SANDVIK MH621 ROADHEADER

PRODUCT PRESENTATION
REF.NO.: MH621Ex_2021.305_rev1 & MH621nEx_2021.306_rev1
SAFETY FIRST

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 COMPLIANCE
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responsibility to combat corruption.

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TABLE OF CONTENTS
SANDVIK MH621 ROADHEADER – SMART & STRONG
• BACKGROUND, HISTORY AND PRODUCT FEATURES
• OVERVIEW, WALKAROUND AND MACHINE BASICS
• OVERVIEW OF MACHINE MAIN COMPONENTS
• OVERVIEW OF MACHINE OPTIONAL ITEMS
• SANDVIK MH621 ROADHEADER IN ACTION
• COMPETENCES AND SERVICES
− ENGINEERING EXCELLENCE
− TRAINING EXPERIENCE
− PARTS AND SERVICE SUPPORT
− SANDVIK 365

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BACKGROUND, HISTORY
AND PRODUCT FEATURES
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BACKGROUND
SANDVIK MH621 ROADHEADER
• Smart, strong and powerful for
optimized excavation of rock >100MPa
uniaxial compressive strength
• Flexibility of cutting various tunnel
profile shapes and sizes
• Smooth and accurate excavation
without effecting rock mass around
tunnel excavation
• Clean operation by using electric
power
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HISTORY
MR620 FOR COAL AND MH620 FOR HARD ROCK MERGE TO NEW MH621
• MR620 / AM 100 / AM 105 • MH620 / MT620 / AHM 105-IC
− Mainly used for tunnel development in − Mainly used for tunnel development in
coal mines hard rock mines
− But also used for soft mineral − But also for gemstone production in
production in rock salt / potash mines diamond mines
− And for civil tunnel excavation − And for civil tunnel excavation
− 113 units sold until end of 2018 − 42 units sold until end of 2018

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5 REASONS WHY CHOOSE
SANDVIK MH621 ROADHEADER

• Improved safety features ensure safe underground working conditions and less
operational hazards
• Heavy duty, robust machine design and ICUTROC cutting technology for hard rock
application increase machine availability and reduce machine service costs
• Optional machine guidance system significantly improves profile accuracy and
decreases tunneling costs
• A number of different cutter heads for a wide range of rock conditions and
applications serves for high versatility in machine operation
• Various digitalization options optimize customer value

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SANDVIK ROADHEADER
VALUE PROPOSITION
FEATURE BENEFIT VALUE TO CUSTOMER

• Operating machine from safe place via radio remote control

• FOPS operator cabin (optional) Improved operator safety
• Noise and dust suppressed cabin (optional) and comfort
• Air condition and special filter systems for cabin (optional) SAFER WORKING
CONDITIONS WITH
• Fire suppression system (optional) SAFER MACHINE FOR
Reduced risk of fire OPERATIONAL
PERSONNEL

• Good visibility and efficient lights Reduced risk of collisions LESS HAZARDS AND
with other equipment or INCIDENTS IN
people UNDERGROUND WORK

• Risk assessment for each machine IMPROVED SAFETY

High safety standards FOR ALL PERSONS
WORKING
• Ground level daily maintenance Improved maintenance UNDERGROUND
safety, reducing risk of
tripping and falling off the
machine

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SANDVIK ROADHEADER
VALUE PROPOSITION
FEATURE BENEFIT VALUE TO CUSTOMER

• SANDVIK global competence and local support network

• Quality assurance through strict testing and quality High quality training,
management product support, service
LESS DOWNTIME
and spare parts available
when required

• Robust layout and heavy duty design of machines referring

to challenging underground environment GOOD AVAILABILITY &
Less breakdowns
LONG LIFETIME

• SANDVIK’s long time competence in mechanical cutting and BEST TOOLS SUPPLY
Well proven machine-tool-
underground rock excavation FOR MACHINE AND
rock interaction
APPLICATION

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SANDVIK ROADHEADER
VALUE PROPOSITION
FEATURE BENEFIT VALUE TO CUSTOMER

• Robust layout and heavy duty design for

underground environment Less time for service required, HIGH AVAILABILITY AND
• Easy access to service points less breakdowns REDUCED SERVICE COSTS

• Capability to mine any face configuration

One machine for different
• Capability to cut different rock types HIGH VERSATILITY, HIGH
tunnel shapes and applications,
• Continuous excavation UTILIZATION
no idle time for any adjustments
• Selective cutting

• Smooth excavation Better rock mass stability, no COST SAVINGS IN ROCK

• Precise excavation blast vibrations, no overprofile, REINFORCEMENT, SUITABILITY
• Low vibration emission less rock support FOR URBAN TUNNELING

• Multiple activities performed by one machine No need for extra equipment,

• Availability of many optional features adaption to different “ONE-FOR-ALL-SOLUTION”
requirements

• Self-advancing excavation equipment ONE UNIT FOR MULTIPLE FACE

Cutting tunnel face and cross
• High mobility OPERATIONS AND
cuts with one unit
• Possible to cut full face or sections EXCAVATION SEQUENCES
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OVERVIEW, WALKAROUND
AND MACHINE BASICS
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OVERVIEW AND WALKAROUND
Cutter head Arch lifting device
(optional)
Telescopic
cutter boom Chain conveyor
Turret
with cutter
motor
Hydraulic
Frame equipment
Electric
equipment Loading Monitored,
table with high pressure
loaders water spraying
system

Rear stabilizers Crawler tracks

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 Double chain

OVERVIEW AND WALKAROUND

conveyor

Turret

Monitored, high
pressure water
spraying system

Rear stabilizer

Hydraulic
equipment
Crawler tracks
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 Double chain

OVERVIEW AND WALKAROUND

conveyor

Turret
Cutter head

Loading
table with
loaders

Rear stabilizer

Hydraulic
equipment
Crawler tracks
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OVERVIEW AND WALKAROUND
Telescopic
cutter boom
Frame
with cutter
motor

Cutter head

Electric
equipment

Rear stabilizer
Cutter gear
Loading
table with
loaders
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OVERVIEW AND WALKAROUND
Cutter gear
Frame
Cutter head

Electric
equipment
Telescopic
cutter boom
with cutter
motor
Rear stabilizer

Loading
table with
loaders
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OVERVIEW AND WALKAROUND
Cutter head

Turret

Double chain
conveyor

Monitored, high
pressure water
spraying system

Cross shifting
device

Loading
table with
loader
motors
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Crawler tracks
OVERVIEW AND WALKAROUND Cutter head

Turret
Top platform

Double chain
conveyor

Loading
table with
loader
motors

Cross shifting
19 device Crawler tracks
MACHINE DIMENSIONS

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MACHINE DIMENSIONS

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MACHINE DIMENSIONS

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CUTTING
DIMENSIONS
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BASICS
Item Figure Unit
Weight ~ 120 [t]
Ground pressure ~ 0.19 – 0.23 [N/mm²]
Total installed power 504 (Ex) / 522 (nEx) [kW]
Maximum navigable in- & +/- 18 [°]
decline gradient
Maximum navigable side +/- 5 [°]
gradient
Cone / basin radius ~ 25 [m]

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INDICATIVE EXCAVATION PERFORMANCE
• Net cutting rate graphs Net Cutting Rate for MH621 (300 kW installed cutter head power)
equipped with Cutter Head R425-TC72 and 22 mm TC Diameter Picks

available for all types of

according to Uniaxial Compressive Strength for Intact to Moderately Fractured Rock Mass
for Cross Sections < 35 m²

cutter heads in combination 180

Extreme range of application

with certain pick types for

170
in exceptional operating conditions Please note:
160
Uniaxial Compressive Strength is measured on H:D=1:1
150

optimized rock excavation

specimens with 50 m m diameter @ 10 kN/s.

Uniaxial Compressive Strength [MPa]

140
Advanced range of application The volume of cut rock per effective net cutting time (counted
130 in net cutting hours ... nch) defines the net cutting rate. The
in challenging operating conditions effective net cutting time is defined by the time the cutter head
120 is in contact w ith the rock and actually cutting. Thus,

• Support for excavation 110

100
Normal range of application
supplementary actions of the cutter head like profiling and
loading or any idling time during cutting operation does not
contribute to the effective net cutting time.

performance assessment
90 For calculating m achine productivity or excavation
in usual operating conditions
80 performance, please consider that the ratio of machine
operating hours to net cutting hours is usually about 2:1
70 (ranging from 1.5:1 to 2.5:1). This difference in the times is

as special customer service 60

50
caused by a number of delays and standstills (non-productive
times) during cutting operation, when the machine is operated
at the face.

including on-site sampling

40
30
20

and in-house rock testing 10

0
0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160
Net Cutting Rate [solid m³/nch]

very tough rock normal rock very brittle rock

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INDICATIVE TOOL CONSUMPTION
Specific Pick Consumption (SPC) for Low Speed Cutting

• Specific pick consumption with Transverse Cutterhead and 22 mm TC Diameter Picks of High Quality

graphs available for certain 10,000

Uniaxial Compressive Strength measured on H:D=1:1
specimen with 50 mm diameter @ 10 kN/s

pick types related to

optimized excavation Extreme range of application

Specific Pick Consumption [picks/solid m³]

1,000

performance Advanced range of application

Normal range of application
CAI=0,5
CAI=1,0

• Support for cutting tool

CAI=1,3
0,100 CAI=1,8
CAI=2,3

consumption assessment as CAI ..... CERCHAR Abrasivity Index measured on

rock surface of natural roughness (e.g. surface of
broken Brazilian Tensile Strength test specimen)
CAI=3,0
CAI=4,5

special customer service

using original CERCHAR testing apparatus and test
picks w ith HRC=54-56
0,010

including on-site sampling Effective minimum specific pick consumption: 0,005 picks/solid m³

and in-house rock testing

0,001
0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180
Uniaxial Compressive Strength [MPa]

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OVERVIEW OF MACHINE
MAIN COMPONENTS
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CUTTER HEADS INCLUDING CUTTER PICKS
3 types of cutter heads available
referring to different rock strength
ranges defined by uniaxial
compressive strength (UCS):
• R425-TC38: from 10 to 60 MPa
• R425-TC60: from 30 to 100 MPa
• R425-TC72: from 70 to 140 MPa

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CUTTER HEAD APPLICATION / PERFORMANCE
Net Cutting Rate for MH621 (300 kW installed cutter head power)
• R425-TC38 equipped with Different R425-TC Cutter Heads and 22 mm TC Insert Picks
according to Uniaxial Compressive Strength for Intact to Moderately Fractured Rock Mass

*R425-TC87 is a non-standard cutter head and only will be offered in exceptional cases!
180
170 For Cross Sections < 35 m ²
160 R425-TC87* R425-TC72 nch ….. net cutting hour
150
140

Uniaxial Compressive Strength [MPa]

130 R425-TC60 R425-TC38
• R425-TC60 120
110
100
90
80
70
60
50
40
30
• R425-TC72 20
10
Uniaxial Compressive Strength measured on
H:D=1:1 specimen with 50 m m diameter @ 10 kN/s

0
0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160
Net Cutting Rate [solid m³/nch]

R425-TC38 R425-TC60 R425-TC72 R425-TC87

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CUTTER GEAR CG425 INCLUDING COUPLING
• Weight: ~ 5.2 t
• Cutting speed:
− 1.48 m/s @ 50Hz
− 1.60 m/s @ 60Hz
• Gear oil capacity: ~ 140 l
• Gear oil pump flow system
• Gear oil filtering and cooling system
• Gear oil temperature monitoring
• Gear oil pressure monitoring

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CUTTER BOOM INCLUDING CUTTER MOTOR
• Telescopic cutter boom
− Extraction distance: 650mm
providing high sump-in force for
stabilized cutting without engaging
crawler tracks
• Cutter motor
− Power @ S6 mode: 300 kW
− Water cooled
providing high cutting power for
excavating strong rocks

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TURRET

• Slewing angle: +/- 37°

• Stiff and rigid rack and pinion
system providing high slewing
force for constant and powerful
cutter head operation
• Linear transducers for position
control and accurate cutting

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LOADING DEVICE WITH LOADERS
• Rigid or split version
• Loading width:
− 3.5 m (standard)
− 4.5 m (optional)
− 4.6-5.3 m variable (optional)
• Bunkering capacity: ~ 4 m³
3.5 m
• Optional wear resistant
4.5 m
layout
• Linear transducers
for position control
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LOADER DRIVE UNIT
• Electrically driven loaders (std.)
− Loading power: 2 x 36 kW
− Output speed: ~ 29 rpm
• Hydraulically driven loaders (opt.)
− Loading power: 2 x 65 kW
− Output speed: ~ 35 rpm
• Loader gear ratio: 49.78
• Highly effective loading of cut
material @ optimized wear
behavior of loading unit

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STRAIGHT DOUBLE CHAIN CONVEYOR (STD)
• Wear resistant layout
• Width: ~ 600 mm
• Maximum capacity: ~ 300 m³/h
• Conveyor chain type DIN 22252-2
− 19 x 64.5 mm
• Running monitoring
• High capacity and variable loading
onto different load and haul
equipment / vehicles

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CONVEYOR DRIVE UNIT Electric

• Hydraulic drive (standard) Hydraulic

− Conveying power: 1 x 65 kW
Conveying speed: ~ 0.5-0.9 m/s
− Pressure monitoring
• Electrical drive (standard)
− Conveying power: 2 x 36 kW
(only together with hydraulic
loader drives)
− Conveying speed: ~ 0.9 m/s
• Constant loading of cut material

36
SLEWING SINGLE CHAIN CONVEYOR (OPTION)
• Wear resistant layout
• Width: ~ 600 mm
• Slewing range: +/- 45°
• Maximum capacity: ~ 300 m³/h
• Standard Cincinnati chain
• Running monitoring
• Vertical slewing arrangement
(optional)

37
SLEWING BELT CONVEYOR (OPTION)
• Linked to double chain conveyor
• Width: ~ 800 mm
• Slewing range: +/- 37°
• Running speed: ~ 1.6 m/s
• Running monitoring
• Belt slip monitoring
• High capacity and flexibility for
loading onto different load and haul
equipment / vehicles

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CRAWLER TRACK SYSTEM
• Standard: High crawler track
system for quick machine relocation
• Track frame bolted to main frame
• Track chain width: ~ 720 mm
• Track length on ground: ~ 3800 mm
• Track overall width: ~ 2600 mm
• Track tensioning device (2 x)
• Optional: Low crawler track system
for installation of integrated dust
intake tubes / channels

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CRAWLER TRACK DRIVE UNIT
• Hydraulic drive (Ex / nEx)
− Tramming power: 2 x 50 / 70 kW
• Track gears (2 x)
• Tramming speed: ~ 0-17 m/min
• Track brake release (2 x)
• Tramming @ certain speed ranges
by 3 stages of tramming power
• Tramming in both directions @ full
speed range

40
MAIN FRAME WITH STABILIZERS
• Solid frame construction (standard)
• Split frame construction (optional)
• Rear bottom stabilizer linked via
pins to machine frame
• Rear bottom stabilizers
synchronized movement
(1 solenoid)
• Option: Rear bottom stabilizers
separate movement
(2 solenoids)

41
MAIN FRAME WITH CROSS SHIFTING DEVICE
• Rear bottom stabilizers auto
function DOWN for quick machine
stabilization
• Rear bottom stabilizers auto
function UP for quick machine
forward and backward tramming
• Optional cross shifting device for
easier machine positioning

42
ELECTRIC SYSTEM INCLUDING PLC UNIT
• Main panel SANDVIK SMV Ex-11
• Control system PLC B&R X90
• Monitoring and data logging (SCU,
data via OPC available, FDM
ready)
• Display integrated in main panel
• Type of solenoid valves 24 V Ex
• SIL 2 emergency stop on main
panel & machine
• SMS 3 control system for ITP
spraying system
43
ELECTRIC SYSTEM INCLUDING PLC UNIT

• Main panel SANDVIK SMV nEx-12

• Control system PLC B&R X20
• Monitoring and data logging (SCU,
data via OPC available, FDM
ready)
• Display integrated in main panel
• Type of solenoid valves 24 V nEx
• SIL 2 emergency stop on main
panel & machine

44
RADIO REMOTE CONTROL
• Easy to operate radio remote
control enables machine
operation from safe place
• Full control over all operational
machine functions
• High functional reliability

45
HUMAN MACHINE INTERFACE (HMI)
• Clear and straight information for
easy and effective machine control
and operation
• Full surveillance of all machine input
and output signals (I/Os) for absolute
control of machine functions

46
HUMAN MACHINE INTERFACE (HMI)

47
HYDRAULIC SYSTEM
• Variable axial piston pump combination for primary functions
• Vane pump combination for secondary functions
• Maximum hydraulic pump
pressure: 330 bar
• Total hydraulic oil
volume: ~ 700 l
• Hydraulic cylinders with CrNi
standard coating
• Mineral based hydraulic fluid

48
COOLING AND SPRAYING SYSTEM
• Spraying system with ITP nozzles for
underground flame proof conditions
• The open cooling system is continuously
supplied with fresh water for machine cooling
and for water spraying for dust suppression
• Water supply temperature range: ~ 10-35°C
• Water supply volume: ~50 l/min
• Water supply pressure range: 10-50 bar
• Water booster pump station for spraying
system hydraulically driven
• Back flushing filter
49
COOLING AND SPRAYING SYSTEM
• Spraying system with flat nozzles for
underground non-flame proof conditions
• The open cooling system is continuously
supplied with fresh water for machine cooling
and for water spraying for dust suppression
• Water supply temperature range: ~ 10-35°C
• Water supply volume: ~50 l/min
• Water supply pressure range: 10-50 bar
• Back flushing filter

50
OVERVIEW OF MACHINE
OPTIONAL ITEMS
51
OPTIONAL CLOSED LOOP COOLING SYSTEM
• Closed circuit cooling
system for maximum
35°C ambient temperature

52
OPTIONAL OPERATOR STAND (FLP)

• Open, FOPS certified

operator stand with low roof
• Operator stand width: ~ 1160 mm
• Operator stand length: ~ 1450 mm
• Operator stand height: ~ 1925 mm
• Operator seat adjustable with shock
absorbers, ergonomic positioned

53
OPTIONAL OPERATOR CABIN (NON-FLP)
• Closed, air pressure-raised, FOPS
certified operator cabin with
air-condition and heating system
• Operator stand width: ~ 1340 mm
• Operator cabin length: ~ 2360 mm
• Operator stand height: ~ 1780 mm
• Operator seat adjustable with shock
absorbers, ergonomic positioned

54
OPTIONAL OPERATOR CABIN – MINIMUM AND
MAXIMUM CUTTING DIMENSIONS

55
OPTIONAL ARCH LIFTING DEVICE

• Liftable and extendable arch lifting

device for exact positioning of steel
arches for heavy rock support
installation
• Extendable and movable working
platforms for easy and safe roof
access for rock support installation

56
OPTIONAL ARCH LIFTING DEVICE – MINIMUM
AND MAXIMUM CUTTING DIMENSIONS

57
OPTIONAL ROCK BOLTING DEVICE

58
DEVICE IN PARKING POSITION – OVERVIEW

Mesh storage

Bolting unit in parking position

Extendable platform on cutter boom

Bolts and drill rod storage

Drilling tools storage

59
DEVICE IN WORKING POSITION – FACE
DRILLING FOR EXPLORATION PURPOSE

60
DEVICE IN PARKING POSITION WITH EXTENDED
PLATFORM ON CUTTER BOOM – MESH
INSTALLATION

61
OPTIONAL ROCK BOLTING DEVICE – MINIMUM
AND MAXIMUM CUTTING DIMENSIONS

62
OPTIONAL DIGITAL
FEATURES
POSITION CONTROL
• Profile and tunnel
planning with office tool
and transfer of plans to
machine
• Solution fully integrated
into machine control
system
• Profile control

63
OPTIONAL DIGITAL
FEATURES
PROFILE CONTROL

• Cutter head is kept within profile

limits
• Visualization of cutting process for
machine operator

64
OPTIONAL DIGITAL
FEATURES
CUTRONIC – AUTOMATED
CUTTING
• Planning of cutting path
referring to tunnel profile
• Fully automated cutting of one
round length / sump distance
• Automated profiling in fast
speed

65
OPTIONAL DIGITAL FEATURES
TELE-REMOTE OPERATION OF MACHINE IN SEMI-AUTONOMOUS MODE

66
OPTIONAL DIGITAL FEATURES
MACHINE OPERATIONAL DATA COLLECTION, TRANSFER AND ANALYSIS
MeCu General FDM – Fleet Data Monitoring Layout
On-board 1. Machine internal communication via FTP
PLC APC
2. Machine external communication via sFTP
.CSV .JSON 3. Data transfer directly via mobile device to IoT / FDM
.CSV  .JSON
4. Data transfer directly via mobile device to OptiMine
SCU 5. OptiMine Server
FTP sFTP
a. Data pull from SCU
sFTP .JSON b. Data transfer via USB stick
WiFi c. Data transfer to Sandvik IoT / MySandvik FDM
PLM PLM d. Defined data access for customers via customized SQL
sFTP
database
.JSON
sFTP OptiMine
Off-board Customer
sFTP Server .SQL
(*)
.JSON WiFi Optional
.JSON  .SQL external
access
LTE/GSM .SQL
Tablet (either direct to OptiMine Server
Sandvik IoT
or indirect via customized SQL
.JSON MySandvik FDM .JSON database)

(*) Application under flame proof conditions only in combination with BARTEC Tablet PC and only for specified countries / areas!
67
SANDVIK MH621
ROADHEADER IN ACTION
68
SANDVIK MH621 ROADHEADER IN ACTION
SMART AND STRONG FOR HARD ROCK MINING CONDITIONS

• Heavy-duty roadheader for mining in “hard rock conditions"

• Especially designed for small cross sections
• Weight: ~120 t
• Cutter motor power: 300 kW
• Maximum cutting area: ~48 m²
• Telescopic cutter boom
• ICUTROC cutting technology
• In total 160 units sold until 2020

69
ALROSA DIAMOND MINE
RUSSIA

70
KGHM COPPER MINE
POLAND

71
71
BARRICK GOLD MINE
USA

72
COMPETENCES AND
SERVICES

73
ENGINEERING EXCELLENCE
YOUR STRONG PARTNER
• Flexibility to design machines according to
customer requirements
• Ability to provide globally approved machine
electrics
• Safety orientated design incorporating risk and
mechanical ignition prevention assessments
• Full documentation from start of design until
delivery
(e.g. functional description document, risk
assessments, operating & spare parts manuals)

74
TRAINING EXPERIENCE
FOR SAFE AND PRODUCTIVE OPERATIONS

• Product training usually done in one to two weeks

• Product specific training on demand - classroom
training combined with practical sessions in the
workshop
• Specialized training related to machine types as:
− Hydraulic system training
− Electric system training
− Control system (PLC) training
− Mining technology for mechanical cutting machines
− Components assembly and repair training
− For gear boxes, cutter heads and drums

75
GLOBAL STRENGTH
PART'S AND SERVICES SUPPORT

• 100% quality control

− Safe products with quality standard

• Sustainable business
− Product integrity

• Quality assurance

76
SANDVIK 365
Trust the numbers!
Parts and Service Sandvik 365 App
YOU can count on!

77
SANDVIK MINING AND ROCK TECHNOLOGY
The information contained in this presentation/specification is confidential and prepared on behalf of Sandvik AB and its affiliates. Sandvik does not consent to public
disclosure, publication, presentation or reproduction of any information contained in these presentations. Recipients of the information contained in this
presentation/specification may be required to execute a Sandvik Confidentiality Undertaking at Sandvik's request.
Copyright Sandvik AB 2011

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