E Low feed and very good chip control.
Parting and grooving

Good surface finish due to the wiper design. Good surface finish due to the wiper design.
Available as CoroCut 2-edge insert.

-5E
-CM First choice for different parting operations. First choice for parting tubes.
Medium feed and low cutting forces. Medium feed generates low cutting forces.
Available as CoroCut 1- and 2-edge insert.
C
-4E High feed for deep parting bars.
Strong cutting edges for steel and cast iron.
-CR High feed for deep parting machining.
Strong cutting edges for steel and cast iron.
Threading

Available as CoroCut 1- and 2-edge insert.

-5F Low feed and sharp cutting edge for pip
and burr- free parting.
D -CS Low feed and sharp cutting edge for pip
Front angles of 0º, 5º, 8º, 12º, 15º and 20º.

and burr- free parting.

Front angles of 10º and 15º. -9E
Available as CoroCut 2-edge insert. Optimized for ball bearing operations and
long chipping materials.
Good chip control and high productivity.
Milling

E CoroCut® 3 CoroCut® XS

-CM First choice for shallow parting in most materials. MACR Parting off in small part machining.
Chip breaking geometry for normal cutting Available inserts are neutral with geometry (N),
conditions. neutral without geo­metry (T), left-handed with
geometry (L) and right-handed with geometry (R).
Drilling

F -CS Extra sharp cutting edge with open chip former.

To be used at very low cutting data and on low
carbon materials.
Available with front angle 5º, 10º and 15º for pip
and burr-free parting.
Boring

G
Tool holding/
Machines

H
Materials

I
Information/

B 16
Index

TH_B01-B37.indd 16 2009-11-24 08:31:42

 Parting off − How to apply A

How to apply

General turning
General parting off bars

Use an insert as narrow as possible. This saves material, B

minimizes the cutting force and reduces environmental

Parting and grooving

pollution.
Avoid cutting to centre if possible.
Optimize cutting tool life by reducing feed by up to 75%
about 2 mm before the component centre.
Stop the parting operation approximately 1 mm before
reaching the component centre and the cut-off part will C
drop due to its weight and length. Leave the pip to be
faced off with a conventional tool.
A sub spindle could be used to pull the component

Threading
away before the insert reaches the centre.

Parting into a drilled hole

Milling
Be sure to drill deep enough so as not affect the blade force.
The forces on one corner of the insert may result in insert
chipping and inconsistent tool life. E

Drilling
Parting small diameter bars F
Make sure the lowest possible forces are generated. Use a
CoroCut insert with the smallest possible width and sharpest
edges, such as CS or CF geometries.

Boring
G
Tool holding/
Machines

Pip free parting

Use a right- or left-hand style ground inserts with front angle to
avoid or minimize pips.
Several front angles are available – 5º in CF, CM and CR
H
geo­metries, 10º and 15º in CS geometry.
Note: A large front angle reduces pips, but may not produce a
straight cut and can result in poorer surface finish and shorter
Materials

tool life. Use as small a front angle as possible. Namnlöst-1 1

Namnlöst-1 1
2009-08-31

I
Information/

B 17
Index

TH_B01-B37.indd 17 2009-11-24 08:31:43

 A
General turning Parting off − How to apply

General parting of tubes

Use an insert as narrow as possible to save material,
minimize cutting force and environmental pollution.

B
Parting and grooving

C
Parting thin walled tubes
Make sure the lowest possible forces are generated.
Use inserts with the smallest possible width and sharpest
Threading

edges, such as CS or CF geometries.

CoroCut XS in widths down to 0.7 mm generates the lowest
cutting forces.
D
Milling

Burr free parting

Use a right- or left-hand style ground inserts with front angle
to avoid or minimize burrs.
Drilling

Several front angles are available – 5º in CF, CM and CR

geo­metries, 10º and 15º in CS geometry.
F
Note: A large front angle reduces burrs, but may not produce a
straight cut and can result in poorer surface finish and shorter
tool life. Use as small a front angle as possible.
Burrs can be reduced on the inside by using the CoroTurn XS
insert, dedicated for pre-parting and chamfering.
Boring

G
Tool holding/
Machines

H
Materials

I
Information/

B 18
Index

TH_B01-B37.indd 18 2009-11-24 08:31:44

 General grooving − choice of tools A

General grooving

General turning
Single cut grooving is the most economical and productive
method to produce grooves. However, if the depth of the
B
groove is larger than the width, multiple grooving is the best

Parting and grooving

method for rough grooving.

Threading
Choice of tools D

Milling
E

Drilling
F

Boring
G

First choice for different grooving operations is the CoroCut 2-edge solution.
Tool holding/

Use the GF geometry for low feed and GM geometry for higher feeds.
Machines

These inserts offer outstanding chip control and good surface finishing.

H
Precision grooving
For precision grooving, use the CoroCut 2-edge in GF geometry.
These inserts produce low cutting forces and good surface finishing due to a sharp edge.
Materials

I
Information/

B 19
Index

TH_B01-B37.indd 19 2009-11-24 08:31:46

 A
General turning General grooving − choice of tools

CoroCut® 2-edges CoroCut® 3 CoroCut® XS

Insert width, mm
B 0.5 - 2.0
•
0.5 - 3.0
•
Parting and grooving

1.5 - 15 • •
First choice for medium feed P -GM / GC4225 -GS / GC1125 -MAGR / GC1025
M -GM / GC1125 -GS / GC1125 -MAGR / GC1025
K -GM / GC3115 -GS / GC1125
N -GM / H13A -GS / GC1125 -MAGR / GC1025
C S -GF / GC1125 -GS / GC1125 -MAGR / GC1025

The table above shows the CoroCut inserts geometries and grades in relation to the insert width.
Threading

Long-chipping materials Small part machining

For good chip control, use CoroCut 2-edge in GM geometry. For small part machining, use CoroCut XS. The insert offers
D The geometry has outstanding chip control, which reduces
small widths and is ideal for small cutting depths and low
feeds.
chip width resulting in good surface finish.
Milling

Hard part machining

E For hard part machining, use the CoroCut 2-edge in GE geometry.
The insert maintains close tolerances and produces an excellent finish
on hardened materials.
Drilling

F Use CoroCut for hard part machining

Insert geometry recommendation

Boring

CoroCut® 1- and 2-edges CoroCut® 3

G -GF Low feed for precision grooving. -GS First choice for small widths in most materials.
Low cutting forces and good surface finish. -RS Chip breaking geometry for normal cutting conditions.
Available as CoroCut 2-edge insert.
Can be ordered as Tailor Made.
Tool holding/
Machines

-GM Medium feed grooving in all materials. -CS Extra sharp cutting edge with open chip former.
Reduces chip width and produces good surfaces. To be used at very low cutting data and on low
Available as CoroCut 2-edge insert. carbon materials.
H

CBN-tipped insert for finish grooving of hardened CoroCut® XS

-GE
materials. Close tolerances produce excellent finish.
Materials

Available as CoroCut 1-edge insert.

-MAGR Grooving in small part machining.
Available inserts are left hand with geometry (L) and
right hand with geometry (R).
I
Information/

B 20
Index

TH_B01-B37.indd 20 2009-11-24 08:31:46

 General grooving − How to apply A

How to apply

General turning
Single cut grooving
Single cut grooving is an economical and productive method to produce grooves. B

Parting and grooving

The GF geometry has a width tolerance of ±0.02 mm and works well with low feeds.
The GM geometry is intended for medium feed.
For extreme high surface quality on the side of the groove, we recommend the
TF geometry. This geometry is designed with wipers on the side, see illustration.

C
TF has wiper design, which produces
extremely high surface quality on the
sides of the groove.

Threading
Ramping
The ramping method is recommended to avoid vibration and minimize radial forces.
This method offers the best swarf control and reduces notch wear in advanced D
materials.
By using a round insert, RO or RM geometry, the feeding can be done faster,
resulting in an even and higher productivity.
Note: Ramping doubles the required number of cuts.

Milling
E

Ramping operation

Drilling
Chamfered corners
When producing high quality grooves, there is often a need for chamfered
corners.
A B F
One way is to use the corners on, for example, a CoroCut GF insert to make
the chamfer, see illustration A.
A better way to make grooves with chamfer in mass production, is to order

Boring
a Tailor Made insert with the exact chamfer form, see illustration B.
For more information about Tailor Made, see Extended offer, page B 67.
G
Tool holding/
Machines

Flat bottom H
A minimum deviation of flatness is sometimes desirable when producing radial
grooves. The CoroCut 1- and 2-edge GF, GM, CR and TM geometries are designed
to generate a completely flat bottom.
Materials

Use CoroCut GF, GM, CM and TM for flat

bottoms.
I
Information/

B 21
Index

TH_B01-B37.indd 21 2009-11-24 08:31:46

 A
General turning General grooving − How to apply

Multiple grooving
Multiple grooving is the best method for rough grooving when
the depth is larger than the width.
Use the insert width to produce full grooves and then remove
B the rings. This protects the corner radius and directs the swarf
into the middle of the chip breaker.
Parting and grooving

Choose ring with 0.6-0.8 x width of the insert.

Multiple grooving operations

C

Plunge turning
Threading

TF and TM geometries should be used for plunge turning and

ramping operations, because the inserts are made for radial
and axial feeds.
D Axial turning depth should not exceed 0.75 x width of the
insert, la.
Milling

E Plunge turning operation

Cycle time comparison

Drilling

The illustrations below show comparisons between multiple grooving and plunge turning.

F Multiple grooving
32 sec 70 sec 50 sec Insert width 6 mm

16 36 46
Boring

9 Direction of feed
Feed 0.2 mm/r
24 21
G
Tool holding/

Plunge turning
Machines

37 sec 68 sec 44 sec

(7 passes) (3 passes)
Insert width 6 mm
36
H 16 46 Depth of cut 3 mm

9 Direction of feed
Feed 0.2 mm/r
24 21
Materials

Direction of feed
Feed – axial – 0.3 mm/r

I
Information/

B 22
Index

TH_B01-B37.indd 22 2009-11-24 08:31:47

 Circlip grooving − choice of tools A

Circlip grooving

General turning
Circlips on shaft and axle components are common for
several mechanical applications. Different circlip widths
B
are described in an ISO standard that decides the choice

Parting and grooving

of insert width.

Threading
Choice of tools D

Circlip width (la), Circlip groove Circlip groove, T-Max U-Lock® 154.0 CoroCut®3 CoroCut® 2-edges
mm H13-tolerance, mm

Milling
mm

0.5 -0 / +0.14 0.5 – 0.64 • E

0.7 -0 / +0.14 0.7 – 0.84 •
0.8 -0 / +0.14 0.8 – 0.94 •
0.9 -0 / +0.14 0.9 – 1.04 •
• •

Drilling
1.1 -0 / +0.14 1.1 – 1.24
1.3 -0 / +0.14 1.3 – 1.44 • •
1.6 -0 / +0.14 1.6 – 1.74 • • F
1.85 -0 / +0.14 1.85 – 1.99 • • •
2.15 -0 / +0.14 2.15 – 2.29 • • •
2.65 -0 / +0.14 2.65 – 2.79 • • •
3.15 -0 / +0.18 3.15 – 3.33 • • •

Boring
4.15 -0 / +0.18 4.15 – 4.33 • •
5.15 -0 / +0.18 5.15 – 5.33 •
First choice P GC1020 -GS / GC1125 -GF / GC1125
G
M GC1020 -GS / GC1125 -GF / GC1125
K GC1020 -GS / GC1125 -GF / GC1125
Tool holding/

N GC1020 -GS / GC1125 -GF / GC1125

Machines

S GC1020 -GS / GC1125 -GF / GC1125

H GC1020 -GS / GC1125

For best cost efficiency, use the three edged U-Lock 154.0 system. H
The insert has sharp edges which produce high quality grooves.
The second choice is CoroCut 2-edge with GF geometry.
The insert offers low cutting forces and good surface finish due to sharp cutting edges.
Materials

I
Information/

B 23
Index

TH_B01-B37.indd 23 2009-11-24 08:31:47

 A
General turning Circlip grooving − choice of tools

Small circlip grooves

For small circlip grooves, use the three-edged CoroCut 3 with GS geometry. The insert produces
circlip grooves down to 0.50 mm.

B
Parting and grooving

Milling circlip grooves

For milling circlip grooves, the CoroMill 327 is the first choice for internal small holes, and the
CoroMill 328 the first choice for external or large holes.
For more information about CoroMill 327 and CoroMill 328, see Milling, Chapter D.

Tool holder recommendation

Threading

The U-Lock 154.0 insert must be used with the U-Lock tool
holder. The correct shim has to be used to produce a 0º
inclination angle. CoroCut 3 holder

D The U-Lock 154.0 insert could also be used with the

Coromant Capto system.
The CoroCut 3 tool holder is available as right- and left-hand
styles. Choose insert seat size to match holder and insert.
Coromant Capto and SL cutting head can also be used.
Milling

For more information, see Tool holding/machines, Chapter G.

E
Drilling

Key torx plus - screwdriver

Insert geometry recommendation

Boring

T-Max U-Lock® 154.0 CoroCut® 3

G
T-Max U-Lock insert is available in one geometry for -GS First choice for small circlip grooves in most
right- or left-hand inserts. materials.
Chip breaking geometry for normal cutting conditions.
The right-hand insert can be used with right-hand
Tool holding/

external and left-hand internal holders.

Machines

The left-hand insert can be used with left-hand

external and right-hand internal holders.

H
CoroCut® 2-edge

-GF Large diameter circlip grooves.

Materials

Low cutting forces and good surface finish.

Available as CoroCut 2-edge insert.
Can be ordered as Tailor Made.

I
Information/

B 24
Index

TH_B01-B37.indd 24 2009-11-24 08:31:49

 Face grooving − choice of tools A

Face grooving

General turning
To produce an axial groove in a component, it is important to
choose correct tool holder for the insert. The tool holder must
B
be adapted to the bending radius of the groove and should

Parting and grooving

therefore be curved.

Threading
Choice of tools D

CoroTurn® XS CoroCut® MB Q-Cut® 151.3 CoroCut® 2-edge

Milling
E
ø 6.2 ø 12 ø 24 ø 34

Drilling
First cut diameter, F
mm

6.2-18 12-30 24-500 34-500

The illustration above shows the CoroCut, the CoroTurn and the Q-Cut insert geometries in relation to recommended face grooving diameters.

Boring
G
First choice is the CoroCut 2-edged solution. Use TF geometry The RM geometry has outstanding chip control and good
for low feed, GM geometry for medium feed and RM geometry surface finish.
for radial bottom face grooving.
Second choice is Q-Cut 151.3 in 7G geometry for medium
Tool holding/

The TF and GM geometries have positive geometries that feed. The insert generates low cutting forces with little
Machines

eliminate the risk of built-up edges. The TF geometry has good vibration.
chip control and surface finish due to the Wiper design.

H
Materials

I
Information/

B 25
Index

TH_B01-B37.indd 25 2009-11-24 08:31:51

 A
General turning Face grooving − choice of tools

CoroTurn® XS CoroCut® MB Q-Cut® 151.3 CoroCut® 2-edge

First cut diameter, mm

B 6.2 - 18 •
12 - 30 •
Parting and grooving

24 - 500 •
34 - 500 •
First choice for medium feed P GC1025 GC1025 -7G / GC1125 -TF / GC1125
M GC1025 GC1025 -7G / GC2135 -TF / GC2135
K -7G / GC3020 -TF / GC4225
C N GC1025 GC1025 -TF / H13A
S GC1025 GC1025 -7G / GC1125 -TF / H13A

The table above shows CoroCut, CoroTurn and Q-Cut insert geometries and grades in relation to recommended
face grooving diameters.
Threading

D Medium diameters – 24 to 500 mm Small diameters – 6.2 to 30 mm

For medium diameters, use the Q-Cut 151.3 with 7G or 7P For small diameters, use the CoroTurn XS or the CoroCut MB
geometry. First choice is the 7G geometry with Wiper design system. Both inserts have sharp cutting edges for good results
for surface finish. Both geometries offer good chip control. at low feeds.
CoroTurn XS is intended for precision machining in diameters
Milling

from 6.2 to 18 mm.

CoroCut MB is intended for diameters from 12 to 30 mm.
E
Drilling

Tool holder recommendation

F
Use CoroCut solid tool holders especially designed for face CoroCut SL face grooving blades can also be used together
grooving. Type RF/LF (0° insert angle) or RG/LG (90° insert with Coromant Capto and shank tool adaptors, making it
angle) cover the first cut from 34 to 400 mm diameter and possible to build several different combinations.
offer the best stability.
For more information, see CoroCut SL, page B 58.
For grooving depths up to 4.5 mm, an angled shank holder is
Boring

available. The holder is available in 7°, 45° and 70°, right-

and left-hand style versions.
G
Tool holding/
Machines

H
Materials

I RF/LF holder RG/LG holder 70º angled holder CoroCut SL

Information/

B 26
Index

TH_B01-B37.indd 26 2009-11-24 08:31:52

 Face grooving − choice of tools A

General turning
Choose the correct tool (A or B sweep, right- or left-hand style) depending on your machine set-up and workpiece rotation.
See the following illustration.

Parting and grooving

C

R = right-hand holder

Threading
L = left-hand holder
A = A-curved
B = B-curved
D

Milling
Insert geometry recommendation
E
CoroCut® 2-edges CoroTurn® XS

-TF First choice for all turning operations in stainless steel. CXS-..F Face grooving insert, right-hand style.
Low feed and good chip control.

Drilling
Surface finish due to the wiper design.
Available as CoroCut 1- and 2-edge insert.

F
-GM Medium feed grooving in all materials.
Reduces chip width and good surfaces. CoroCut® MB
Available as CoroCut 2-edge insert.

MB-09FA Face grooving insert with A-curve.

Boring
-RM Medium feed and good surface finish.
Available as CoroCut 1- and 2-edge insert. G
MB-09FB Face grooving insert with B-curve.
Tool holding/
Machines

Q-Cut® 151.3

-7G First choice for face grooving. H

Medium feed.
Good surface finish due to the Wiper design.
Materials

-7P Medium feed for good chip control in both axial

and radial directions.
Good surface finish.
I
Information/

B 27
Index

TH_B01-B37.indd 27 2009-11-24 08:31:53

 A Face grooving − How to apply

How to apply
General turning

Roughing
B When roughing, the first cut (1) always starts on the largest
diameter and works inwards. The first cut offers chip control
Parting and grooving

but less chip breaking.

Cuts two (2) and three (3) should be 0.5-0.8 x width of the
insert. Chip breaking will now be acceptable and the feed
can be increased slightly.

C
Threading

D Finishing
When finishing, machine the first cut (1) within the given
diameter range.
Cut two (2) finishes the diameter. Always start outside and
turn inwards.
Milling

Finally, cut three (3) finishes the inner diameter to the correct
dimensions.
E
Drilling

F
Boring

Correct tool for diameter range

G Make sure that the correct tool is chosen for the diameter
range.
1. If the insert support rubs the inside diameter of the
workpiece, the diameter range could be wrong or the
Tool holding/

tool may not be parallel to axis.

Machines

2. If the insert support rubs the outside diameter of the

workpiece, the diameter range could be wrong or the
tool may not be parallel to axis.
H
Materials

I
Information/

B 28
Index

TH_B01-B37.indd 28 2009-11-24 08:31:53

 Profiling − choice of tools A

Profiling

General turning
When machining components with complex shapes,
CoroCut inserts offer great opportunities for achieving greater
B
effici­ency. Since one single tool can be used instead of right-

Parting and grooving

and left-hand conventional tools, the tool range is minimized.
This results in fewer tool changes and more room in the turret.
Using profiling inserts is often a good way to remove a lot of
material in a short time.

Threading
Choice of tools D

Milling
E

Drilling
F

Boring
G
The stability of the CoroCut 2-edge system offers strong possibilities for
using high cutting data. The round inserts have several dedicated geometries.
Tool holding/

Use RM geometry for medium feed and tougher conditions, and precision
Machines

RO geometry for stainless steel and other sticky materials.

H
Materials

I
Information/

B 29
Index

TH_B01-B37.indd 29 2009-11-24 08:31:58

 A
General turning Profiling − choice of tools

CoroCut® 2-edges

B
First choice for medium feed P -RM / GC4225
Parting and grooving

M -RM / GC1125
K -RM / GC4225
N -AM / GC1005
S -RO / S05F
H -RE / CB7015
C The table above shows the CoroCut 2-edge insert geometry and grades.
Threading

Non-ferrous materials
First choice for machining non-ferrous materials is the
D CoroCut 2-edge insert in AM geometry. The insert offers
good chip flow and good surface finish.

Hardened steel
Milling

Use the CoroCut 1-edge insert the CBN-tipped RE geometry

for machining hardened steel. The insert offers outstanding
productivity and good surface finishing.
E
Drilling

Insert geometry recommendation

Boring

CoroCut® 1- and 2-edge

G -RM First choice for profiling geometry.

Medium feed and good surface finish.
-RS Diamond tipped insert for finish profiling of
non-ferrous materials.
Available as CoroCut 1- and 2-edge insert. Good productivity and surface finish.
Available as CoroCut 1-edge insert.
Tool holding/
Machines

Namnlöst-1 1

-RO Optimized insert for profiling stainless steel, -RE CBN-tipped insert for profiling hardened materials.
HRSA and sticky materials. Outstanding productivity and surface finish.
Good chip control at low feeds and small depths. Available as CoroCut 1-edge insert.
H Available as CoroCut 2-edge insert.

-AM First choice for profiling non-ferrous materials.

Good chip flow and surface finish.
Materials

Available as CoroCut 2-edge insert.

I
Information/

B 30
Index

TH_B01-B37.indd 30 2009-11-24 08:31:59

 Profiling − How to apply A

How to apply

General turning
Wrap around
Wrap around occurs with round inserts, when they are used To reduce this problem, the insert diameter should be as small B
for plunging or profiling into corners. The large insert diameter as possible compared to the radius that is generated.

Parting and grooving

creates high cutting pressures and the feed needs to be
Use dwelling (micro stops) to form short chips and to avoid
reduced.
vibrations if the same insert radius must be used.
However, if the feed is reduced too much vibration may occur.

Insert radius ≥ component radius Insert radius < component radius

Threading
Not recommended Recommended

Milling
E
fn1 = parallel cuts – max. chip thickness 0.15–0.40 mm
fn2 = radius plunging – 50% max. chip thickness

Drilling
F

Boring
G

Profiling/pocketing – trochoidal turning on HRSA materials

Tool holding/

• Roll into cut with reduced feed.

Machines

• Increase feed to max fn for linear cuts.

reduced fn max reduced fn max
• Roll out of cut with reduced feed.
For more information, see HRSA application guide. fn max
H
Materials

I
Information/

B 31
Index

TH_B01-B37.indd 31 2009-11-24 08:31:59

 A Turning − choice of tools

Turning
General turning

The most common methods for producing wide grooves or

B for turning between shoulders are multiple grooving, plunge
turning or ramping. All three methods are roughing operations
Parting and grooving

and must be followed by a separate finishing operation.

Use this rule of thumb: if the width of the groove is smaller
than the depth, then use the multiple grooving method; if the
reverse is true, then use plunge turning. However, for slender
components, the ramping method may be used.
C
Threading

D Choice of tools
Milling

E
Drilling

F
Boring

G
First choice for different turning operations is CoroCut 2-edge.
Use TF geometry for low feed and TM geometry for higher feeds.
Tool holding/

The inserts have a positive geometry that eliminates the risk of built-up edges.
Machines

H Namnlöst-1 1
Materials

I
Information/

B 32
Index

TH_B01-B37.indd 32 2009-11-24 08:32:01

 Turning − choice of tools A

General turning
CoroCut® 2-edge B

Parting and grooving

First choice P -TF / GC1125
M -TF / GC2135
K -TF / GC4225 C
N -TF / H13A
S -TF / GC1105

CoroCut 2-edge insert geometry and grades.

Threading
Plunge turning D
For plunge turning, use the CoroCut 2-edge with TF-geometry.
The insert offers good chip control and surface finish due to the Wiper design.

Milling
Tool holder recommendation Tool seat Possible insert seat E
CoroCut is based on a Rail- or V-shaped design for D
D
exceptional stability. E, F, G
E
Note: Holder seat size must correspond with insert seat size. F F, G
G G

Drilling
H H, J, K
J J, K
K K CoroCut
L K Rail tip-seat F
M M
R R

Note: If a wider insert is used in a smaller insert seat, make sure to

Boring
reduce feed and/or ap.

G
Insert geometry recommendation
Tool holding/

CoroCut® 1- and 2-edge

Machines

-TF First choice for all turning operations on -TM Medium feed for general turning operations.
stainless steel. Available as CoroCut 2-edge insert.
Low feed and good chip control.
Surface finish due to the wiper design. H
Available as CoroCut 1- and 2-edge inserts.
Materials

I
Information/

B 33
Index

TH_B01-B37.indd 33 2009-11-24 08:32:02

 A Turning − How to apply

How to apply
General turning

Axial turning - surface finish

B It is possible to generate a high quality surface finish with the
wiper effect of CoroCut inserts.
Parting and grooving

The best wiper effect is achieved when you find the right
combination of feed ap and blade deflection. An Ra value below
0.5 will be generated with a high bearing ratio.

C
A B Surface finish comparison
Surface finish,
Ra µm
Threading

4.0
3.5 TNMG 160404 (B)

3.0 TNMG 160408 (B)

D CoroCut – 5 mm RM
Comparison between CoroCut (A) and conventional 2.5
turning tools (B). For comparison of surface finish CoroCut – 4 mm TF
2.0
achieved, see graph.
1.5 CoroCut – 6 mm TM

1.0
Milling

0.5
Feed, mm/r
E 0.1 0.15 0.2 0.25 0.3

Plunge turning
Drilling

TF and TM geometries should be used for plunge turning and

ramping operations, because the inserts are made for both
radial and axial feeds.
F
Axial turning depth should not exceed 0.75 x width of the
insert, la.
Boring

Plunge turning operation

G
Tool holding/
Machines

Ramping
Ramping is recommended to avoid vibration and minimize
radial forces. This method also offers the best swarf control
H and reduces notch wear in advanced materials.
By using a round insert such as the RO or RM geometry, the
feeding can be done faster resulting in even wear and higher
productivity.
Materials

Note: Ramping doubles the required number of cuts.

I Ramping operation
Information/

B 34
Index

TH_B01-B37.indd 34 2009-11-24 08:32:02

 Turning − How to apply A

General turning
Roughing - generate flat bottom
The following machining sequence is recommended to B
generate a flat bottom and a high quality finish on the

Parting and grooving

sides of the groove.
The cycle is continued until the required depth is achieved.
A finishing cut is required to achieve good surface finish.

1. Radially
 infeed to required depth + 0.2 mm
(max 0.75 x insert width).
C
2. Retract radially 0.2 mm.
3. Turn axially to opposite shoulder position.

Threading
4. Retract radially 0.5 mm.

Finishing of grooves
Be careful when machining around the bottom radius of the

Milling
groove. As the insert contours around the radius, most of the
movement is in the Z direction.
This produces an extremely thin chip along the front cutting E
edge and can result in rubbing and hence vibration. To prevent
this, the axial and radial cutting depth should be 0.5–1.0 mm;
see below.

Drilling
F
Z

Boring
G
Tool holding/
Machines

H
Materials

I
Information/

B 35
Index

TH_B01-B37.indd 35 2009-11-24 08:32:02

 A Undercutting − choice of tools

Undercutting
General turning

A grinding or threading operation is required on many compo-

B nents. Clearance is needed to grind or thread into a shoulder;
therefore, we recommend the use of round inserts for this type
Parting and grooving

of undercutting operation.

C
Threading

D Choice of tools

CoroCut® 2-edges Q-Cut® 151.2

Milling

Diameter
E Small depth • •
Large depth •
Small diameter •
First choice for medium feed P -RM / GC4225 -4U / GC235
Drilling

M -RM / GC1125 -4U / GC235

K -RM / GC4225 -4U / H13A
N -RM / H13A -4U / H13A
F
S -RO / S05F -4U / H13A

The table shows CoroCut and Q-Cut insert geometries and grades.
Boring

G
Tool holding/
Machines

H
Materials

I
Information/

B 36
Index

TH_B01-B37.indd 36 2009-11-24 08:32:06

 Undercutting − choice of tools A

General turning
Large depths B
For larger clearance depths, the Q-Cut 151.2 with 4U geometry

Parting and grooving

is the best choice. The insert has a large clearance angle that
permits undercutting of smaller diameters.

Small depths
For small clearance depths, use CoroCut 1- or 2-edge inserts C
with RO or RM geometries.
The RO geometry is excellent for operations on stainless steel,
HRSA and other sticky materials.

Threading
Both geometries have outstanding chip control at low feeds
and small depths of cuts.
Q-Cut 151.2 for larger clearence Ø ≥ 23 mm

Milling
Tool holder recommendation E
Use CoroCut tool holders type RX/LX with insert angle 7°, For external machining with Q-Cut, use the Coromant Capto
45° or 70°. with tool holders type RS/LS151.22.

Drilling
F

Boring
RX/LX holder RS/LS151.22 holder
G
Tool holding/

Insert geometry recommendation

Machines

CoroCut® 2-edge Q-Cut® 151.2

-RM First choice. Medium feed and good surface finish. -4U First choice for larger clearance depths. H
Available as CoroCut 1- and 2-edge inserts. Also diameters down to 23 mm.
Materials

Optimized insert for stainless steel, HRSA and

-RO
sticky materials.
Good chip control at low feeds and small depths.
Available as CoroCut 2-edge insert.
I
Information/

B 37
Index

TH_B01-B37.indd 37 2009-11-24 08:32:06

 A Internal parting and grooving − application overview

Internal grooving
General turning

Application overview
B
Parting and grooving

C
Internal grooving
Threading

Choice of tools B 40

How to apply B 46
D
Milling

E
Drilling

F
Boring

G
Tool holding/
Machines

H
Materials

I
Information/

B 38
Index

TH_B38-B71.indd 38 2009-11-24 08:53:59

 Internal parting and grooving − application overview A

General turning
B

Parting and grooving

C

Threading
D

Milling
Grooving with milling cutters
E
Choice of tools D 84

How to apply D 88, 92

Drilling
F

Boring
G
Tool holding/
Machines

H
Materials

Parting and grooving

Trouble shooting B 47
I
Information/

B 39
Index

TH_B38-B71.indd 39 2009-11-24 08:54:01

 A Internal grooving − choice of tools

Internal grooving
General turning

Many components have an internal groove; most internal

B grooves are close to the entrance to the hole, such as circlip
grooves.
Parting and grooving

The most common method for producing internal grooves is

through radial grooving, however multiple grooving and plunge
turning can also be used. For more information, see the
chapter on Grooving, page B 19, and the chapter on Turning,
page B 32.
C The illustration below shows the CoroTurn XS, the CoroCut MB,
the Q-Cut 151.3 and the CoroCut 2-edge inserts in relation to
recommended internal grooving diameters.
Threading

D Choice of tools

CoroTurn® XS CoroCut® MB Q-Cut® 151.3 CoroCut® 2-edge

Milling

E ≥12 mm
≥25 mm
≥4.2 mm ≥10 mm
Drilling

F
Min hole
diameter, mm
4.2 10 12 25

Recommended tools for different internal grooving diameters.

Boring

CoroTurn® XS CoroCut® MB Q-Cut® 151.3 CoroCut® 2-edge

Tool holding/
Machines

H Hole dia ≥ 4.2 mm Hole dia ≥ 10 mm Hole dia ≥ 12 mm Hole dia ≥ 25 mm

Grooving • • • •
Face grooving • • • •
Profiling • • • •
Materials

Turning •
Machining methods with different inserts.
I
Information/

B 40
Index

TH_B38-B71.indd 40 2009-11-24 08:54:02

 Internal grooving − choice of tools A

General turning
Hole diameters over 4.2 mm – CoroTurn® XS
Use CoroTurn XS for grooving, face grooving, profiling and pre-parting

B
Grooving Face grooving Profiling Pre-parting

Parting and grooving

Low feed CXS-04G CXS-06F CXS-04R CXS-05GX
CXS-05G CXS-05R
CXS-06G CXS-06R C
CXS-07G CXS-07R

Threading
First choice for P GC1025
recommended feed
M GC1025
K
D
N GC1025
S GC1025

CoroTurn XS insert geometries and grades in relation to recommended machining method

Milling
E
Insert geometry recommendations
Insert size mm Type of operation

Drilling
G = Grooving
F = Face grooving
R = Profiling full radius insert F
04 = 4 mm GX = Pre-parting insert
05 = 5 mm
06 = 6 mm
07 = 7 mm

Boring
G
Grooving Face grooving
Inserts are available in widths from 0.78 to 2.0 mm for general Face grooving inserts are available for hole diameters from
Tool holding/

grooving and circlip grooving, and in different lengths for maxi- 6.2 mm and insert widths from 1 to 3 mm. The maximum
Machines

mum stability. cutting depth for these inserts is 6 mm.

Profiling Pre-parting H
Round insert styles for internal profiling and grooving are Inserts are available for producing a 45° chamfer inside the
available from widths 1 to 2 mm. bore before parting off the component.
Materials

I
Information/

B 41
Index

TH_B38-B71.indd 41 2009-11-24 08:54:02

 A
General turning Internal grooving − choice of tools

Hole diameters over 10 mm – CoroCut® MB

Use CoroCut MB for grooving, face grooving, profiling and pre-parting

B Grooving Face grooving Profiling Pre-parting

Parting and grooving

Low feed MB-07G MB-09FA MB-07R MB-07GX

MB-09G MB-09FB MB-09R
C
Threading

First choice for P GC1025

recommended feed
M GC1025

D K
N GC1025
S GC1025
CoroCut MB insert geometries and grades in relation to recommended machining method
Milling

E Insert geometry recommendations

Insert size mm Type of operation

G = Grooving
Drilling

FA = Face grooving A-curve

FB = Face grooving B-curve
F R = Profiling full radius insert

07 = 7 mm, min hole Ø 10 mm GX = Pre-parting insert

09 = 9 mm, min hole Ø 14 mm

Boring

G
Grooving Face grooving
Tool holding/

Inserts are available in widths from 1 to 3 mm for general Inserts are available for groove diameters from 14 mm and
Machines

grooving and in widths from 0.73 to 1.7 mm for circlip widths from 1 to 3 mm. The maximum cutting depth for these
grooving. inserts is 5 mm.

H
Profiling Pre-parting
Round insert styles for internal profiling and grooving are Inserts are available for producing a 45° chamfer inside the
available in widths from 0.8 to 3 mm. bore before parting off the component.
Materials

I
Information/

B 42
Index

TH_B38-B71.indd 42 2009-11-24 08:54:02

 Internal grooving − choice of tools A

General turning
Hole diameters larger than 12 mm – Q-Cut® 151.3
Use Q-Cut 151.3 for grooving, face grooving and profiling

Precision grooving Face grooving Profiling

B

Parting and grooving

Low feed -4G -7P
C

Medium feed -7G

Threading
D
First choice for P -4G / GC1125 -7G / GC1125 -7P / GC1125
recommended feed
M -4G / GC1125 -7G / GC2135 -7P / GC1125
K -4G / H13A -7G / GC3020 -7P / GC4225
N -4G / H13A

Milling
S -4G / H13A -7G / GC1125 -7P / GC1125

Q-Cut 151.3 insert geometries and grades in relation to recommended machining method E

Drilling
Grooving
Use the 4G geometry for low feed precision grooving. This insert offers low cutting forces F
and good chip control.

Face grooving

Boring
Use the 7G geometry for medium feed face grooving. This insert offers good chip control
and surface finish due to the Wiper design.
G
Profiling
Use the 7P geometry for low feed profiling. This insert offers good chip control in both
Tool holding/

axial and radial directions.

Machines

H
Materials

I
Information/

B 43
Index

TH_B38-B71.indd 43 2009-11-24 08:54:03

 A
General turning Internal grooving − choice of tools

Hole diameters larger than 25 mm – CoroCut® 2-edge

Use CoroCut 2-edge for grooving, face grooving, profiling and turning

B Grooving Face grooving Profiling Turning

Parting and grooving

C
Finishing -GF -GF -TF

Medium -GM -TF -RM -TM

Threading

First choice P -GF / GC1125 -GM / GC4225 -GF / GC1125 -TF / GC1125 -RM / GC4225 -TF / GC1125 -TM / GC4225
M -GF / GC1125 -GM / GC1125 -GF / GC1125 -TF / GC2135 -RM / GC1125 -TF / GC2135 -TM / GC2135
D K -GF / GC1125 -GM / GC3115 -GF / GC1125 -TF / GC4225 -RM / GC4225 -TF / GC4225 -TM / GC4225
N -GF / H13A -GM / H13A -GF / H13A -TF / H13A -RM / H13A -TF / H13A -TM / H13A
S -GF /GC1125 -GF / H13A -TF / GC1105 -RO / S05F -TF / H13A -TM / H13A

CoroCut insert geometries and grades in relation to recommended machining method

Milling

E
Grooving
Use the GF geometry for low-feed grooving and the GM geometry for medium-feed grooving.
The GF insert can be ordered as Tailor Made and both inserts offer good surface finish.
Drilling

F Face grooving
Use the GF geometry for low-feed face grooving and the TF geometry for medium-feed face grooving.
The GF insert can be ordered as Tailor Made, and the TF insert offers good chip control and surface
finish due to the Wiper design.
Boring

Profiling
G Use the RM geometry for medium feeds and tougher conditions. The insert offers good chip control
and surface finish.
Tool holding/

Turning
Machines

Use the TF geometry for low-feed turning and TM geometry for medium-feed turning. The TF insert offers
good chip control and surface finish due to the Wiper design. Both inserts have a positive geometry that
eliminates the risk of built-up edges.
H
Materials

I
Information/

B 44
Index

TH_B38-B71.indd 44 2009-11-24 08:54:03

 Internal grooving − choice of tools A

Tool holder recommendations

General turning
Internal bars for CoroCut® 2-edge
Use the RAG/LAG bars for internal grooving applications. The
bars are available in right and left-hand styles, from 16 to 50 mm
B
diameters, and as 20° angled bars for internal profiling.

Parting and grooving

The bars are prepared for internal coolant.
Bars up to 25 mm diameters are cylindrical and designed to
be used in EasyFix sleeves. Bars above 25 mm diameters have Grooving bar Profiling bar
flat sides.

Threading
Solid carbide and dampened boring bars Carbide reinforced dampened bars D
Stability is the key for avoiding vibration, and it is also related dmm
to tool overhang and where in the hole the groove is machined.
Vibration is avoided by using the largest bar size possible, while
chip jamming calls for the opposite. L < 7 × dmm

Milling
The overhang should not exceed 3 x D for solid steel and 5 x D for
solid carbide boring bars. Dampened and carbide bars
With dampened boring bars, it is possible to cut with overhangs dmm E
up to 5 x D; with a carbide reinforced dampened bar up to 7 x D.
Always remember to use sharp geometry and smart methods to
avoid vibration before you use a dampened bar. L ≤ 5 × dmm

Drilling
Solid steel bar
dmm
F

L ≤ 3 × dmm

Boring
G
Use EasyFix clamping sleeves for accurate machining with lower
vibration and precise height location. For more information, see
Too holding/Machines, Chapter G.
Tool holding/
Machines

H
Materials

Easy Fix

I
Information/

B 45
Index

TH_B38-B71.indd 45 2009-11-24 08:54:04

 A
General turning Internal grooving − choice of tools

Insert geometry recommendations

CoroCut® 1- and 2-edges CoroCut® 151.3

B -GF Low feed for precision grooving. -4G Alternative choice for internal grooving of
Low cutting forces and good surface finish. smallest bores.
Parting and grooving

Available as CoroCut 2-edge insert. Low cutting forces and good chip control in
Can be ordered as Tailor Made. most materials.

-GM Medium feed grooving in all materials. -7G First choice for face grooving.
Reduces chip width and provides good surfaces. Medium feed.
Available as CoroCut 2-edge insert. Good surface finish due to the wiper design.
C
-7P First choice for profiling and face grooving.
-RM First choice geometry for profiling. Medium feed for good chip control in both
Medium feed and good surface finish. axial and radial directions.
Good surface finish.
Threading

Available as CoroCut 1- and 2-edge inserts.

D -TF First choice for all turning operations in

stainless steel.
Low feed and good chip control.
Good surface finish due to the wiper design.
Available as CoroCut 1- and 2-edge inserts.
Milling

-TM Medium feed for general turning operations.

Available as CoroCut 2-edge insert.

How to apply
Drilling

F Avoid vibrations
To avoid vibrations, the set-up should have the shortest overhang with the lightest
cutting geometry. Therefore, use an insert with sharp GF or TF geometry.
Vibrations can also be avoided by using several insertions with a narrower insert.
End up with a finishing operation. See illustration (A) right.
Boring

A groove can also be machined with a single insertion followed by plunge turning.
Start at the bottom and machine from the back to the front of the hole to get the
best chip evacuation. See illustration (B) right.
G
For accurate machining with lower vibration and precise height, use EasyFix
clamping. For more information about the EasyFix, see Main catalogue.
Tool holding/
Machines

Burr free pre-parting

Use CoroTurn XS or CoroCut MB inserts for producing a 45º chamfer inside
before parting off the component.
H
Materials

I
Information/

B 46
Index

TH_B38-B71.indd 46 2009-11-24 08:54:04

 Parting and grooving – trouble shooting A

Trouble shooting

General turning
Parting & Grooving
B

Parting and grooving

Cause Solution
Bad surface • Use a short and stable tool
• Take away the chips - use geometry with good chip control
• Check speed / feed guidelines
• Use wiper geometry
C
• Check tool set-up

Threading
Bad surface on aluminium • Select the sharpest geometry
• Use geometry with good chip control
• Select a special soluble oil for the material D

Bad chip breaking • Change geometry

Milling
• Select a higher feed
• Use dwelling (pecking)
• Increase coolant E

Vibrations • Use a stable set-up

Drilling
• Check speed / feed guidelines
• Use shorter overhang
• Change geometry F
• Check tool condition
• Check tool set-up

Boring
Poor tool life • Check centre height
• Check angle between tool and component G
•C
 heck condition of the blade. If the blade is old, the insert could
be unstable in the tip-seat.
Tool holding/
Machines

H
Materials

I
Information/

B 47
Index

TH_B38-B71.indd 47 2009-11-24 08:54:05

 A Parting and grooving – trouble shooting

Trouble shooting
General turning

Parting & Grooving

B
Parting and grooving

Careful observations
To achieve the best possible economies of tool life, workpiece At low speeds, built-up edge (BUE) and chipping are the main
quality and optimized cutting data, careful observations of the problems; at high speeds, plastic deformation (PD), flank wear
insert edge have to be made. and crater wear are the problems.

Cause Solution
Threading

1. C utting edge temperature too low. 1. Increase cutting speed and/or feed.
2. Unsuitable geometry or grade. 2. Choose a geometry with a sharper edges preferably
a PVD-coated grade.

When parting to centre and on stainless material, it is

D almost impossible to avoid BUE. It is important to mini-
mize this phenomenon by using the solutions above.
Built-up edge (BUE)
Milling

1. Too hard grade. 1.  hoose a softer grade.

C
2. Too weak geometry. 2. Choose a geometry for higher feed area.
3. Unstable conditions. 3. Reduce overhang. Check centre height.
4. Too high cutting data. 4. Reduce cutting data.
E
Chipping/breakage
Drilling

1. Excessive temperature in cutting zone. 1. R educe cutting speed and/or feed.

2. Unsuitable grade. 2. Choose more wear resistant grade.
3. Lack of coolant supply. 3. Improve coolant supply.

F
Plastic deformation (PD)

1. Cutting speed too high. 1. Decrease cutting speed.

2. Too soft grade. 2. Choose more wear resistant grade.
Boring

3. Lack of coolant supply. 3. Improve coolant supply.

G Flank wear

1.  utting speed too high.

C 1.  ecrease cutting speed.
D
Tool holding/

2. Too soft grade. 2. Choose more wear resistant grade.

Machines

3. Feed too high. 3. Decrease feed.

4. Lack of coolant supply. 4. Improve coolant supply

H Crater wear

1. Oxidation at the cutting depth. 1. U se varying cutting depths (ramping).

2. Cutting edge temperature too high. 2. Reduce cutting speed.
Materials

Notch wear
I
Information/

B 48
Index

TH_B38-B71.indd 48 2009-11-24 08:54:06

 Products – Parting and grooving

TH_B38-B71.indd 49 2009-11-24 08:54:07

 A Parting and grooving – CoroCut® 1- and 2-edges

CoroCut® 1- and 2-edges

General turning

−U
 nique rail system for exceptional
B stability
Parting and grooving

− One or two-edged system

−D
 edicated geometries and grades
for all materials

C −S
 urface finish due to Wiper
technology

− Tailor Made inserts available

Threading

Insert seat Insert width, Ia, Max. cutting depth, ar, for
size mm CoroCut 2 insert, mm
Milling

D 1.5 12.9
E 2 19
F 2.5 18.9
E G 3 18.8
H 4 23.7
Insert width, Ia, mm J 5 23.6
K 6 23.5
L 8 28.4
Drilling

M 9 - 11 -
R 15 -
Applications
F

Parting off Grooving Turning Profiling (Round) Aluminium profiling

Page B 14 B 19 B 32 B 29 B 30
Boring

G
Finishing
-CF -GF -TF
Low feed
Tool holding/
Machines

Medium
Medium feed -CM -GM -TM -RM -AM

Roughing
-CR
H High feed

Optimizer
Chip control -RO
Materials

Sharp -CS -RS -RS

ER treated -GE -RE

I
Information/

B 50
Index

TH_B38-B71.indd 50 2009-11-24 08:54:10

 Parting and grooving – CoroCut® 1- and 2-edges A

General turning
Tool holder recommendation Insert

The CoroCut system is based on Rail- and V-shaped designs

for exceptional stability.
Note: The holder seat size must correspond with the insert
seat size. Otherwise, use a long insert mounted with the B
shortest possible overhang to avoid vibration and deflection.

Parting and grooving

V-shape Rail-shape

Holder

C
Insert grade recommendation
Universal grades Universal grades

Threading
GC1125 GC2135 – first choice for stainless steel
ISO ISO
First choice for parting off tubes, For operations demanding toughness,
P M grooving and turning operations. P M such as parting off to centre and
K S Works well on low-carbon and other K S interrupted cuts.
smearing materials.
Low to medium cutting speeds.
Low to medium cutting speeds. D

Milling
GC1145 GC3115
P M P M
S For operations demanding extreme K S A high wear resistant grade for grooving
toughness such as interrupted cuts and
parting off to centre on stainless steel.
and turning applications under stable
conditions.
E
Low cutting speeds. Also effective in hard steels.
High cutting speeds.

Drilling
HRSA
ISO
GC4225 – first choice for cast iron
GC1105
P M
Excellent combination of high wear
M S F
K resistance and good edge security.
A wear resistant grade combined with
sharp edges. To be used for finishing
To be used in grooving, turning and
with close tolerances on heat resistant
parting off operations under stable
super alloys (HRSA) and stainless steel.
conditions.
Medium to high cutting speeds.

Boring
G
Aluminium and HRSA
ISO ISO
Tool holding/

GC1005 H10
M N S
Machines

S Most suitable for roughing of aluminium. Good edge sharpness for use on
aluminium alloys and heat resistant
super alloys (HRSA).

H
Non-ferrous and titanium
ISO
H13A
M K
Materials

N S Good wear resistance and toughness combined with edge sharpness.

To be used on non-ferrous and titanium materials.

I
Information/

B 51
Index

TH_B38-B71.indd 51 2009-11-24 08:54:16

 A Parting and grooving – CoroCut® 3-edges

CoroCut® 3-edges
General turning

B −E
 conomical, shallow parting in
mass production
Parting and grooving

− Extremely small widths

− One tool holder for all inserts

C
− Tailor Made inserts available

− Blanks for do-it-yourself grinding

Threading

D
Milling

Applications
E
Parting of bars Parting of tubes Circlip grooving
B 14 B 14 B 23
Drilling

F
Boring

G
CM and CS Parting off GS Circlip grooving
Insert width, Ia, mm Insert width, Ia, mm
Tool holding/
Machines

1.0 0.5 to 2.0

1.5 2.4
2.0 2.5
H 2.7
Right-hand style insert (T) Left-hand style insert (U)
3.0
Materials

I
Information/

B 52
Index

TH_B38-B71.indd 52 2009-11-24 08:54:17

 Parting and grooving – CoroCut® 3-edges A

General turning
Tool holder recommendation
B
The CoroCut 3 tool holder is available as right and left handed. Choose insert seat

Parting and grooving

size to match holder and insert.
The clamping system is built on a strong and stable interface between holder and
insert. One holder can take all different insert widths. If insert breakage occurs,
the clamping mechanism is not affected. Index the insert and the machine can be
restarted.

Threading
CoroCut 3 holder

To facilitate easier and faster indexing of the insert, the CoroCut 3

shank holder makes it possible to reach the insert clamping screw
from both sides of the holder. This is of particular benefit in sliding

Milling
head and multi-spindles machines.

Drilling
Key torx plus - screwdriver

Insert grade recommendation

Boring
Universal grades
G
ISO
GC1125
P M
K S First choice for parting off tubes, grooving and turning operations.
Tool holding/

Works well on low-carbon and other smearing materials.

Machines

Low to medium cutting speeds.

H
Materials

I
Information/

B 53
Index

TH_B38-B71.indd 53 2009-11-24 08:54:19

 A Parting and grooving – T-Max Q-cut® 151.2

T-Max Q-Cut® 151.2

General turning

B −D
 edicated geometries and grades
for all materials
Parting and grooving

−S
 urface finish due to Wiper
technology

C − Tailor Made inserts available

− Blanks for do-it-yourself grinding

Threading

D
Milling

Applications
E
Parting off Grooving Face grooving Turning Profiling (Round) Aluminium profiling
Page B 14 B 25
Drilling

F
Finishing -7E -4G -5T
Low feed

Medium
Boring

-5E -5G -7G -4T -5P F-P

Medium feed

G Roughing
-4E
High feed
Tool holding/

Optimizer
-4G -4P
Chip control
Machines

Sharp -5F F-P F-P

H
ER treated E-G E-P
Materials

Tool holder recommendation

CoroTurn SL and adaptors for Q-Cut cutting blades can be used. See Main catalogue.
I
Information/

B 54
Index

TH_B38-B71.indd 54 2009-11-24 08:54:21

 Parting and grooving – T-Max Q-Cut® 151.2 A

General turning
Insert grade recommendations
Universal grades Cast iron B

Parting and grooving

ISO ISO
GC1125 GC4225
P M P K
S First choice for parting off tubes, Excellent combination of high wear
grooving and turning operations. resistance and good edge security.
Works well on low-carbon and other Use in grooving, turning and parting off
smearing materials. operations under stable conditions.
Low to medium cutting speeds. Medium to high cutting speeds.
C

GC2135 – first choice for stainless steel

P M

Threading
S For operations demanding toughness,
such as parting off to centre and inter- Aluminium and HRSA
rupted cuts.
Low to medium cutting speeds. ISO D
CD10
N
An extremely wear resistant grade giving
very good surface finish.
Use on non-ferrous materials and non-
metallic materials.
P M GC1145

Milling
S For operations demanding extreme
toughness, such as interrupted cuts and
parting off to centre on stainless steel.
E
Low cutting speeds.
GC1005
M N
S Most suitable for roughing of aluminium.

Drilling
P M GC235
S Parting and grooving of steel in opera-
tions requiring toughness.
Suitable for low speeds and under
Non-ferrous and titanium F
unfavourable conditions.
ISO
H13A
M K
N S Good wear resistance and toughness
combined with edge sharpness.

Boring
CT525 Use on non-ferrous and titanium
P M
materials.
A titanium-based grade with excellent
resistance to oxidation and smearing.
For high quality surface finishes when G
grooving low-alloyed steels under fairly
good conditions.
Moderate cutting speeds and feeds.
Tool holding/
Machines

Hardened materials
ISO
GC3020 CB20
P K H H
Especially recommended for grooving A wear resistant grade.
and turning in stable conditions due Use for machining of hardened mate­
to its excellent hot hardness, also rials, with limited feed and depth of cut.
effective on hard steels. Eliminates grinding operations.
Use at high cutting speeds under
Materials

good conditions.

I
Information/

B 55
Index

TH_B38-B71.indd 55 2009-11-24 08:54:28

 A Parting and grooving – T-Max Q-cut® 151.3

T-Max Q-Cut® 151.3

General turning

B −G
 ood surface finish due to Wiper
technology
Parting and grooving

− Boring bars for face grooving

C
Threading

D
Milling

Applications
E
Precision grooving Face grooving Profiling
Page B 25
Drilling

F Low feed -4G -7P

Boring

Medium feed -7G

G
Tool holding/
Machines

Tool holder recommendations

H Q-Cut 151.3 inserts in geometries 7G and 7P can only be used with holders type
R/L 151.37 or bars type R/L 151.32.
CoroTurn SL and adaptors for Q-Cut cutting blades can be used.
See Main catalogue.
Materials

I
Information/

B 56
Index

TH_B38-B71.indd 56 2009-11-24 08:54:28

 Parting and grooving – T-Max Q-Cut® 151.3 A

General turning
Insert grade recommendations
Universal grades B

Parting and grooving

ISO ISO
GC1125 GC235
P M P M
S First choice for parting off tubes, grooving Parting and grooving of steel in operations
and turning operations. requiring toughness.
Works well on low carbon and other Suitable for low speeds and under
smearing materials. unfavourable conditions.
Low to medium cutting speeds.
C

P M GC2135 – first choice for stainless steel GC3020

P K

Threading
S For operations demanding toughness, Especially recommended for grooving and
such as parting off to centre and turning in stable conditions due to its
interrupted cuts. excellent hot hardness.
Also effective on hard steels.
Low to medium cutting speeds.
To be used at high cutting speeds under
D
good conditions.

Milling
GC1145 GC3115
P M P K
S For operations demanding extreme A high wear resistant grade for grooving and
toughness, such as interrupted cuts and
parting off to centre in stainless steel.
turning applications under stable conditions. E
Also effective on hard steels.
Low cutting speeds.
High cutting speeds.

Drilling
F
Cast iron
ISO
GC4225
P K
Excellent combination of high wear resistance and good edge security.

Boring
To be used in grooving, turning and parting off operations under stable conditions.
Medium to high cutting speeds.

G
Tool holding/

Non-ferrous and titanium

Machines

ISO
H13A
M K
N S Good wear resistance and toughness combined with edge sharpness. H
To be used on non-ferrous and titanium materials.
Materials

I
Information/

B 57
Index

TH_B38-B71.indd 57 2009-11-24 08:54:33

 A Parting and grooving – CoroCut® SL

CoroCut® SL
General turning

CoroCut SL is a universal modular system designed so that you can • CoroCut for face grooving and grooving applications
build your own tool for your grooving applications.
• CoroCut 3 for economical grooving
B The system consists of straight and face grooving blades for external
and internal use. Blades are available for CoroCut and Q-Cut. • CoroCut XS for precision grooving
Parting and grooving

• Q-Cut 151.2 for deep grooving

• Q-Cut 151.3 for small internal diameters

C External
Left hand Right hand
Threading

90° 0° 45° 0° 0° 45° 0° 90°

D
Right hand Left hand
Milling

A curve A curve

E 90° 90°

B curveNamnlöst-1 1 2009-08-31 09:29:34 B curve

Drilling

Left-hand tool = left-hand Right-hand tool = right-hand

adaptor+right-hand cutting blade adaptor+left-hand cutting blade
F

Internal
Boring

Left hand Neutral Right hand

G
Tool holding/
Machines

Left-hand tool = left-hand Right-hand tool = right-hand

H adaptor+left-hand cutting blade adaptor+right-hand cutting blade
CoroCut SL blades Other CoroTurn SL CoroCut SL blades
Left hand - cutting heads Right hand
Materials

The CoroCut SL system includes adaptors in 0°, 90° and 45° styles in Coromant Capto and shank holder versions.
I
Information/

B 58
Index

TH_B38-B71.indd 58 2009-11-24 08:54:34

 Parting and grooving – CoroCut® SL A

General turning
Cutting blades can be mounted on 570 adaptors in both solid The bars should always be mounted with the shortest possible
steel and dampened bars versions. overhang to avoid vibration and deflection.

Parting and grooving

C

Threading
Coolant connection – good chip evacuation and longer tool life
All blades have a coolant connector at the back of the insert. This allows cutting
D
fluid to be directed exactly to the cutting edge. The system also includes adaptors to
make it easy to fit coolant tubes over and under the blades.

Milling
E

Drilling
CoroCut SL and Q-Cut SL cutting blades have a built-in coolant tube location in the F
centre of the coupling. The tube have a hole on one side to direct coolant towards
the cutting edge. If the coolant tube is replaced, use a screw driver to locate the
position of the coolant hole.

Boring
G
Tool holding/
Machines

Coromant Capto adaptors are delivered with top and bottom plugs, which can be
removed and replaced with coolant tubes for maximum coolant supply. This provides
longer tool life for the insert and enables higher cutting data. The coolant tubes
must be purchased separately as spare parts. Adjustment of the coolant tubes H
(made of copper) must be done individually.
Materials

I
Information/

B 59
Index

TH_B38-B71.indd 59 2009-11-24 08:54:34

 A Parting and grooving – T-Max U-Lock® 154.0

T-Max U-Lock® 154.0

General turning

B −S
 harp cutting edges for high quality
grooves
Parting and grooving

− Both external and internal grooves

C − Insert is easy to identify - groove

width is imprinted on the insert
Threading

D
Milling

Applications
E
Insert width, Max. cutting
Ia, mm depth, ar, mm Circlip depth, mm
Circlip grooving external Circlip grooving internal 1.10 0.7 0,5 11
B 23 B 23 1.10 0.7 0,5 16
1.30 1.6 0,9 16
Drilling

1.60 1.85 1,2 16

1.85 1.85 1,4 16
F 2.15 1.85 1,7 16
1.85 2.2 1,4 22
2.15 2.2 1,7 22
2.65 2.2 1,9 22
3.15 2.2 2,0 22
4.15 2.6 2,9 22
Boring

G
Tool holding/
Machines

H
Insert grade recommendations
Universal grades
ISO
Materials

GC1020
P M K
N S H Good all-round PVD-coated grade for all materials.
Good wear resistance and edge sharpness.
I Low feed.
Information/

B 60
Index

TH_B38-B71.indd 60 2009-11-24 08:54:35

 Parting and grooving – T-Max® ceramic A

T-Max® ceramic

General turning
−S
 harp cutting edges for high quality
grooves
B

Parting and grooving

−B
 oth external and internal
machining

Threading
D

Milling
Applications Insert width, Seat
Ia, mm size 1)
E
Grooving 3.17 1
Profiling Grooving Internal 4.75 2
6.35 3
7.93 4

Drilling
9.52 4

Profiling 1
F
3.17
4.75 2
6.35 3

Boring
G
Tool holder recommendations
Use shank holders or boring bars with screw clamp intended for T-Max ceramic inserts.
Tool holding/

Make sure that the seat size on the holder corresponds to the insert size 1).
Machines

H
Insert grade recommendations
HRSA hardened materials
ISO
Materials

CC670
S H
A silicon carbide whisker-reinforced grade.
Recommended for heat-resistant alloys and hard part machining.
I
Information/

B 61
Index

TH_B38-B71.indd 61 2009-11-24 08:54:36

 A Parting and grooving – CoroCut® XS

CoroCut® XS
General turning

B −A
 ll inserts fit into the same tool
holder
Parting and grooving

−E
 asy indexing and good access­
ibility when changing inserts

− Blanks for do-it-yourself grinding

C
Threading

D
Milling

Insert width, Max. cutting

Applications Ia, mm depth, ar, mm
Parting off
E 0.70 4.3
6.3
1.00
Parting off Grooving 1.50 6.3
Page B 14 B 19 2.00 8.2
2.00 8.5
2.50 8.2
Drilling

Grooving 0.50 1.3

0.75 2.5
F 1.00 2.7
Low feed MACR MAGR 1.25 2.7
1.50 3.7
1.75 3.7
2.00 3.7
3.7
Boring

2.50

G
Tool holder recommendations
All inserts fit into the CoroCut XS shank holders.
Tool holding/

Also available for CoroTurn SL-cutting heads. See Tool holding/Machines, Chapter G.
Machines

H Insert grade recommendation

ISO
GC1025
P M
N S An excellent all-round grade for all ISO-areas.
Materials

The thin coating makes it suitable for sharp edges.

Low to medium cutting speeds.
GC1105
I
Suitable for ISO S and ISO M under stable conditions.
Information/

B 62
Index

TH_B38-B71.indd 62 2009-11-24 08:54:37

 Parting and grooving – CoroTurn® XS A

CoroTurn® XS

General turning
− Sharp cutting edges
B

Parting and grooving

−B
 oring bars are designed with
internal coolant supply

−A
 ccurate clamping for correct
orientation

Threading
D

Milling
Applications
E
Grooving Face grooving Profiling Pre-parting
Page B 40 B 40 B 40 B 40

Drilling
CXS-..G CXS-..F CXS-..R CXS-..GX
Low feed
F

Boring
G
Insert geometry recommendations
Tool holding/

Insert size mm Type of operation

Machines

G = Grooving
F = Face grooving
R = Profiling full radius insert H
04 = 4 mm GX = Pre-parting insert
05 = 5 mm
06 = 6 mm
Materials

07 = 7 mm

I
Information/

B 63
Index

TH_B38-B71.indd 63 2009-11-24 08:54:38

 A Parting and grooving – CoroTurn® XS

CoroTurn® XS
General turning

Tool holder recommendations

The CoroTurn XS tooling system has four insert sizes dedicated to
B different bore diameters. Also, a range of various lengths is available for
specific applications. However, the shortest possible overhang should
Parting and grooving

always be the first choice.

The boring bars are designed with internal cutting fluid supply.

The assortment also consists of shank holders for internal machining and
Threading

sliding head machines, and Coromant Capto units for turning and rotating
applications. For more information, see Tool holding/Machines, Chapter G.

D
Milling

Application hints
CoroTurn XS holders and inserts are made to withstand the demands of
E different applications. Accurate clamping of the insert ensures correct
centre height.
Drilling

F
Boring

G
Insert grade recommendations

ISO
Tool holding/

GC1025
Machines

P M
N S An excellent all-round grade for all ISO-areas.
The thin coating makes it suitable for sharp edges.
Low to medium cutting speeds.
H
H10F
Uncoated carbide grade.
Materials

Good edge sharpness for use on aluminium alloys and heat resistant super alloys (HRSA).
CB7015
CBN grade, suitable for ISO H hardened steel.
I
Information/

B 64
Index

TH_B38-B71.indd 64 2009-11-24 08:54:38

 Parting and grooving – CoroCut® MB A

CoroCut® MB

General turning
− Front-mounted exchangeable insert
B

Parting and grooving

− Sharp cutting edges

−E
 asyFix for lower vibrations and fast
set-up
C

Threading
D

Milling
Applications
E
Grooving Face grooving Profiling Pre-parting
Page B 40 B 40 B 40 B 40

Drilling
Low feed MB-07G
MB-09G
MB-09FA
MB-09FB
MB-07R
MB-09R
MB-07GX
F

Boring
G
Insert geometry recommendations
Insert size mm Type of operation
Tool holding/
Machines

G = Grooving
FA = Face grooving A-curve
FB = Face grooving B-curve
H
R = Profiling full radius insert

07 = 7 mm, min hole Ø 10 mm GX = Pre-parting insert

09 = 9 mm, min hole Ø 14 mm

Materials

I
Information/

B 65
Index

TH_B38-B71.indd 65 2009-11-24 08:54:39

 A Parting and grooving – CoroCut® MB

CoroCut® MB
General turning

B Tool holder recommendations

Bars are available in two designs:
Parting and grooving

• Steel shank bars for overhangs up to 3 x bar diameter.

• Carbide shanks for overhangs up to 5.5 x bar diameter.
Both designs are available for coolant connector.

C EasyFix clamping can be used for lower vibrations and precise centre height
of the insert. For more information, see Main catalogue.
Threading

EasyFix

D
Milling

E Insert grade recommendations

ISO
P M GC1025
N S An excellent all-round grade for all ISO-areas.
Drilling

The thin coating makes it suitable for sharp edges.

Low to medium cutting speeds.

F CB7015
CBN grade, suitable for ISO H hardened steel.
Boring

G
Tool holding/
Machines

Namnlöst-1 1

H
Materials

I
Information/

B 66
Index

TH_B38-B71.indd 66 2009-11-24 08:54:39

 Parting and grooving – Extended offer A

Extended offer

General turning
Blanks for do-it-yourself grinding
B
CoroCut® 1- and 2-edges CoroCut® 3-edges

Parting and grooving

N123-BG CoroCut 2-edge blank. N123-BG CoroCut 3-edge blank.

C
R/L123-BG CoroCut 1-edge blank in 90º angle.
T-Max Q-Cut® 151.2

151.2-4B Q-Cut blank.

Threading
Blank with preformed chipbreaker.

R/L123-BG CoroCut 1-edge blank in 45º angle.

D
151.2-3B Q-Cut blank.

Milling
N123-BG CoroCut 2-edge blank in 90º T-shape. E
CoroCut® XS

MAXR/L CoroCut XS blank.

Drilling
F
Grinding wheel properties

Grain size: US Mesh 170-240 (75–55 mm).

Boring
Binder: Metal
Concentration: 75–100
Solutions for different products and applications can be made, see the following example.
G
Tool holding/
Machines

H
Materials

I
Information/

B 67
Index

TH_B38-B71.indd 67 2009-11-24 08:54:40

 A Parting and grooving – Extended offer

Tailor Made
General turning

Grooves are often designed in many different shapes and dimensions depending
on the working area. With Tailor Made tools, you can increase productivity and
B generate grooves that would be impossible to produce with standard tools.
We tailor inserts and tool holders to suit your specific component requirements.
Parting and grooving

Contact your Sandvik Coromant representative and we will give a quick quotation
with competitive price and delivery.
If you are grooving for mass production and the groove requires chamfering
(option 16), the use of Tailor Made inserts can reduce your cycle time by up
to 50%.
C
Threading

D
Inserts
Choose a suitable shape option for inserts (see below); actual
dimensions available in the Main catalogue.
Milling

Insert shape options

E 1 2 3 4 5
Drilling

6 7 8 9 10
F
Boring

11 12 16 17

G
Tool holding/
Machines

H
Materials

I
Information/

B 68
Index

TH_B38-B71.indd 68 2009-11-24 08:54:42

 Parting and grooving – Extended offer A

General turning
Tool holders
Both conventional tool holders and Coromant Capto are
available in different styles and for different applications.
B

Parting and grooving

CoroCut and T-max Q-Cut for parting and grooving
Holder Options
C
Shank Coromant Capto Tool Holder Clamping Machine limitations
holders design style system

Threading
N
D
L
L

Reinforced blade

Milling
parting
Reinforced blade
face grooving Blade type Copy angle

Drilling
How to apply
F
General parting of bars
Tailor Made tool holders, with ar (min. length) optimized for the component,
enable the use of higher cutting data and ensure longer tool life. Together,
this offers you better productivity.

Boring
Reinforced blades, optimized according to your bar size diameter, also enable
the use of higher cutting data and ensure longer tool life in parting off operations.
This again offers higher productivity.
G
Tool holding/
Machines

Engineered products
Our tool design facility is able to produce even more complicated products,
including inserts and tool holders that comply with your specific requirements.
H
Contact your Sandvik Coromant representative for more details.
Materials

I
Information/

B 69
Index

TH_B38-B71.indd 69 2009-11-24 08:54:43

 A Parting and grooving – grade information

Grade information
General turning

The CoroCut family includes a variety of different carbide Cubic boron nitride (CB7015) and diamond (CD10) tipped
grades to cover all types of workpiece materials. inserts are also available.
B
From the high wear resistant GC3115, to the toughest grade These grades have been developed to cope with the most
Parting and grooving

on the market, GC2145. complex parting and grooving applications.

C Application Toughness First choice Wear resistance Grades

GC3115
Parting off P GC2135 GC1125 GC4225
bars M GC1145 GC2135 GC1125 •B
 ased on a hard substrate, MT-CVD coated with a TiCN-Al2O3
K GC1125 GC4225 GC3115 layer.
Threading

Parting off P GC2135 GC1125 GC4225 •A

 high wear resistant grade for grooving and turning applica-
tubes M GC2135 GC1125 GC1105 tions under stable conditions.
K GC1125 GC4225 GC3115
Turning P GC1125 GC4225 GC3115 • Also effective on hard steels.
D M GC2135 GC1125 GC1105 • High cutting speeds.
K GC4225 GC3115
N H13A GC1005 CD10
S GC1125 GC1105 S05F GC4225 – first choice for cast iron
H CB7015
•B
 ased on a hard gradient sintered substrate, MT-CVD coated
Milling

Profiling P GC1125 GC4225 GC3115

with a TiCN-Al2O3-TiN layer (black and yellow).
M GC2135 GC1125 GC1105
K GC1125 GC4225 GC3115 •A
 n all-round grade for ISO-P and ISO-K with an excellent
E N GC1005 GC1005 CD10 combination of high wear resistance and good edge security.
S GC1125 GC1105 S05F To be used in grooving, turning and parting off operations
H CB7015 under stable conditions.
Grooving P GC1125 GC4225 GC3115 • Medium to high cutting speeds.
M GC2135 GC1125 GC1105
Drilling

K GC4225 GC3115 H13A

N GC1125 GC1005 CD10 GC1125 – the universal grade
S GC1125 GC1105
F H CB7015 • A fine grained substrate, PVD-coated with a TiAlN layer.
Face P GC2135 GC1125 GC4225 •A
 n excellent all-round grade in all ISO-areas. First choice for
grooving M GC1145 GC2135 GC1125 parting off tubes, grooving and turning operations and works
K GC1125 GC4225 GC3115 well on low-carbon and other smearing materials.
N GC1125 GC1005 CD10
• Low to medium cutting speeds.
Boring

S GC2135 GC1125 GC1105

H CB7015 • If you are parting to centre on stainless steel, use GC2135.
Undercutting P GC1125
G M GC1125
K GC1125 GC2135 – first choice for stainless steel
N H13A • A MT-CVD-coated grade with a TiCN-Al2O3-TiN layer.
S H13A
Tool holding/

•A
 grade for operations demanding toughness, such as
Machines

parting off to centre and interrupted cuts.

P ISO P = Steel
• Low to medium cutting speeds.
M ISO M = Stainless steel
H
K ISO K = Cast iron GC1145
• T he market’s toughest substrate, PVD-coated with a TiAlN
N ISO N = Non-ferrous material
layer.
S
Materials

ISO S = Heat resistant super alloys • F or operations demanding extreme operations, such as
interrupted cuts and parting off to centre in stainless steel.
H ISO H = Hardened materials
• Low cutting speeds.
I
Information/

B 70
Index

TH_B38-B71.indd 70 2009-11-24 08:54:43

 Parting and grooving – grade information A

General turning
S05F GC1025
•M
 T-CVD-coated TiCN-Al2O3-TiN layer at a fine grained carbide • A fine grained substrate, PVD-coated with a TiAlN layer.
substrate. For roughing to finishing in HRSA-materials.
• An excellent all-round grade for all ISO-areas. The thin
coating makes it suitable for sharp edges.
GC1005 • Low to medium cutting speeds. B

Parting and grooving

•A
 fine grained carbide substrate, PVD-coated with a TiAlN
layer.
• Most suitable for roughing of aluminium.

H10
• Uncoated carbide grade. C
•G
 ood edge sharpness for use on aluminium alloys and heat
resistant super alloys (HRSA).

Threading
Grade H13A – first choice for non-ferrous materials
• Uncoated carbide grade.
•G
 ood wear-resistance and toughness combined with edge D
sharpness.
• To be used on non-ferrous and titanium materials.

Milling
GC1105 – first choice for HRSA
•A
 fine grained carbide substrate, PVD-coated with a TiN-TiAlN
layer. E
•A
 wear resistant grade combined with sharp edges. To be
used for finishing with close tolerances on HRSA and
stainless steel.

Drilling
CD10 – first choice for finishing aluminium
• A polycrystalline diamond (PCD) grade.
F
•A
 n extremely wear resistant grade offering very good surface
finish. To be used only for non-ferrous materials.

CB7015 - first choice for hardened materials

Boring
•H
 igh performance cubic boron nitride composite for
hardened ferrous materials.
• Suitable for both continuous and interrupted cuts. G

CB20
Tool holding/
Machines

• A cubic boron nitride (CBN) grade.

•A
 wear resistant grade. To be used for machining of
hardened materials, with limited feed and depth of cut.
Eliminates grinding operations. H

GC1020
•G
 ood all-round PVD-coated grade for all materials. Good wear
Materials

resistance and edge sharpness. Low feed.

Cutting speed recommendations, see Main catalogue. I

Information/

B 71
Index

TH_B38-B71.indd 71 2009-11-24 08:54:43