INDUSTRIAL PRODUCTS CATALOG

CONTENTS
General Information . . . . . . . . . . . . . . . . . . . . . . . .4-6
Product Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5
Chuck Key and Accessory Nomenclature . . . . . . . . . . . . . . . .6
Industrial Tool Holders . . . . . . . . . . . . . . . . . . . . .7-23
Industrial Keyed Chucks . . . . . . . . . . . . . . . . . . . . . . . . . . .8-10
Industrial Keyless Chucks . . . . . . . . . . . . . . . . . . . . . . . . .11-13
Tool and Work Holders . . . . . . . . . . . . . . . . . . . . . . . . . . .14-23
Portable Tool Chucks and Accessories . . . . . . . .25-30
Keyless Chucks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26-27
Keyed Chucks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Special Purpose Chucks . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Chuck Keys and Accessories . . . . . . . . . . . . . . . . . . . . . . . . .30
Technical Information . . . . . . . . . . . . . . . . . . . . .31-37
Service and Repair . . . . . . . . . . . . . . . . . . . . . . .38-39
Model Number Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
Part Number Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
Decimal Equivalent Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
Warranty Information . . . . . . . . . . . . . . . . . . . . . . . .43

Jacobs, Multi-craft, Hand-Tite, Hammerlock, Adapt-A-Drive, Super Chuck,

Rubber-Flex, and Archer are registered trademarks of Power Tool Holders, Inc.
2002 Danaher Tool Group
All rights reserved. May not be copied in whole or in part without prior authorization.
Bridgeport is a registered trademark of Bridgeport Machine.

2
Its hard to believe that a set of bruised knuckles was the impetus for one of the most
significant industrial advancements in the 20th Century.

Arthur Irving Jacobs was never one for leaving things alone. He was always improving
them - continually coming up with new ways of working and new gadgets to do the work.
Before he was 30, A.I, as he was known, had perfected a new bookbinder, a new
method for making bicycle spokes, and chains, plus many other manufacturing
advancements.

On one particular occasion, he was working with an old style drill press, trying to hold the
belt control with one hand, and applying the spanner wrench to the other. The wrench
slipped and he badly battered his knuckles. A.I. knew there had to be a better way. In a
matter of days, he had developed the first drill chuck with a toothed sleeve and key.
A few months later, he founded what would become The Jacobs Chuck Manufacturing
Company. The rest, as they say, is history.

The keyed chuck helped to transform the production process just at the time when
industrial manufacturing was about to experience its most significant growth in modern
times. Today, the concept of the original keyed chuck is an integral part of all drill chuck
technology.

It has been applied to a wide range of applications, from the most sophisticated
CNC machining to drilling with the smallest cordless portable drill.

Now a part of the Danaher Corporation family of companies, The Jacobs Chuck
Manufacturing Company maintains a global presence as a recognized leader in the
design and manufacture of precision tool and work holding devices for stationary
equipment and portable power tools.

Finding a better way through world-class innovation and world-class partnerships - thats
the driving force behind our business. Its a tradition that began with A.I. Jacobs a century
ago when he set up his first network of distributors for the toothed sleeve and keyed drill
chuck. Its a tradition we will carry forward with you.

There must be a better

way to build a chuck.
-A.I. Jacobs, 1902

3
 GENERAL INFORMATION

product index
Product Description Catalog Page

Arbors
Morse Taper to Jacobs Taper . . . . . . . . . . . . . . . . . . . . . . . .18
Straight Shank to Jacobs Taper . . . . . . . . . . . . . . . . . . . . . .18
Threaded Shank to Morse Taper . . . . . . . . . . . . . . . . . . . . . . .19
Bridgeport Taper to Jacobs Taper . . . . . . . . . . . . . . . . . . . .19
Motor Shaft Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Centers -
Standard Nose - Standard Body . . . . . . . . . . . . . . . . . . . . . . .22
Rotating (Live)
Standard Nose - Reduced Body . . . . . . . . . . . . . . . . . . . . . . .22
Extended Nose - Standard Body . . . . . . . . . . . . . . . . . . . . . . .22

Centers -
Stationary (Dead) Morse Taper, Tungsten Carbide Tipped Lathe Centers:
product index

Short Type Without Flats . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

Long Type With Flats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Long Type With Half 60 Point . . . . . . . . . . . . . . . . . . . . . . . .23

Chucks - Keyed Super Chuck Ball Bearing Chucks . . . . . . . . . . . . . . . . . . . . . .8

Industrial
Service Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Plain Bearing Industrial Chucks . . . . . . . . . . . . . . . . . . . . . .9-10
Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Chucks - Keyed
Portable Tools Professional . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Multi-Craft Chucks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Chucks - Keyless High Precision . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Industrial
High Torque / High Precision . . . . . . . . . . . . . . . . . . . . . . .11-12
Complete with CAT-V Flange . . . . . . . . . . . . . . . . . . . . . . . . .13
Complete with BT Flange . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Chucks - Keyless
Portable Tools Hand-Tite Chucks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Hand-Tite Hammer Chuck . . . . . . . . . . . . . . . . . . . . . . . . . .27
Keyless Chuck Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

4
GENERAL INFORMATION

product index
(continued) Product Description Catalog Page

Chucks -
Tap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Rubber-Flex Collet
Die Grinder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Chucks -
Adapt-A-Drive Chuck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Special Purpose
Stainless Steel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

Collets -
Rubber-Flex Tap Chuck Collets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

product index
Die Grinder Collets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Lathe Chuck Collets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Keys and Chuck Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Accessories
Keyleashes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Wedge Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Sleeves, Sockets
and Ejecting Drifts Drill Sleeves - Morse Taper
Archer Series 600 & 700 . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Extension Sockets-Morse Taper

Archer Series 800 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Turret Sockets-Morse Taper

Archer Series 500 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Ejecting Drifts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Toolholder/
Adapters CAT-V Flange to Jacobs Taper . . . . . . . . . . . . . . . . . . . . . . .14
BT Flange to Jacobs Taper . . . . . . . . . . . . . . . . . . . . . . . . . .14

5
 GENERAL INFORMATION

NOMENCLATURE

Chucks and Keys

Toolholders
NOMENCLATURE

TOOL AND WORK HOLDER DEFINITIONS

ARBOR: Chuck mounting device used to adapt standardized
chuck mounts to various machine spindle tapers. Arbors are
also used to adapt mounts to other rotating devices such as
machine spindles and lathes.

SLEEVE: Adapter for arbors when the machine spindle

requires a larger taper than is available on the arbor.

EXTENSION SOCKET: Adapting device which increases

effective spindle length and provides more flexibility when
adapting to various taper sizes.

CENTERS: Support device for a workpiece when unusually

long items or extreme accuracy are important. Available
generally as rotating (live) and stationary (dead) designs.

Chuck and Accessory

Removal Tools

REMOVAL TOOL DEFINITIONS

EJECTING DRIFT: Hardened steel accessory used to disas-
semble self-holding taper components.

WEDGES: Tapered steel plates used in pairs to disassemble

chucks from arbors and spindles.

6
Keyed Chucks
Keyless Chucks
Toolholder/Adapters
Tap Chucks
Die Grinder Chucks
Rubber-Flex Collets
Arbors
Drill Sleeves
Extension Sockets
Turret Sockets
Ejecting Drifts
Rotating Centers
INDUSTRIAL
Stationary Centers

TOOLHOLDERS
7
keyed chucks - industrial INDUSTRIAL TOOL HOLDERS

ball bearing Super Chuck Ball Bearing Chucks are designed for close
tolerance production drilling on precision equipment.
chucks
The Jacobs Super Chuck Ball Bearing Chuck is specifically engineered for heavy-duty, close tolerance production drilling.
It is adaptable to a wide range of production drilling equipment, jig borers, milling machines, lathes and radials. Utilizing a ball
thrust bearing to reduce friction in the chuck closing mechanism, it permits the application of more gripping force on drill
shanks to maximize drilling torque under the most demanding machining conditions.

FEATURES:
Ball hearing construction maximizes gripping force and drilling accuracy.
Jaws center-ground for absolute straightness and alignment.
One-piece sleeve eliminates crack between driving teeth often found in other designs.
Throughhardened sleeve teeth plus hardened nose and keyholes provide outstanding wear resistance.
Fluted sleeve standard.
Each chuck 100% inspected for performance and precision.
T.I.R. .003 maximum at half capacity.

taper mounted Capacity Range Dimensions Wgt

Model Part Minimum Maximum Mount Key Closed Length Open Length Sleeve Dia. Each
No. No. in mm in mm Jacobs No. in mm in mm in mm oz
8-1/2 N 30209 0.040 0 0.250 6.4 2JT K30 2.41 61.2 1.95 49.5 1.56 39.7 10
11N 30215 0.040 0 0.375 10.0 2JT K32 2.88 73.2 2.26 57.4 1.93 49.1 19
14N 30221 0.040 0 0.500 13.0 3JT K3 3.88 98.6 2.97 75.4 2.44 62.1 38
16N 30227 0.125 3 0.625 16.0 3JT K4 4.31 109.5 3.26 82.8 2.63 66.9 47
18N 30233 0.125 3 0.750 19.0 4JT K4 5.12 130.0 3.95 100.3 3.01 76.4 66
20N 30239 0.375 10 1.000 25.4 5JT K5 5.5 139.7 4.23 107.4 3.65 92.6 100

Chuck
Replacement parts (older models)
For the older models which do not incorporate the service kit marking on the
Key chuck nose, service parts are still available as listed in the chart below.

Chuck Key Jaws and Sleeve Thrust Race

Model Model Part Nut Unit Model Part and Balls
No. No. No. No. No. No. Part No.
8-1/2N K30 3664 7430 S8-1/2N 5089 7436
Sleeve 11N K32 3666 7431 S11N 5097 7437
14N K3 3651 7432 S14N 5506 7438
16N K4 3655 7433 S16N 5514 7439
18N K4 3655 7434 S18N 5522 7440
20N K5 3657 7435 S2ON 5530 7441
Thrust
Race & Balls

Service kits (newer models)

There have been improvements incorporated in the Jacobs Super Chuck Ball
Bearing Chuck. These necessitate a change in the service components. For the
newer chucks which call out a service kit number on the chuck nose, this kit
will include: jaws, nut, caged bearing and thrust washer.

Jaw & Nut Unit* Chuck Service Key Sleeve

Model Part Kit Model Part Model Part
No. No. No.* No. No. No. No.
8-12N 30209 30343 K30 3664 S8-1/2N 5089
11N 30215 30344 K32 3666 S11N 5097
14N 30221 30345 K3 3651 S14N 5506
16N 30227 30346 K4 3655 S16N 5514
18N 30233 30347 K4 3655 S18N 5522
Caged Bearing 20N 30239 30348 K5 3657 S2ON 5530
and Thrust
Washer* * All Newer Model Super Chuck Ball Bearing Chuck services kits include jaws, nut, caged bearing and thrust washer.

8
 keyed chucks - industrial
INDUSTRIAL TOOL HOLDERS

PLAIN BEARING The O.E.M. standard for accuracy and durability on all types of
industrial power and machine tools.
CHUCKS
The Jacobs Plain Bearing Chuck is the worlds most widely used for medium or heavy-duty portable, bench or floor mounted
power tools. This industrial quality chuck, with fully hardened and ground working components, offers exceptionally high
accuracy, gripping power and durability. Both heavy and medium duty models are available in a wide range of capacities for
use on threaded or taper mounted spindles.

FEATURES:
Heavy and Medium Duty models for threaded or taper mounting.
Jaws center-ground for absolute straightness and alignment.
One-piece sleeve eliminates crack between driving teeth often found in other designs.
Through-hardened sleeve teeth, plus hardened nose and keyholes provide outstanding wear resistance.
Each chuck 100% inspected for performance and precision.
T.I.R. .004 maximum at half capacity.

taper mounted Heavy Duty Model

Fluted sleeve standard except Model 34-33C, which is smooth and ground.

Capacity Range Dimensions Wgt

Model Part Minimum Maximum Mount Key Closed Length Open Length Sleeve Dia. Each
No. No. in mm in mm Jacobs No. in mm in mm in mm oz
3A 6223 0.125 3 0.625 16.0 3JT K3 3.81 96.8 2.87 72.9 2.30 58.4 32
3KD (2) 6228 0.125 3 0.625 16.0 3JT K3 4.06 103.1 3.12 79.2 2.29 58.2 33
3PD (3) 6230 0.125 3 0.625 16.0 3JT K3 4.06 103.1 3.12 79.2 2.29 58.2 33
34-02 14442 .040 1 0.500 13.0 2JT K3 3.52 89.4 2.74 69.6 2.04 51.8 23
34-06 6295 .040 1 0.500 13.0 6JT K3 3.52 89.4 2.74 69.6 2.04 51.8 24
34-33 14445 .040 1 0.500 13.0 33JT K3 3.52 89.4 2.74 69.6 2.04 51.8 23
34-33C(4) 14451 .040 1 0.500 13.0 33JT K3C 3.71 94.2 2.93 74.4 2.00 50.8 26
36 6309 0.18 0 0.800 20.3 3JT K4 4.06 103.1 3.14 79.8 2.54 64.5 45
36KD (2) 14865 0.18 5 0.800 20.3 3JT K4 4.25 108.0 3.42 86.9 2.54 64.5 44
36PD (3) 14866 0.18 5 0.800 20.3 3JT K4 4.25 108.0 3.42 86.9 2.54 64.5 45

(2) Equipped with positive drive slot.

(3) Equipped with pin type positive drive.
(4) Equipped with locking collar - 1-1/16-20 thread, smooth sleeve.

MEDIUM DUTY MODEL

Fluted sleeve standard except Models 0 and 1 A, which are smooth and ground.
All Series 33 Plain Bearing Chucks are hammer capable.

Capacity Range Dimensions Wgt

Model Part Minimum Maximum Mount Key Closed Length Open Length Sleeve Dia. Each
No. No. in mm in mm Jacobs No. in mm in mm in mm oz
0 6200 .0135 0 0.156 4.0 0JT KO 1.404 36.8 1.100 27.9 0.850 21.6 2
1A 6206 .040 1 0.250 6.5 1JT K1 1.920 48.8 1.540 39.1 1.180 30.0 5
2A 6214 .040 1 0.375 10.0 2JT K2 2.810 71.4 2170 55.1 1.670 42.4 13
31-01 14697 .040 1 0.375 10.0 1JT K30 2.490 63.2 2.010 51.1 1.420 36.1 8
31-02 14698 .040 1 0.375 10.0 2JT K30 2.490 63.2 2.010 51.1 1.420 36.1 8
33 6279 0.08 2 0.500 13.0 33JT K32 3.210 81.5 2.520 64.0 1.792 45.5 16
3326A 6291 0.08 2 0.500 13.0 .6250 K32 3.540 89.9 2.850 72.4 1.792 45.5 17
33KD(3) 6281 0.08 2 0.500 13.0 33JT K32 3.460 87.9 2.770 70.4 1.792 45.5 17

(1) Model 0 has a minimum capacity of a No. 80 (.0135in/.344mm) drill.

(2) Equipped with positive drive slot.

9
keyed chucks - industrial INDUSTRIAL TOOL HOLDERS

PLAIN BEARING
CHUCKS (continued)

THREAD MOUNTED Heavy Duty Model

Fluted sleeve standard on all models.

Capacity Range Dimensions Wgt

Model Part Minimum Maximum Mount Key Closed Length Open Length Sleeve Dia. Each
No. No. in mm in mm Jacobs No. in mm in mm in mm oz
3B 5/8 6232 0.125 3 0.625 16.0 5/8-16 K3 3.81 97 2.84 72 2.29 58 32
7BA 3/8 6255 0 (1) 1 0.250 6.5 3/8-24 K7 2.23 57 1.74 44 1.33 34 7
32BA 1/2 8859 0 (1) 1 0.375 10.0 1/2-20 K32 3.05 77 2.31 59 1.79 45 14
35B 1/2 14723 0.156 4 0.625 16.0 1/2-20 K3 3.52 89 2.74 70 2.04 52 25
36B 3/4 6316 0.188 5 0.800 20.3 3/4-16 K4 4.12 105 3.20 81 2.54 65 46
36B 5/8 6314 0.188 5 0.800 20.3 5/8-16 K4 4.12 105 3.20 81 2.54 65 46
(1) At minimum capacity will hold a No. 60 (0.040in /1mm) drill.

Medium Duty Model

Fluted sleeve standard except Models OB 5/16, 1B 3/8, AND 41BA 3/8-S, which are smooth and ground.
41 Series Chucks replace 31 series Chucks.

Capacity Range Dimensions Wgt

Model Part Minimum Maximum Mount Key Closed Length Open Length Sleeve Dia. Each
No. No. in mm in mm Jacobs No. in mm in mm in mm oz
OB 5/16 6204 .0135 0 0.156 4.0 5/16-24 K0 1.53 39.0 1.17 30.00 0.85 22.0 2
1B 3/8 6208 .040 1 0.250 6.5 3/8-24 K1 1.95 50.0 1.57 40.00 1.12 28.0 5
2BA 3/8 6219 .040 1 0.375 10.0 3/8-24 K2 2.81 71.0 2.17 55.00 1.67 42.0 13
41BA 3/8 30728 .040 1 0.375 10.0 3/8-24 K30 2.50 63.5 2.05 52.07 1.43 36.3 8
41BA 3/8 - S 31138 .040 1 0.375 10.0 3/8-24 K30 2.50 63.5 2.05 52.07 1.43 36.3 8
41BA 1/2 31090 .040 1 0.375 10.0 1/2-20 K30 2.50 63.5 2.05 52.07 1.43 36.3 8
33BA 1/2 6287 0.08 2 0.500 13.0 1/2-20 K32 3.09 78.0 2.43 62.00 1.79 45.0 17
33BA 3/8 6283 0.08 2 0.500 13.0 3/8-24 K32 3.09 78.0 2.43 62.00 1.79 45.0 17
33BA 5/8 6289 0.08 2 0.500 13.0 5/8-16 K32 3.09 78.0 2.43 62.00 1.79 45.0 17
(1) At minimum capacity will hold a No. 60 (0.040in/mm) drill.
(2) Model OB 15/16 has a minimum capacity of a No. 80 (.0135in/.344mm) drill.
(S) Smooth Sleeve

Light Duty Model

Industrial Quality
Throughhardened jaws provide hard, durable gripping forces.

Capacity Range Dimensions Wgt

Model Part Minimum Maximum Mount Key Closed Length Open Length Sleeve Dia. Each
No. No. in mm in mm Thread No. in mm in mm in mm oz
22BA 3/8 14943 .063 1.6 0.375 10 3/8-24 KK 2.42 61.5 1.89 48.0 1.42 36.1 8
24BA 3/8 14946 .063 1.6 0.500 13 3/8-24 KK 3.00 76.2 2.30 58.4 1.72 43.6 13
26BA 1/2 14947 .063 1.6 0.500 13 1/2-20 KK 3.00 76.2 2.30 58.4 1.72 43.6 13

Replacement parts
Chuck Jaw and Nut Unit Sleeve
Series Model Part Model Part
No. No. No. No. No.
34 U34 7424 S34 5046
33 U33 7423 S33 5016 Sleeve
3 U3 7417 S3 4944 Jaw & Nut Unit*

36 U36 7425 S36 5066

10
 keyless chucks - industrial
INDUSTRIAL TOOL HOLDERS

INDUSTRIAL KEYLESS Precision design combines keyless operation

with the ultimate in drill chuck accuracy.
CHUCKS Jacobs Industrial Keyless Chucks are high precision devices specifically designed for high accuracy applications on either
conventional or CNC equipment. Tightened and released by hand,they permit more rapid tooling changes to increase
machining productivity. A self-tightening feature produces significantly higher gripping force to resist tool shank slippage.
Precision manufactured and tested to the most exacting quality standards, Jacobs Industrial Keyless Chucks can be counted
on for extremely high reliability and durability under the most demanding machining conditions.
FEATURES:
Precision tested and certified to .0016" T.l.R. maximum at half capacity.
Self-tightening feature automatically increases gripping force proportional
to increased torque to prevent tool shank slippage.
All components exposed to wear are completely hardened to maintain accuracy and extend chuck life.
Jacobs taper mount permits use on a wide range of high accuracy drill presses, jig borers,
milling machines and production drilling equipment

High Precision Model For general machining applications

taper mounted Capacity Range* Dimensions Wgt
Model Part Minimum Maximum Mount Closed Lgth (A) Open Lgth (A-1) Sleeve Dia. (D) Each
No. No. in mm in mm Jacobs in mm in mm in mm oz
JKP 03-J0 31126 0.000 0 0.118 3.0 0JT 1.87 47.5 1.73 44 0.96 24.5 4
JKP 03-J1 31127 0.000 0 0.118 3.0 1JT 1.87 47.5 1.73 44 0.96 24.5 4
JKP 03-5/16 31128 0.000 0 0.118 3.0 5/16-24 1.87 47.5 1.73 44 0.96 24.5 4
JKP 65-J1 31121 0.012 .300 0.255 6.5 1JT 2.76 70 2.44 62 1.28 32.5 11
JKP 80-J2S 9679 0.012 .300 0.315 8.0 2JS* 2.91 74 2.64 67 1.46 37.0 14
JKP 100-J2 9681 0.020 .500 0.394 10.0 2JT 3.50 89 3.19 81 1.61 41.0 22
JKP 100-J33 9680 0.020 .500 0.394 10.0 33JT 3.50 89 3.19 81 1.61 41.0 22
JKP 130-J2 9683 0.039 1.000 0.512 13.0 2JT 3.90 99 3.46 88 1.81 46.0 32
JKP 130-J33 9682 0.039 1.000 0.512 13.0 33JT 3.90 99 3.46 88 1.81 46.0 20
JKP 130-J6 9684 0.039 1.000 0.512 13.0 6JT 3.90 99 3.46 88 1.81 46.0 20
JKP 160-J6 9685 0.118 3.000 0.630 16.0 6JT 4.21 107 3.74 95 2.17 55.0 42
* S - Short Taper

JKP

High Torque/ Precision tested and certified to .0016" T.I.R. maximum at half capacity.
High Precision Model For use on CNC machining centers in drilling, boring, counter-boring and milling operations
requiring heavy penetration.
Furnished with milled wrench flats and spanner wrench to allow the application of supplementary gripping
torque. Light tightening increases gripping torque up to 3 times higher than hand tightening.
Resists tool loosening on high-speed machines with right hand rotation and instant spindle stop.

Capacity Range* Dimensions Wgt

Model Part Minimum Maximum Mount Closed Lgth (A) Open Lgth (A-1) Sleeve Dia. (D) Each
No. No. in mm in mm Jacobs in mm in mm in mm oz
JKT65-J1 31122 0.000 0 0.255 6.5 1JT 2.76 70 2.44 62 1.28 32.5 11
JKT80-J2S 30526 0.000 0 0.315 8.0 2JTS* 2.91 74 2.64 67 1.46 37.0 14
JKT 100-J33 30532 0.000 0 0.394 10.0 33JT 3.50 89 3.19 81 1.61 41.0 22
JKT 100-J2 30533 0.000 0 0.394 10.0 2JT 3.50 89 3.19 81 1.61 41.0 22
JKT 130-J2 30527 0.039 1 0.512 13.0 2JT 3.90 99 3.46 88 1.81 46.0 32
JKT 130-J33 30528 0.039 1 0.512 13.0 33JT 3.90 99 3.46 88 1.81 46.0 32
JKT 130-J6 30529 0.039 1 0.512 13.0 6JT 3.90 99 3.46 88 1.81 46.0 32
JKT16O-J6 30530 0.118 3 0.630 16.0 6JT 4.21 107 3.74 95 2.17 55.0 42

JKT
* S - Short Taper

11
Keyless chucks - industrial INDUSTRIAL TOOL HOLDERS

High Torque / FEATURES:

High Precision High precision keyless drill chuck arbor is integrated into the internal socket of the drill chuck.
keyless chucks with This integrated design makes it impossible for the arbor and the drill chuck to become accidently separated, providing
a unit of greater rigidity and precision. As a result of its compact design, accumulated run-out is reduced to a minimum.
integrated shank
Self-tightening feature automatically increases gripping force proportional to increased torque to prevent tool
shank slippage. For right-hand rotation applications only.
100% individually controlled to ensure not to exceed a maximum total integrated run-out of 0.04 mm.
Mounts available: Morse tapers, straight shanks and R-8.

Capacity Range Dimensions Weight

Model Part Minimum Maximum Mount Closed Length Open Length Sleeve Dia. Ea.

No. No. in mm in mm Jacobs in mm in mm in mm oz

JK 80-MT2 31406 0.000 0 0.315 8.0 MT2 2.83 72 2.56 65 1.50 38 28

JK 100-MT2 31407 0.000 0 0.394 10.0 MT2 3.23 82 2.87 73 1.69 43 36
JK 130-MT2 31408 0.039 1 0.512 13.0 MT2 3.62 92 3.15 80 1.89 48 42
JK 130-MT3 31409 0.039 1 0.512 13.0 MT3 3.62 92 3.15 80 1.89 48 47
JK 130-MT4 31410 0.039 1 0.512 13.0 MT4 3.54 90 3.23 82 1.89 48 56
JK 130-R8 31411 0.039 1 0.512 13.0 R8 3.54 90 3.23 82 1.89 48 56
JK 130-5-8" 31412 0.039 1 0.512 13.0 5/8 3.62 92 3.15 80 1.89 48 42
JK 160-MT2 31413 0.118 3 0.630 16.0 MT2 3.78 96 3.35 85 2.13 54 56
JK 160-MT3 31414 0.118 3 0.630 16.0 MT3 3.78 96 3.35 85 2.13 54 61
JK 160-MT4 31415 0.118 3 0.630 16.0 MT4 3.78 96 3.35 85 2.13 54 70
JK 160-R8 31416 0.118 3 0.630 16.0 R8 3.78 96 3.35 85 2.13 54 63

Medium Duty FEATURES:

Industrial Drill chucks for industrial use (medium duty), available with screw fittings for professional portable
drilling machines and with taper fittings for stationary drilling machines.
Keyless
Automatic fitting for efficient, fast change of tools.
Chucks
Self-tightening mechanism automatically increases the grip in proportion to the increase in torque during
the drilling and avoids the tool slipping in a clockwise rotation.
Fits tools of up to 20mm in diameter.
Machine fitting via DIN0238 of Jacobs tapers and UNF thread fittings.

Capacity Range Dimensions Weight

Model Part Minimum Maximum Mount Closed Length Open Length Sleeve Dia. Ea.

No. No. in mm in mm Jacobs in mm in mm in mm oz

JK 80 3/8 33356 0.000 0 0.315 8.0 3/8-24 2.68 68 2.40 61 1.34 34 11

JK 80 J1 33357 0.000 0 0.315 8.0 1JT 2.68 68 2.40 61 1.34 34 11
JK 80 J2 33358 0.000 0 0.315 8.0 2JT 2.68 68 2.40 61 1.34 34 11
JK 100 3/8 33359 0.000 0 0.394 10.0 3/8-24 3.15 80 2.87 73 1.54 39 16
JK 100 1/2 33360 0.000 0 0.394 10.0 1/2-20 3.15 80 2.87 73 1.54 39 16
JK 100 J2 33361 0.000 0 0.394 10.0 2JT 3.15 80 2.87 73 1.54 39 16
JK 130 3/8 33362 0.039 1 0.512 13.0 3/8-24 3.74 95 3.39 86 1.73 44 23
JK 130 1/2 33363 0.039 1 0.512 13.0 1/2-20 3.74 95 3.39 86 1.73 44 22
JK 130 J33 33364 0.039 1 0.512 13.0 33JT 3.74 95 3.39 86 1.73 44 22
JK 130 J2 33365 0.039 1 0.512 13.0 2JT 3.74 95 3.39 86 1.73 44 22
JK 130 J6 33366 0.039 1 0.512 13.0 6JT 3.74 95 3.39 86 1.73 44 23
JK 160 1/2 33367 0.118 3 0.630 16.0 1/2-20 4.53 115 4.02 102 2.01 51 39
JK 160 5/8 33368 0.118 3 0.630 16.0 5/8-16 4.53 115 4.02 102 2.01 51 37
JK 160 J33 33369 0.118 3 0.630 16.0 33JT 4.53 115 4.02 102 2.01 51 37
JK 160 J6 33370 0.118 3 0.630 16.0 6JT 4.53 115 4.02 102 2.01 51 38
JK 200 J3 33371 0.197 5 0.787 20.0 3JT 5.51 140 4.02 102 2.52 64 77

12
 Keyless chucks - industrial
INDUSTRIAL TOOL HOLDERS

INDUSTRIAL Designed to maximize drill chuck rigidity and precision on

KEYLESS CHUCKS machining centers with automatic tool changers.

WITH V-FLANGE FEATURES:

Choice of CAT-V flange or BT flange with Jacobs High Torque/High Precision Keyless Chucks.
MOUNTS Single taper connection eliminates intermediate arbors to assure high tool rigidity and drilling
Compact design, as compared to conventional tool setups, increases machining flexibility.
Precision tested and individually certified for run-out (mounting taper to chuck capacity).

cat-v flange Capacity Range Dimensions Wgt

Model Part Minimum Maximum Taper Closed Lgth (A) Open Lgth (A-1) Sleeve Dia. (D) Each
No. No. in mm in mm Size in mm in mm in mm oz
JKC 80-30 30551 0.000 0 0.315 8 30 4.21 107 3.98 101 1.46 37 30
JKC 80-40 30552 0.000 0 0.315 8 40 3.46 88 3.23 82 1.46 37 45
JKC 130-40 30553 0.039 1 0.512 13 40 4.96 126 4.53 115 1.89 48 66
JKC130-45 30554 0.039 1 0.512 13 45 5.16 131 4.72 120 2.17 55 79
JKC 130-50 30555 0.039 1 0.512 13 50 4.21 107 3.78 96 1.89 48 87
JKC160-40 30556 0.118 3 0.630 16 40 4.21 107 3.78 96 1.89 48 129
JKC160-50 30557 0.118 3 0.630 16 50 4.13 105 3.70 94 2.17 55 135

Meets ANSI/ASME Standard B5.501 994.

Precision tested and certified to .0016" T.l.R. maximum at half capacity
(mounting taper to chuck capacity).

JKC

BT Flange Capacity Range Dimensions Wgt

Model Part Minimum Maximum Taper Closed Lgth (A) Open Lgth (A-1) Sleeve Dia. (D) Each
No. No. in mm in mm Size in mm in mm in mm oz
JKB 80-30 30536 0.000 0 0.315 8 30 2.87 73 3.11 79 1.46 37 23
JKB 80-40 30537 0.000 0 0.315 8 40 3.14 80 2.84 72 1.46 37 44
JKB 80-40L* 30538 0.000 0 0.315 8 40 4.25 108 4.49 114 1.46 37 53
JKB 130-40 30539 0.039 1 0.512 13 40 3.39 86 3.82 97 1.89 48 54
JKB 130-40L* 30540 0.039 1 0.512 13 40 5.35 136 5.79 147 1.89 48 81
JKB 160-40 30541 0.118 3 0.630 16 40 4.13 105 4.57 116 2.17 55 68
JKB 130-45 30542 0.039 1 0.512 13 45 3.62 92 4.06 103 1.89 48 85
JKB 130-50 30543 0.039 1 0.512 13 50 3.82 97 4.25 108 1.89 48 146
JKB 160-50 30544 0.118 3 0.630 16 50 3.74 95 4.17 106 2.17 55 151
JKB 160-50L* 30545 0.118 3 0.630 16 50 5.71 145 6.14 156 2.17 55 185
* "L" indicates additional length.

Meets JMBTA Standard MAS 4031982.

Precision tested and certified to .0016" T.I.R. maximum at half capacity
(mounting taper to chuck capacity).
JKB Internal Thread M16 x 2.0.

WARNING -
Toolholder retention studs are not necessarily interchangeable across various types of toolholders or machine tool
models. Use of metric threaded studs in inch threaded holders or vice versa is dangerous. Failure to use the proper
thread or stud configuration can cause the toolholder to come free of the spindle resulting in serious personal injury.

13
TOOLHOLDER / ADAPTERS INDUSTRIAL TOOL HOLDERS

TOOLHOLDER/ For use on machining centers with automatic

ADAPTERS tool changers. Choice of CAT-V flange or BT
flange to Jacobs taper arbor.

cat-v flange to Meets ANSl/ASME Standard B5.501994. 5/811 Internal Thread.

jacobs TAPER ARBOR Dimensions Wgt
Model Part Taper Mount A B C Each
No. No. Size Jacobs in mm in mm in mm oz
JCJ JCJ 30-J2 30566 30 J2 2.41 61.2 1.38 35.1 1.25 31.8 18
JCJ 30-J3 30567 30 J3 2.75 69.9 1.38 35.1 1.25 31.8 18
JCJ 30.J33 30568 30 J33 2.53 64.3 1.38 35.1 1.25 31.8 18
JCJ 30-J6 30569 30 J6 2.53 64.3 1.38 35.1 1.25 31.8 18
JCJ 40-J2 30570 40 J2 2.41 61.2 1.38 35.1 1.75 44.5 37
JCJ 40-J3 30571 40 J3 2.75 69.9 138 35.1 1.75 44.5 37
JCJ 40-J33 30572 40 J33 2.53 64.3 1.38 35.1 1.75 44.5 37
JCJ 40-J4 30573 40 J4 3.19 81.0 1.38 35.1 1.75 44.5 37
JCJ 40-J6 30574 40 J6 2.53 64.3 1.38 35.1 1.75 44.5 37
JCJ 45-J3 30575 45 J3 2.75 69.9 138 35.1 2.25 57.2 70
JCJ 45-J33 30576 45 J33 2.53 64.3 1.38 35.1 2.25 57.2 70
JCJ 45-J4 30577 45 J4 3.19 81.0 1.38 35.1 2.25 57.2 70
JCJ 45oJ5 30578 45 J5 3.41 86.6 1.38 35.1 2.25 57.2 70
JCJ 50-J3 30579 50 J3 2.75 69.9 1.38 35.1 2.75 69.9 109
JCJ 50-J4 30580 50 J4 3.19 81.0 1.38 35.1 2.75 69.9 109
JCJ 50-J5 30581 50 J5 3.41 86.6 1.38 35.1 2.75 69.9 109

BT flange to
jacobs TAPER ARBOR
Meets JMBTA Standard MAS 4031982. 5/811 Internal Thread.
Dimensions Wgt
Model Part Taper Mount A B C Each
No. No. Size Jacobs in mm in mm in mm oz
JBT 30-J2 30582 30 J2 2.27 57.7 1.36 34.5 1.25 31.8 18
JBT JBT 30-J3 30583 30 J3 2.61 66.3 1.36 34.5 1.25 31.8 18
JBT 30-J33 30584 30 J33 2.39 60.7 1.36 34.5 1.25 31.8 18
JBT 30-J6 30585 30 J6 2.39 60.7 1.36 34.5 1.25 31.8 18
JBT 40-J2 30586 40 J2 2.09 53.1 1.18 30.0 2.48 63.0 37
JBT 40-J3 30587 40 J3 2.43 61.7 1.18 30.0 2.48 63.0 37
JBT 40-J33 30588 40 J33 2.21 56.1 1.18 30.0 2.48 63.0 37
JBT 40-J4 30589 40 J4 2.87 72.9 1.18 30.0 2.48 63.0 37
JBT 40-J6 30590 40 J6 2.21 56.1 1.18 30.0 2.48 63.0 37
JBT 45-J3 30591 45 J3 2.67 67.8 1.42 36.1 3.34 84.8 78
JBT 45-J33 30592 45 J33 2.45 62.2 1.42 36.1 3.34 84.8 78
JBT 45-J4 30593 45 J4 3.11 79.0 1.42 36.1 3.34 84.8 78
JBT 45-J5 30524 45 J5 3.33 84.6 1.42 36.1 3.35 85.0 78
JBT 50-J3 30595 50 J3 2.87 72.9 1.62 41.1 3.94 100.1 131
JBT 50-J4 30596 50 J4 3.31 84.1 1.62 41.1 3.94 100.1 131
JBT5O-J5 30597 50 J5 3.53 89.7 1.62 41.1 3.94 100.1 131

WARNING -
-Toolholder retention studs are not necessarily interchangeable across various types of toolholders or machine tool
models. Use of metric threaded studs in inch threaded holders or vice versa is dangerous. Failure to use the proper thread
or stud configuration can cause the toolholder to come free of the spindle resulting in serious personal injury.

14
INDUSTRIAL TOOL HOLDERS

tap & die grinder chucks

Simplify tap changing and provide
unmatched accuracy.
tap
FEATURES:
chucks Designed for use with the versatile Jacobs Rubber-Flex Collet which accepts and precisely centers
both decimal and metric shank diameters.*
Simple operation one quarter turn of chuck screw allows nut to disengage back jaws. Tap shank sighting
hole presents full view of tap square during changeovers.
Each chuck, with one interchangeable Rubber--Flex Collet, handles a wide range of tap sizes to speed tap size changes.
Positive-drive chuck jaws always locate square of tap shank to ensure superior performance.
Available with choice of Jacobs, round or square hole mounts. *Refer to Rubber-Flex Collet information.
Overall Round Shank
Length@ Maximum Capacity Available Wgt
Model Part Tap Capacity Mount Max Cap Diameter Minimum Maximum Rubber-Flex Ea.
No. No. in mm Style in mm in mm in mm in mm Collets oz
41-01 14121 #0-1/4 1.00-6.35 1JT* 2.00 50.7 0.84 21 0.09 2 0.25 6 J116,J117 2
42-01 14123 #10-5/16 4.83-7.94 1JT* 2.60 65.0 1.06 27 0.09 2 0.38 10 J420,J421, J422,J423 6
42-02 14125 #10-5/16 4.83-7.94 2 short JT* 2.50 64.2 1.06 27 0.09 2 0.38 10 J420,J421.J422, J423 5
42-24 14129 #10-5/16 4.83-7.94 .3675 Dia. 2.60 66.0 1.06 27 0.09 2 0.38 10 J420,J421,J422, J423 6
42-J8 14127 #0-1/4 1.00-6.35 .375 Sq. Hole 2.40 61.2 1.06 27 0.09 2 0.38 10 J420,J421, J422.J423 6
44-02 14131 5/16-1/2 7.94-15.88 2JT* 3.12 79 1.47 37 0.11 3 0.50 13 J440,J441,J443 12
44-J9 14135 #10-1/2 4.83-12.70 .500 Sq. Hole 3.12 79 1.47 37 0.11 3 0.50 13 J440.J441.J443 12

*Jacobs Taper
Rubber-Rex CoIlets are not included. Must be ordered separately.

REPLACEMENT PARTS
Model Rubber-Flex Back Nut Body
No. Nut Collet Jaws Wrench Wrench
Nut Back Jaws 41-01 12792 J116, J117 6656 1848 1849
42-01 12793 J420.J421.J422.J423 6654 1850 1851
42-02 12793 J420.J421,J422,J423 6654 1850 1851
42-J8 12793 J420,J421,J422.J423 6654 1850 None
42-24 12793 J420.J421J422,J423 6654 1850 1851
Rubber-Flex Collets

Compact tap chuck designed for use with Rubber-Flex Collets

die grinder holds mounted grinding burrs and rotary files on pneumatic and
chucks electric die grinders.
FEATURES:
Compact design facilitates use for a wide range of applications.
Integral seal protects collet components from abrasives and swarf.
Rubber-Flex Collets (see Rubber-Flex information) furnished separately for tools with collet seating cones built into spindles.

Capacity Range* Dimensions Wgt

Model Part Minimum Maximum Mount Closed Lgth Open Lgth Sleeve Dia. Each
No. No. in mm in mm Jacobs in mm in mm in mm oz
100-61 9756 0.09 2.3 0.25 6.4 3/8-24 1.77 45.0 1.88 47.8 0.75 19.1 1.5

NUT FOR DIE GRINDER CHUCK*

Model Part
No. No.
N100 12791
*Nut for Die Grinder Chuck, Model No. 100-61.

15
rubber-flex collets INDUSTRIAL TOOL HOLDERS

rubber-flex Jacobs Rubber-Flex collets outperform conventional split-steel
collets collets in gripping power, accuracy and durability.

Unique in design and operation, the Jacobs Rubber-Flex Collet can generate two to three times
the gripping power of a conventional split-steel collet. Gripping force is uniform and parallel
throughout the collet contact length and not concentrated at the nose or back as is frequently the
case with split-steel collets (see illustration below). Construction is of durable synthetic rubber
compound permanently bonded to hardened steel jaw insert surfaces and through-holes. It is
unaffected by heat, coolants and cutting compounds and retains its flexibility over a long service
life as compared to spring tempered metal designs.

Rubber-Flex Collets vs.

Conventional Collets

Oversized Bar Undersized Bar Rubber-Flex Collet

Conventional split-steel collets provide maximum gripping efficiency only at actual bored or nominal capacity They lose
parallelism when chucking bars even a few thousandths over or under this capacity. This significantly reduces gripping
strength and accuracy. Rubber-Flex Collets exert uniform gripping pressure throughout the collet contact length
(within individual collet capacity ranges) regardless of bar tolerance deviations.

FEATURES:
Parallel jaw insert surfaces exert uniform, accurate gripping force up to three times greater than can
be achieved with split-steel collets.
Each collet accepts and precisely centers a wide range of both decimal or metric diameters
(within individual capacity ranges) to speed setups and increase machining productivity
Durable one-piece construction. Synthetic rubber retains flexibility and resists deterioration
from heat, coolants and cutting compounds.
Steel jaw inserts precision ground (after molding process) to assure maximum gripping accuracy
(parallelism). Hardened for greater wear resistance than split steel collets.
Each collet bore is held concentric to the O.D. tapers, both front and back, to minimize T.J.R.
Automatically seals tool O.D. to permit coolant flow through tool reducing wear.
Seals collets and machine spindles to protect from abrasive particles and swarf.

tap chuck collets

Capacity Range (A) Contact Cone Outside Number Wgt

Model Part Minimum Maximum Length (B) Angle (C) Diameter (D) of Each
No. No. in mm in mm in mm deg. in mm inserts oz
J116 9757 0.100 2.4 0.177 4.5 0.468 11.9 26 0.590 15.1 6 0.10
J117 9758 0.177 4.5 0.256 6.5 0.468 11.9 26 0.590 15.1 8 0.10
J420 9747 0.176 4.5 0.320 8.1 0.500 12.7 40 0.941 23.9 6 0.20
J421 9748 0.139 3.5 0.257 6.5 0.500 12.7 40 0.941 23.9 6 0.20
J422 9751 0.253 6.4 0.383 9.7 0.500 12.7 40 0.941 23.9 6 0.30
J423 9817 0.090 2.3 0.180 4.6 0.500 12.7 40 0.860 21.8 4 0.30
J440 9749 0.280 7.1 0.500 12.7 0.630 16.0 45 1.296 32.9 6 0.30
J441 9750 0.176 4.5 0.383 9.7 0.630 16.0 45 1.296 32.9 6 0.30
J443 9867 0.110 2.8 0.280 7.1 0.620 15.7 45 1.180 30.0 4 0.30

16
INDUSTRIAL TOOL HOLDERS

rubber-flex collets

rubber-flex
collets (continued)

die grinder collets

Capacity Range (A) Contact Cone Outside Number Wgt
Model Part Minimum Maximum Length (B) Angle (C) Diameter (D) of Each
No. No. in mm in mm in mm deg. in mm inserts oz
J116 9757 0.094 2.4 0.177 4.5 0.468 11.9 26 0.59 15.1 6 0.1
J117 9758 0.177 4.5 0.256 6.5 0.468 11.9 26 0.59 15.1 8 0.1

lathe Chuck collets Collets J910, J911 and J912 have a contact length of .90 in. (23mm).
All other lathe chuck collets have full length contact.

Capacity Range (A) Contact Cone Outside Clearance Number Wgt

Model Part Minimum Maximum Length (B) Angle (C) Diameter (D) Diameter (E) of Each
No. No. in mm in mm in mm deg. in mm in mm inserts oz
J910 9555 0 060 1.5 0.125 3.2 1.74 44.5 26 2.25 57 0.6 15.2 4 0.53
J911 9556 0.125 3.2 0.250 6.4 1.74 44.5 26 2.25 57 0.6 15.2 6 0.53
J912 9557 0.250 6.4 0.375 9.5 1.74 44.5 26 2.25 57 0.6 15.2 6 0.47
J913 9558 0.375 9.5 0.500 12.7 1 74 44.5 26 2.25 57 8 0.47
J914 9559 0.500 12.7 0.625 15.9 1.74 44.5 26 2.25 57 10 0.47
J915 9560 0.625 15.9 0.750 19.1 1.74 44.5 26 2.25 57 10 0.47
J916 9561 0.750 19.1 0.875 22.2 1.74 44.5 26 2.25 57 12 0.47
J917 9562 0.875 22.2 1.000 27.9 1.74 44.5 26 2.25 57 16 0.55
J918 9563 1.000 25.4 1.125 28.6 1.74 44.5 26 2.25 57 20 0.52
J919 9564 1.125 28.6 1.250 31.8 1.74 44.5 26 2.25 57 24 0.43
J920 9565 1.250 31.8 1.375 34.9 1.74 44.5 26 2.25 57 24 0.40
J921* 9567 1.375 34.9 1.500 38.1 1.74 44.5 26 2.25 57 24 0.27
Requires special 1-1/2" nose.

17
 INDUSTRIAL TOOL HOLDERS

Precision CNC machined and ground to ensure high accuracy

ARBORS and close-tolerance fit.
ARBORS

FEATURES:
Precision machined and ground to master gages for maximum performance with Jacobs drill and tap chucks.
Adapt Jacobs taper to: Morse tapers, straight shanks, threaded shanks and Bridgeport tapers.
Each chuck, with one interchangeable Rubber--Flex Collet, handles a wide range of tap sizes to speed tap size changes.
Ideal for use with custom tool and work holder designs and for specialized machining applications.

morse taper
jacobs TAPER ARBOR
AO Part Overall Length Weight Ea.
No. No. Description in mm oz
AO101 7299 1 Morse X 1JT 3.38 85.7 2
AO102 7300 1 Morse x 2 JT 3.59 91.3 2
AO106 7303 1 Morse x 6JT 3.72 94.5 4
AO133 7304 1 Morse x 33JT 3.72 94.5 3
AO201 7306 2 Morse x 1JT 3.94 100.0 4
AO202 7307 2 Morse x 2JT 4.16 105.6 5
AO203 7308 2 Morse x 3JT 4.50 114.3 7
AO204 7309 2 Morse x 4JT 4.94 125.4 12
AO206 7311 2 Morse x 6JT 4.28 108.7 5
AO233 7312 2 Morse x 33JT 4.28 108.7 5
AO301 7313 3 Morse x 1JT 4.69 119.1 10
AO302 7314 3 Morse x 2JT 4.94 125.4 10
AO303 7315 3 Morse x 3JT 5.27 133.8 12
AO304 7316 3 Morse x 4JT 5.70 144.9 17
AO305 7317 3 Morse x 5JT 5.94 150.8 23
AO306 7318 3 Morse x 6JT 5.06 128.6 11
AO333 7319 3 Morse x 33JT 5.06 128.6 11
AO402 7320 4 Morse x 2JT 5.91 150.0 21
AO403 7321 4 Morse x 3JT 6.25 158.8 23
AO404 7322 4 Morse x 4JT 6.69 169.9 30
AO405 7323 4 Morse x 5JT 6.91 175.4 35
AO406 7324 4 Morse x 6JT 6.03 153.2 21
AO433 7325 4 Morse x 33JT 6.06 154.0 22
AO503 7327 5 Morse x 3JT 7.50 190.5 53
AO504 7328 5 Morse x 4JT 7.94 201.6 58
AO505 7329 5 Morse x 5JT 8.16 207.2 65

STRAIGHT SHANK TO
jacobs TAPER
Dimensions Weight
AO Part Straight Shanks (L-1) Overall Length (L) Ea.
No. No. Description in mm in mm oz
A4000 7348 1/2" x 0JT 2.500 63.5 3.094 78.6 2
A4001 7349 1/2" x 1JT 2.500 63.5 3.312 84.1 2
A4002 7350 1/2" x 2JT 2.500 63.5 3.531 89.7 2
A4003 7351 1/2" x 3JT 2.500 63.5 3.875 98.4 4
A4006 7353 1/2" x 6JT 2.500 63.5 3.656 92.9 4
A4033 7354 1/2" x 33JT 2.500 63.5 3.656 92.9 4
A4101 7355 5/8" x 1JT 2.500 63.5 3.312 84.1 4
A4102 7356 5/8" x 2JT 2.500 63.5 3.531 89.7 5
A4103 7357 5/8" x 3JT 2.500 63.5 3.875 98.4 6
A4106 7359 5/8" x 6JT 2.500 63.5 3.656 92.9 5
A4133 7360 5/8" x 33JT 2.500 63.5 3.656 92.9 5
A4202 7361 3/4" x 2JT 3.000 76.2 4.031 102.4 6
A4203 7362 3/4" x 3JT 3.000 76.2 4.375 111.1 7
A4206 7364 3/4" x 6JT 3.000 76.2 4.156 105.6 6
A4233 7365 3/4" x 33JT 3.000 76.2 4.156 105.6 6
A4303 7367 1" x 3JT 3.000 76.2 4.375 111.1 11
A4306 7368 1" x 6JT 3.000 76.2 4.156 105.6 10

18
INDUSTRIAL TOOL HOLDERS

arbors

ARBORS
Threaded shank to Dimensions Weight

Morse taper AO Part Overall Length (L) Threaded Extension Ea.

No. No. Description in mm in mm oz
A0261 7345 2 Morse 3/8" - 24 3.69 93.7 0.56 14.3 4
A0264 7346 2 Morse 1/2" - 20 4.06 103.2 0.56 14.3 5
A0268 7347 2 Morse 5/8" - 16 4.19 106.4 0.69 17.5 5

Bridgeport taper to
jacobs taper
Dimensions
Overall Length (L) Length (C) Diameter (D) Weight
AO Part Mount Minimum Maximum Minimum Maximum Minimum Maximum Ea.
No. No. Jacobs in mm in mm in mm in mm in mm in mm oz
AO802 7339 2JT 5.18 131.6 5.20 132.2 0.91 23.0 0.92 23.4 0.49 12.4 0.56 14.2 16
AO803 7340 3JT 5.53 140.4 5.55 140.9 1.25 31.8 1.27 32.1 0.75 18.9 0.81 20.6 17
AO804 7341 4JT 5.97 151.6 5.98 151.8 1.69 42.9 1.70 43.2 1.04 26.3 1.12 28.6 17
AO806 7342 6JT 5.31 134.8 5.33 135.4 1.03 26.2 1.05 26.6 0.62 15.8 0.68 17.2 16
AO833 7343 33JT 5.31 134.8 5.33 135.4 1.03 26.2 1.05 26.6 0.56 14.2 0.62 15.9 16

HOW TO ORDER ARBORS

When ordering arbors
Either of the following is correct:
1. Show the style and size of the mounting shank and the model number of the Jacobs chuck to which the arbor will be fitted.
Example: A #2 Morse taper shank arbor for a #34 Jacobs chuck
2. Show the style and size of the mounting shank plus the actual Jacobs taper desired.
Example: A #2 Morse taper shank with a #3 Jacobs taper.

Motor shaft Adapts No. 2 Jacobs taper to 1/2

adapter diameter motor shaft.

Model Part Motor Shaft Jacobs

No. No. Size Taper
AD2502 7374 1/2Dia. 2JT

19
sleeves, sockets & drives INDUSTRIAL TOOL HOLDERS

DRILL SLEEVES AND Archer precision machine tool accessories for

maximum flexibility in tooling setups.
EXTENSION SOCKETS
drill sleeves- Archer Series 600 and 700
morse taper FEATURES:
Adapt smaller Morse taper shank tools to larger machine spindles.
Oil toughened and externally precision ground with hardened tang.
Outside Morse taper sizes are 1 through 6; inside Morse taper sizes are 0 through 5.
Series 700 drill sleeves are through-hardened and precision ground both internally and externally.

Series 600 Series 700 Dimensions Weight

Model Part Model Part Morse Taper No. Overall Length (L) Ea
No No No No Outside Inside in mm oz
610 30421 710 30432 1 0 3.125 79 1
621 30422 2 1 3.62 92 2
632 30423 732 30434 3 2 4.38 111 5
631 30424 3 1 3.88 98 6
643 30425 743 30436 4 3 5.50 140 13
642 30426 742 30437 4 2 4.88 124 14
641 30427 4 1 4.88 124 17
651 30638 751 30762 5 1 6.12 156 47
654 30428 754 30439 5 4 6.69 170 35
653 30429 753 30440 5 3 6.12 156 41
652 30430 752 30441 5 2 6.12 156 46
664 30639 764 30822 6 4 8.56 217 88
665 30431 6 5 8.56 217 90

extension sockets - Archer Series 800

morse taper FEATURES:
Extend tool lengths and application distances while adapting for increases or decreases in applied tool Morse taper sizes.
Externally precision ground with hardened tang.
Outside and inside Morse taper sizes are 1 through 5.

Series 800 Dimensions Weight

Model Part Morse Taper No. Overall Length (L) Length (A) Diameter (D) Ea
No No Outside Inside in mm in mm in mm oz
811 30443 1 1 5.71 145 2.99 76 0.79 20 5
812 30444 1 2 6.30 160 3.58 91 1.18 30 14
821 30445 2 1 6.30 160 2.99 76 0.80 20 9
822 30446 2 2 6.89 175 3.58 91 1.18 30 16
823 30447 2 3 7.72 196 4.41 112 1.42 36 24
831 30448 3 1 6.89 175 2.99 76 0.79 20 14
832 30449 3 2 7.64 194 3.58 91 1.18 30 23
833 30450 3 3 8.46 215 4.41 112 1.42 36 30
834 30451 3 4 9.45 240 5.39 137 1.89 48 55
842 30640 4 2 8.46 215 3.58 91 1.18 30 41
843 30452 4 3 9.45 240 4.41 112 1.42 36 42
844 30453 4 4 10.43 265 5.39 137 1.89 48 65
845 30454 4 5 11.81 300 6.77 172 2.48 63 76
853 30641 5 3 10.35 263 4.41 112 1 42 36 100
854 30455 5 4 11.81 300 5.39 137 1.89 48 102
855 30456 5 5 13.19 335 6.77 172 2.48 63 76

20
INDUSTRIAL TOOL HOLDERS

sleeves, sockets & drifts

turret sockets and
ejecting drifts

turret sockets - Archer Series 500

morse taper FEATURES:
Permit the use of Morse taper shank tools in straight-hole mounting applications.
Through-hardened and precision ground internally and externally.
Inside Morse taper sizes 1 through 4.

Morse Dimensions Weight

Model Part Taper No. Length Diameter Ea
No No Inside in mm in mm oz
531 30471 1 3.50 88.9 0.75 19.0 5
542 30474 2 4.00 101.6 1.00 25.4 12
552 30475 2 4.00 101.6 1.25 31.8 16
562 30476 2 4.00 101.6 1.50 38.1 44
553 30478 3 4.75 120.7 1.25 31.8 32
563 30479 3 4.75 120.7 1.50 38.1 35
573 30480 3 4.75 120.7 1.75 44.5 39
564 30482 4 6.00 152.4 1.50 38.1 34
584 30483 4 6.00 152.4 2.00 50.8 39

ejecting Hardened and tempered.

drifts Eject Morse taper sizes 0 through 6 from sleeves, sockets and machine spindles.

Model Part Weight Ea

No No For Ejection Of: oz

900 30484 No. 0 Morse Taper 1

902 30485 Nos. 1 & 2 Morse Tapers 3
903 30486 Nos. 3 & 4 Morse Tapers 6
904 30487 Nos. 4 & 5 Morse tapers 12
906 30488 No.6 Morse Tapers 21
914 30489 Nos. 4 & 5 10

21
CENTERS - ROTATING (LIVE) INDUSTRIAL TOOL HOLDERS

rotating (live) Jacobs rotating centers are precision engineered and

centers manufactured to ensure high work holding accuracy in
either conventional or CNC applications.
FEATURES:
Compact design maximizes tool clearance and machining flexibility for confined area work.
Body and center hardened and ground for high durability and extended life.
Standard or extended nose configurations offered on centers with either standard or reduced body diameters.
60 Standard Angle of Center.

standard nose with Designed for wide range of general turning work.
standard body Morse Dimensions Max Weight
diameter Model Part Taper D d L L-1 L-2 Speed Ea
No No No in mm in mm in mm in mm in mm rpm oz
JLS-M200 30502 2 1.77 45 0.79 20 5.43 138 0.98 25 1.69 43 5000 14.4
JLS-M300 30503 3 2.36 60 0.94 24 6.81 173 1.38 35 1.97 50 4300 30.4
JLS-M400 30504 4 2.99 76 1.26 32 8.27 210 1.65 35 2.28 58 3200 52.8
JLS-M500 30505 5 3.78 96 1.65 42 10.24 260 1.89 48 2.83 72 2600 139.2

standard nose with Provides additional clearance for confined area machining applications.
reduced body Morse Dimensions Max Weight
diameter Model Part Taper D d L L-1 L-2 Speed Ea
No No No in mm in mm in mm in mm in mm rpm oz
JLR-M200 30509 2 1.26 32 0.59 15 4.96 126 0.71 18 1.46 37 6000 11.2
JLR-M300 30510 3 1.34 34 0.59 15 5.67 144 0.71 18 1.46 37 6000 16.0
JLR-M400 30511 4 1.65 42 0.79 20 7.05 179 0.98 25 1.65 42 6000 35.2
JLR-M500 30512 5 2.28 58 1.18 30 9.25 235 1.50 38 2.40 61 4000 91.2

extended nose with Increases tool clearance and operator visibility for work on small parts or machining
close to work piece ends.
standard body
Morse Dimensions Max Weight
diameter Model Part Taper D d d-1 L L-1 L-2 Speed Ea
No No No in mm in mm in* mm in mm in mm in mm rpm oz
JLE-M300 30506 3 2.36 60 0.94 24 0.39 10 7.24 184 1.81 46 1.97 50 4300 41.6
JLE-M400 30507 4 2.99 76 1.26 32 0.47 12 8.98 228 2.36 60 2.28 58 3200 84.8
JLE-M500 30508 5 3.78 96 1.65 42 0.63 16 11.14 283 2.80 71 2.83 72 2600 176.0

22
 centers - stationary (dead)
INDUSTRIAL TOOL HOLDERS

stationary (dead) Full line of tungsten carbide tipped lathe centers

centers with Morse taper and 60 angle joints.
FEATURES:
Full tungsten carbide point increases wear resistance for turning or grinding applications and provides longer regrind life.
Integral strength of onepiece body resists deflection for positive work holding.
Precision ground points provide higher finished part accuracy.

short type Model Part Morse Overall Length Weight Ea.

without flats No. No. Taper No. in mm oz
TS1 30490 1 2.758 70 2.0
TS2 30491 2 3.347 85 6.5
TS3 30492 3 4.331 110 10.0
TS4 30493 4 5.512 140 23.0
TS5 30494 5 7.087 180 59.0

long type Model Part Morse Overall Length Weight Ea.

with flats No. No. Taper No. in mm oz
TL2 30496 2 3.937 100 7.25
TL3 30497 3 4.921 125 14.00
TL4 30498 4 5.299 135 30.00

long type with Model Part Morse Overall Length Weight Ea.
half 60 point No. No. Taper No. in mm oz
TL3 half 30501 3 4.921 125 10.0

23
24
Keyless Chucks
Keyed Chucks
Special Purpose Chucks

portable tool
Keys and Accessories

chucks and
accessories
25
 PORTABLE TOOL CHUCKS AND ACCESSORIES

HAND-TITE KEYLESS Patented keyless design, with 10mm and 13mm capacities,
DRILL CHUCKS produces greater bit gripping force than conventional
keyed chucks.
Hand-Tite keyless operation increases operator productivity and convenience by speeding bit changeovers and
eliminating downtime caused by loss of chuck keys. Ergonomic design increases hand tightening efficiency and
user comfort.

Components are constructed from high performance materials designed to provide durable, long lasting performance.

FEATURES:
Split Bite Jaw: Increases grip over standard bite chucks by providing more contact with the bit.
Superior Gripping Force: Provides high mechanical advantage to convert hand tightening torque into superior bit gripping force.
Hammerlock: Positive locking mechanism prevents loosening in hammer and other high vibration applications.
Anti-lock Nut: Prevents chuck from locking open.
Versatility: Models available to fit all 10mm (3/8) and 13mm (1/2) variable speed corded and cordless portable drills.
Precision Operation: Meet or exceed stringent DIN runout and dimensional specifications.
Ergonomic Design: Material and surface finish combinations result in increased comfort and performance.
keyless chuck - portable tools

Rugged Construction: Constructed of high performance material to maximize durability and performance.

hand-tite keyless Model/ Capacity Range Dimensions Boss/Body Weight

drill chucks Part Minimum Maximum Mount Overall Length Sleeve Dia. Clearance Ea.
No. Features in mm in mm Thread in mm in mm in mm oz

10 mm Capacity (3/8")

30354 Hard Nose, 0.040 1.00 0.375 10 3/8-24 2.00 54.60 1.67 42.70 0.126 3.00 6.5
Black Finish

13 mm Capacity (1/2")

31038 Hard Nose, 0.062 2.00 0.500 13 1/2-20 2.90 73.70 1.68 42.70 0.082 2.08 12.0
Black Finish

31037 Hard Nose, 0.062 2.00 0.500 13 3/8-24 2.90 73.70 1.68 42.70 0.082 2.08 12.0
Black Finish

26
PORTABLE TOOL CHUCKS AND ACCESSORIES

HAND-TITE KEYLESS Unique, patented Hammerlock mechanism expands
haMMer drill chucks Hand-Tite keyless chuck performance and convenience
to include 13mm AC or cordless hammer drills.
Hammer-capable Hand-Tite chucks are designed specifically for use on professional hammer drills. They are
equipped with the unique Hammerlock mechanism.

This patented device automatically engages as the chuck is tightened on the drill bit. It then maintains full
gripping pressure to prevent drill bit slippage during hammer drilling. Unlike rigid locking systems which cannot
compensate for the effects of impact and vibration, the Hammerlock system absorbs and compensates for these
forces. The result is reliable and consistent performance under severe operating conditions.

FEATURES:
Hammerlock Mechanism. Automatically engages as the chuck is tightened and maintains full gripping pressure to
prevent bit slippage during hammer drilling.
Split-Bite Jaw. Increases grip over standard bite chucks by providing more contact with the bit.
Anti-lock Nut. Prevents the chuck from locking open.

keyless chuck - portable tools

Precision Operation. Meets or exceeds stringent DIN run-out and dimensional specifications.
Ergonomic Design. Non-slip gripping surfaces enhance hand tightening capability and increase user comfort.
Rugged Construction. Provides extended service under the most demanding concrete hole drilling conditions.
Performance. Tested and approved on a wide range of AC powered and cordless hammer drills.

hand-tite hammer Model/ Capacity Range Dimensions Boss/Body Weight

drill chucks Part Minimum Maximum Mount Overall Length Sleeve Dia. Clearance Ea.
No. Features in mm in mm Thread in mm in mm in mm oz

13 mm Capacity (1/2")

31237 Hammerlock 0.062 2 0.5 13 1/2-20 2.61 66.2 1.68 42.7 0.079 2 12.0
Mechanism,
Black Finish

27
 PORTABLE TOOL CHUCKS AND ACCESSORIES

jacobs
Industrial quality drill chuck gives precision performance for
professional the tradesman or serious home craftsman.
duty chucks The Jacobs Professional Duty Chuck brings professional quality and accuracy to the tradesman or serious home
craftsman. These chucks are standard equipment on many of the worlds finest commercial-grade drills. No other
chuck in its class can match the accuracy, grip and strength produced by the Jacobs Professional Chuck with its
through-hardened jaws and durable internal construction. Each chuck is individually quality inspected and
backed by Jacobs Warrants.

FEATURES:
Industrial quality.
Through-hardened jaws provide hard, durable gripping surfaces.
One-piece sleeve eliminates crack between driving teeth often found in other designs.
Fluted sleeve finish.
Each chuck 100% inspected for performance and precision
keyed chuck - portable tools

Model/ Capacity Range Dimensions Weight

Part Minimum Maximum Mount Key Closed Length Open Length Sleeve Dia. Ea.
No. in mm in mm Thread No. in mm in mm in mm oz

30246 0.063 1.6 0.375 10 3/8-24 KK 2.42 61.5 1.89 48.0 1.42 36.1 5.0

31052 0.063 1.6 0.500 13 1/2-20 KK 3.00 76.2 2.30 58.4 1.72 43.6 22.0

multi-craft The worlds most popular drill chuck for portable

drill chuck power tools.
The Multi-Craft Drill Chuck is mounted as original equipment on more drills than any other chuck by both
domestic and import drill manufacturers. It features through-hardened jaws and a design found only in competi-
tors industrial-grade chucks. Each chuck is backed by the Jacobs warranty. Ideal for corded or cordless reversible
or nonreversible power drills.

FEATURES:
Offered in 1/4", 3/8" and 1/2" capacities.
Through-hardened jaws for hard, wear resistant gripping surfaces.

Model/ Capacity Range Dimensions Weight

Part Minimum Maximum Mount Key Closed Length Open Length Sleeve Dia. Ea.
No. in mm in mm Thread No. in mm in mm in mm oz

1/4 Capacity

30243 0.028 0.1 0.250 6.5 3/8-24 KG1 2.020 51.308 1.575 40.005 1.13 28.6 3.5

3/8 Capacity

30247 0.062 1.5 0.375 10.0 3/8-24 KG1 2.312 58.725 1.850 46.990 1.22 31.1 5.0

1/2 Capacity

30598 0.078 2.0 0.500 13.0 3/8-24 KK 2.855 72.517 2.250 57.150 1.61 41.0 11.0

30602 0.078 2.0 0.500 13.0 1/2-20 KK 2.855 72.517 2.250 57.150 1.61 41.0 11.0

28
PORTABLE TOOL CHUCKS AND ACCESSORIES

special purpose
chucks

adapt-a-drive Converts any cordless screwdriver to a multi-purpose

chuck mini-drill for bit sizes up to 1/4".
FEATURES:
Easy conversion-integral hex mount locks the Adapt-A-Drive chuck into the screwdriver bit socket.
Ideal for use in starting screw holes for use in hard-to-reach spaces.

KEYED and keyless chuck - portable tools

Model/ Capacity Range Sleeve Weight
Part Minimum Maximum Mount Key Sleeve Diameter Ea.
No. in mm in mm Thread No. Finish in mm oz

30248 0.028 0.7 0.250 6.5 .250-Hex KG1 Ground-Matte Band 1.13 28.6 3.5

stainless steel FEATURES:

chucks For special applications on either portable air operated or stationary machine tools.
Resist chemical corrosion and reduce potential for hazardous sparking.

Capacity Range Dimensions Weight

Model Part Minimum Maximum Mount Key Closed Length Open Length Sleeve Dia. Ea.

No. No. in mm in mm Style No. in mm in mm in mm oz

OM 6624 0(1) 0 0.156 4 0 JT(2) K0M 1.45 37 1.10 28 0.85 22 2.0

OBM 5/16 6625 0(1) 0 0.156 4 5/16-24 K0M 1.53 39 1.17 30 0.85 22 2.0
1M 6626 0(1) 0 0.250 6 1 JT(2) K1M 1.92 49 1.54 39 1.12 28 5.0
1BM 5/16 6627 0(1) 0 0.250 6 5/16-24 K1M 1.95 50 1.57 40 1.12 28 5.0
1BM 3/8 6628 0(1) 0 0.250 6 3/8-24 K1M 1.95 50 1.57 40 1.12 28 5.0

(1) Minimum capacity will hold a No. 70 (.028in/.711mm) drill.

(2) Jacobs Taper

drain chuck FEATURES:

Specifically designed for use with flexible coil spring tools. Allows coil spring to pass through chuck.
Chuck may be hand tightened to secure coil spring at desired length transmitting tool rotation to shaft.
Ideal for soil pipe and sewer cleaning tools.

Capacity Range Dimensions Weight

Model Part Minimum Maximum Mount Closed Length Open Length Sleeve Dia. Ea.

No. No. in mm in mm Style in mm in mm in mm oz

DC4595 30726 0.25 6.4 0.500 13 13/16-20 2.49 63.2 2.49 63.2 1.70 43.2 4.5

29
 PORTABLE TOOL CHUCKS AND ACCESSORIES

chuck keys and Comprehensive selection of Jacobs precision crafted keys

meet any need. Choice of models with nickel thumb grips,
accessories "T" handles plus self ejecting keys.

chuck keys FEATURES:

Nickel thumb grip styles increase leverage and user comfort.
Soft steel handles limit the potential for dangerous fracturing under excessive load.
Self-ejecting models with spring-loaded ejectors ensure key disengagement after tightening.

Model Part Pilot Size

No. No. in Used On
K0* (1) 3637 1/8 0 Series
T-Handle K0M (1) 3639 1/8 0 Series Stainless
K1* (1) 3641 5/32 1 Series
K1M (1) 3643 5/32 1 Series Stainless
chuck keys & accessories

K2* (3) 3649 1/4 2 Series

K3* (3) 3651 5/16 3, 34 Series & 14N
K3C (3) 3653 5/16 34-33 C
K4* (3) 3655 3/8 36. 16, 18N
K5 (1) 3657 7/16 20N
L-Handle K7* (3) 3659 7/32 7 Series
K30* (3) 3664 15/16 31 Series & 8-1/2N
K32* (3) 3666 1/4 32,33 Series& 11N
KK (1) 30052 9/32 DC8, SM8, 74K, 22BA, 23BA, 24BA, 26BA, 29-33,
30246, 30598, 30602, 31052
KG1 (1) 14273 1/4 1/4 & 3/8 Multi-Craft (black handle)
KGA (2) 3605 1/4 1/4 & 3/8" MuIti-Craft
(1) 30827 13/64 1/4 & 3/8" chucks

* Must be ordered in multiples of 20 keys.

(1) - T-Handle (2) - L-Handle (3) - Thumb Handle
Thumb Handle

self-ejecting keys Model Part Pilot Size

No. No. in Used On
S-K3C (1) 2948 5/16 3, 34 Series & 14N
S-KK (1) 3157 9/32 DC8, SM8, 74K, 22BA, 23BA, 24BA, 26BA

(1) - T-Handle

accessories Wedge sets keyleashes

FEATURES:
Model Part Fits
For removing taper mount chucks from arbors or chucks. No. No. Key No.
Model A 3685 K0, K1, K7, KG
Set* Part Used On
Model B 3686 K30, K32, K2, KK
No. No. Jacobs Taper No.
#1 Wedge Set 13266 1JT CAUTIONS:
#2 Wedge Set 13267 2JT
Wedge Set Never apply extensions, pliers, wrenches or cheaters of any kind to
#3 Wedge Set 13268 3JT
#6 Wedge Set 13269 6JT chuck key handles.
Do not subject chuck key handles to hammer or other impact blows.

Keyleash

30
Mount Specifications
Taper Specifications
Tool Shank Standards

technical
information

31
 TECHNICAL INFORMATION

JACOBS TAPERS The tables below reproduce and
AND MOUNTS classify the normal dimensions of
Jacobs tapers and mounts. They
also observe the generally accepted
designation. In effect, the range of
increasing values for diameter D
contains two No. 2 tapers, the first
of which is No. 2 short taper.
Between the tapers 2 and 3, there
are two interpolated tapers which
bear the out-of-series numbers 33
and 6 respectively.

Jacobs Taper

Taper D d l1 on Diameter

No in. mm in. mm in. mm in. mm

0 0.250 0 6.350 0.228 4 5.802 0.437 50 11.112 0.591 45 15.023

1 0.384 0 9.754 0.333 4 8.469 0.565 25 16.669 0.925 08 23.497
2 short 0.548 8 13.940 0.487 6 12.386 0.750 00 19.050 0.978 61 24.857
2 0.559 0 14.199 0.487 6 12.386 0.875 00 22.225 0.978 61 24.857
33 0.624 0 15.850 0.560 5 14.237 1.000 00 25.400 0.761 94 19.353
6 0.676 0 17.170 0.624 1 15.852 1.000 00 25.400 0.622 92 15.822
3 0.811 0 20.599 0.746 1 18.951 1.218 75 30.956 0.638 98 16.230
4 1.124 0 28.550 1.037 2 26.346 1.656 25 42.069 0.628 86 15.973
5 1.413 0 35.890 1.316 1 33.422 1.875 00 47.625 0.620 10 15.773

jacobs standard
threaded mounts
jacobs tapers & mounts

jacobs standard
straight mount NOTE:
All dimensions are in inches unless otherwise specified.

CAUTION:

When designing for new applications, contact the Engineering

Department, The Jacobs Chuck Manufacturing Company for
current specifications.

32
TECHNICAL INFORMATION

din
tapers

DIN taper DIN tapered sections are identical with the

interchangability following Morse tapers:
No. 1, for tapers B10 and B12
No. 2, for tapers B16 and B18
No. 3, for tapers B22 and B24
The length of each of these tapers is, or course, distinctly less
than the overall length of the corresponding Morse taper. Each
taper may be regarded as corresponding approximately either to
that part of the Morse taper nearest the small end (for example:
B10), or to the part nearest the large end (for example: B12).

Ref. D D1* d* d1 l1 a(max.) b c Morse Taper on Diameter

No. in. mm in. mm in. mm in. mm in. mm in. mm in. mm in. mm No. in. mm

B10 0.397 4 10.094 0.403 6 10.3 0.368 9 9.4 25/64 9.8 0.571 14.5 0.125 3.5 0.125 3.5 0.047 1.0 1 0.049 88 1.267
B12 0.475 0 12.065 0.481 2 12.2 0.487 7 11.1 29/64 11.5 0.728 18.5 0.125 3.5 0.125 3.5 0.047 1.0 1 0.049 88 1.267
B16 0.619 4 15.733 0.628 8 16.0 0.572 2 14.5 19/32 15.0 0.945 24.0 0.188 5.0 0.156 4 0.063 1.5 2 0.049 95 1.269
B18 0.700 0 17.780 0.709 4 18.0 0.637 1 16.2 21/32 16.8 1.260 32.0 0.188 5.0 0.156 4 0.063 1.5 2 0.049 95 1.269
B22 0.858 0 21.793 0.867 4 22.0 0.778 0 19.8 13/16 20.5 1.594 40.5 0.188 5.0 0.188 4.5 0.078 2.0 3 0.050 20 1.275
B24 0.938 0 23.825 0.947 4 24.1 0.838 2 21.3 7/8 22.0 1.988 50.5 0.188 5.0 0.188 4.5 0.078 2.0 3 0.050 20 1.275
0.947 4 24.1 0.838 2 21.3 7/8 22.0 1.988 50.5 0.188 5.0 0.188 4.5 0.078 2.0 3 0.050 20 1.275
din tapers

NOTES:
D1 and d = calculated values given for information.
The effective values are obtained by applying the rate of taper and
the basic dimension D to the actual values of a and I1, respectively.

33
 TECHNICAL INFORMATION

morse Nos. 1 to 6 METRIC

tapers

external taper
with tang

NOTE: All dimensions are in millimeters unless otherwise specified.

Designation Metric Taper Morse Taper Metric Taper

4 6 1 2 3 4 5 6 80 100 120 160 200
0.598 58:12 0.599 41:12 0.062 35:12 0.623 26:12 0.631 51:12 0.625 65:12
Basic =1:20.047 =1:20.020 =1:19.922 =1:19.254 =1:19.002 =1:19.180
Size Taper 1:20=0.05 =.049 88 =0.049 95 =0.050 20 =0.051 94 =0.052 63 =0.052 14 1:20 = 0.05
D 4 6 12.065 17.780 23.825 31.267 44.399 63.348 80 100 120 160 200
a 2 3 3.5 5 5 6.5 6.5 8 8 10 12 16 20
D1 (1) 4.1 6.2 12.2 18 24.1 31.6 44.7 63.8 80.4 100.5 120.6 160.8 201
d (1) 2.9 4.4 9.4 14.6 19.8 25.9 37.6 53.9 70.2 88.4 106.6 143 179.4
d1 (2) - - M6 M10 M12 M16 M20 M24 M30 M36 M36 M48 M48
d3 max. - - 8.7 13.5 18.5 24.5 35.7 51 67 85 102 138 174
d2 (1) - - 9 14 19.1 25.2 36.5 52.4 69 87 105 141 177
d4 max. 2.5 4 9 14 19 25 35.7 51 67 85 102 138 174
l1 max. 23 32 53.5 64 81 102.5 129.5 182 196 232 268 340 412
l2 max. 25 35 57 69 86 109 136 190 204 242 280 356 432
External Taper

l3 max. - - 62 75 94 117.5 149.5 210 220 260 300 380 460

l4 max. - - 65.5 80 99 124 156 218 228 270 312 396 480
b h13 - - 5.2 6.3 7.9 11.9 15.9 19 26 32 38 50 62
c (3) - - 8.5 10 13 16 19 27 24 28 32 40 48
e max. - - 13.5 16 20 24 29 40 48 58 68 88 108
I min. - - 16 24 28 32 40 50 65 80 80 100 100
R max. - - 5 6 7 8 10 13 24 30 36 48 60
R max. - - 1.2 1.6 2 2.5 3 4 5 5 6 8 10
t max. 2 3 5 5 7 9 10 16 24 30 36 48 60
d5 H11 3 4.6 9.7 14.9 20.2 26.5 38.2 54.6 71.5 90 108.5 145.5 182.5
d6 - - 7 11.5 14 18 23 27 33 36 39 52 52
l5 min. 25 34 56 67 84 107 135 188 202 240 276 350 424
l6 21 29 52 62 78 98 125 177 186 220 254 321 388
Internal Taper

g A13 22 32 52 63 79 11.9 15.9 19 26 32 38 50 62

morse tapers

h 8 12 19 22 27 32 33 47 52 60 70 90 110
z (4) 0.5 0.5 1 1 1 1.5 1.5 2 2 2 2 3 3

NOTES:
1. D1 and d or d2 = approximate vlaues given for guidance. The actual
values result from the actual values of a and I1 or I3 respectively,
taking into account the taper and the basix size D.
2. It is allowed to increase the length c over which the tang is
turned to diameter d3, but without exceeding e.
3. z = maximum permissible deviation, outwards onlm of the position
of the gage plane D from the nominal position of coincidence with
the leading face.

34
TECHNICAL INFORMATION

morse Nos. 1 to 6
tapers

external taper
with tang

NOTE: All dimensions are in inches unless otherwise specified.

Designation Morse Taper

1 2 3 4 5 6
0.598 58:12 0.599 41:12 0.062 35:12 0.623 26:12 0.631 51:12 0.625 65:12
Basic =1:20.047 =1:20.020 =1:19.922 =1:19.254 =1:19.002 =1:19.180
Size Taper =.049 88 =0.049 95 =0.050 20 =0.051 94 =0.052 63 =0.052 14
D 0.475 0.700 0.938 1.231 1.748 2.494
a 1/8 3/16 3/16 1/4 1/4 5/16
D1 (1) 0.481 2 0.709 4 0.947 4 1.244 0 1.761 2 2.510 3
d (1) 0.369 0 0.572 0 0.778 0 1.020 0 1.475 0 2.116 0
d1 (2) UNC 1/4 UNC 3/8 UNC 1/2 UNC 5/8 UNC 5/8 UNC 1
d2 (1) 0.353 4 0.553 3 0.752 9 0.990 8 1.438 8 2.063 9
d3 max. 11/32 17/32 23/32 31/32 1-13/32 2
d4 max. 11/32 17/32 23/32 31/32 1-13/32 2
External Taper

l1 max. 2-1/8 2-9/16 3-3/16 4-1/16 5-3/16 7-1/4

l2 max. 2-1/4 2-3/4 3-3/8 4-5/16 5-7/16 7-9/16
l3 max. 2-7/16 2-15/16 3-11/16 4-5/8 5-7/8 8-1/4
l4 max. 2-9/16 3-1/8 3-7/8 4-7/8 6-1/8 8-9/16
b h12 0.203 1 0.250 0 0.312 5 0.468 7 0.625 0 0.750 0
c (3) 11/32 13/32 17/32 5/8 3/4 1-1/16
e max. 0.52 0.66 0.83 0.96 1.15 1.58
I min. 1/2 3/4 1 1-1/4 1-1/4 2
R max. 3/16 1/4 9/32 5/16 3/8 1/2
r max. 3/64 1/16 5/64 3/32 1/8 5/32
t max. 3/16 3/16 1/4 1/4 5/16 3/8
d5 H11 0.378 0.588 0.797 1.044 1.502 2.150
d6 9/32 7/16 9/16 11/16 11/16 1-1/8
Internal Taper

l5 min. 2-3/16 2-21/32 3-9/32 4-5/32 5-5/16 7-3/8

l6 2-1/16 2-1/2 3-1/16 3-7/8 4-15/16 7
g H12 0.223 0.270 0.333 0.493 0.650 0.780
h 3/4 7/8 1-1/8 1-1/4 1-1/2 1-7/8
morse tapers

z (4) 0.040 0.040 0.040 0.060 0.060 0.080

NOTES:
1. D1 and d or d2 = approximate vlaues given for guidance. The actual
values result from the actual values of a and I1 or I3 respectively,
taking into account the taper and the basix size D.
2. It is allowed to increase the length c over which the tang is
turned to diameter d3, but without exceeding e.
3. z = maximum permissible deviation, outwards onlm of the position
of the gage plane D from the nominal position of coincidence with
the leading face.

35
 TECHNICAL INFORMATION

tool shank ANSI/ASME B5.50 - 1994

standards

v-flange

NOTE: All dimensions are in inches unless otherwise specified.

Tols. A B C D E F G H J K L M N P R S T U Z

Gage 0.015 0.000 +0.000 Min. +0.000

Size Dia. 0.005 0.010 Min. -0.000 UNC 2B 0.010 0.002 -0.015 -0.015 0.010 0.005 Min. 0.002 0.010 Flat 0.0010 0.005
30 1.250 1.875 0.188 1.00 0.516 0.500-13 1.531 1.812 0.735 0.640 0.645 1.250 0.015 1.38 2.176 0.590 0.650 0.030 1.250
0.030
40 1.750 2.687 0.188 1.12 0.641 0.625-11 2.219 2.500 0.985 0.890 0.645 1.750 0.045 1.38 2.863 0.720 0.860 0.030 1.750
0.060
45 2.250 3.250 0.188 1.50 0.766 0.750-10 2.969 3.250 1.235 1.140 0.770 2.250 0.075 1.38 3.613 0.850 1.090 0.030 2.250
0.090
50 2.750 4.000 0.250 1.75 1.031 1.000-8 3.594 3.875 1.485 1.390 1.020 2.750 0.075 1.38 4.238 1.125 1.380 0.030 2.750
0.090
60 4.250 6.375 0.312 2.25 1.281 1.250-7 5.219 5.500 2.235 2.140 1.020 4.250 0.120 1.50 5.683 1.375 2.040 0.400 4.250
0.200

GENERAL NOTES:
(a) Taper cone tolerance is in accordance with ISO-1947
(b) Standard cone angle tolerance grade is to be AT-4
tool shanks

(c) Geometric dimension symbols are in accordance with ANSI Y14.5M-1982

(d) Deburr all sharp edges
(e) all unspecified fillets and radii: R 0.03 0.010 or 0.03 0.010 x 45 deg.

36
TECHNICAL INFORMATION

tool shank JMTBA MAS403 - 1982

standards

bt tapered shank

NOTE: All dimensions are in millimeters unless otherwise specified.

Shank Screw Tang

I4 t

Serial I1 R d2 g I2 I3 +0.5 b I5 O

No. D1 0.2 (max) d1 H8 6H (min) (min) 0 H12 (min) -0.2 w

BT30 31.75 48.4 0.5 14 12.5 M12 24 34 7.0 16.1 17 16.3 0.12
BT35 38.10 56.4 0.5 14 12.5 M12 24 34 7.0 16.1 20 19.6 0.12
BT40 44.45 65.4 1 19 17 M16 30 43 9.0 16.1 21 22.6 0.12
BT45 57.15 82.8 1 23 21 M20 38 53 11.0 19.3 26 29.1 0.12
BT50 69.85 101.8 1 27 25 M24 45 62 13.0 25.7 31 35.4 0.20
BT55 88.90 126.8 1 33 31 M30 56 76 16.0 25.7 31 45.1 0.20
BT60 107.95 161.8 1 33 31 M30 56 76 16.0 25.7 34 60.1 0.20

Flange 7/24 Taper Reference

x1 y1 Angle Small

Serial D5 v 0.1 y O Tolerance End

No. D4 h8 e 0.1 x 0 0.4 -0.4 (1) ATD Diam. d D6

BT30 38 46 20 13.6 4 8 2 2 +0.0039/-0 17.633 8 56.144

BT35 43 53 22 14.6 5 10 2 2 +0.0045/-0 21.650 10 65.680
BT40 53 63 25 16.6 5 10 2 2 +0.0041/-0 25.375 10 75.679
BT45 73 85 30 21.2 6 12 3 3 +0.0052/-0 33.000 12 100.216
BT50 85 100 35 23.2 7 15 3 3 +0.0051/-0 40.158 15 119.020
BT55 107 120 40 26.2 9 18 3 3 +0.0063/-0 51.917 18 147.823
BT60 135 155 45 28.2 11 20 3 3 +0.0065/-0 60.758 20 180.359
morse tapers

37
 SERVICE AND REPAIR

MOUNTING AND
REMOVING CHUCKS

on threaded spindle To mount chucks:

portable tools Thread chuck on the spindle by hand so that the back of the
chuck seats firmly against the mounting surface provided
on the portable tool spindle.

To remove chucks:

Chucks with threaded mounts can be identified by the letters

"B" or "BA" in the model number (1B, 41BA). "BA" model chucks
may have a left hand thread retaining screw through the chuck
body into the tool spindle. Remove retaining screw through the
chuck jaw hole opening, turn screw clockwise and proceed as
described for "B" model chucks. "B" model chucks may be
removed from a threaded spindle by tightening the chuck jaws
around a hex key and striking the key with a sharp blow in a
counter-clockwise direction, using a wooden or rubber hammer
(Illus. A).

Illus. A

on tapered To mount chucks:

spindles Clean both tapers of all grease and grit. With the chuck jaws
completely refracted into the chuck and using a thin piece of
wood to protect the chuck nose, tap the chuck into place on
the spindle.

To remove chucks:

If a power tool has a tapered spindle, the chuck may be

removed from the spindle by inserting chuck removal
wedges between the chuck back and the spindle housing
(Illus. B).

Illus. B

On tapered To mount chucks:

shank arbors Clean both tapers as above. With the jaws retracted into the
chuck and with the chuck nose resting on a wooden bench,
strike the tang of the arbor lightly to seat it into the chuck.
Do NOT assemble on an arbor press as excessive pressure
will expand the chuck body and distort the chuck jaw holes.
mounting and removing chucks

To remove chucks:

Insert wedges between the back of the chuck and the shoulder
of the arbor (Illus. C). In case the mounting taper of the arbor
does not provide a shoulder, a cross hole should be drilled
through the neck of the arbor (illus. D) and a cross pin inserted.
Then the wedges can be used between the chuck back and the
cross pin. If desired, a hole may be drilled through the soft
center portion of the chuck body (Illus. D), and a pin may then
be used with an arbor press to force the arbor out of the chuck.

Illus. C Illus. D

38
SERVICE AND REPAIR

REPAIR
INSTRUCTIONS

disassembly Plain Bearing Chucks:

Extend the jaws to half capacity, press the sleeve off over front
(jaw end) of body, remove the nut halves
(Illus. E).

Ball Bearing Chucks:

Extend the jaws to half capacity, press the sleeve off over front
(jaw end) of body, remove the nut halves, jaws, bearing race,
and thrust washer
(Illus. E).

Illus. E

assembly CAUTION: Each of the three jaws differ slightly from the
other by the location of the threaded portion (Illus. G).
In order to ensure proper operation, they must be
re-installed in the proper sequence.

Plain Bearing Chucks:

Refer to Illus. C and insert the jaws in the correct sequence

when viewing the chuck from the body nose diameter. insert
No. 1 jaw (with small step) first, then No. 2 jaw (with largest
step) in the clockwise position, then No. 3 jaw (without a step)
should be inserted.

Turn chuck jaws to closed position and check to ensure that

all three jaws are properly aligned. The height of all three
jaws should be uniform.

A good grade of grease should be applied to the jaw and nut

threads, then the nut halves should be closed around the jaws.
Extend jaws to half capacity. Press on the sleeve with an
arbor press (Illus. F).
Illus. F

Ball Bearing Chucks: JAW NUMBER INDICATED

BY PROFILES SHOWN BELOW.
Slip the thrust race over jaw end of the body until it contacts the
rear flange. Slip the caged bearing over jaw end of the body
until it contacts the thrust race.

Follow Plain Bearing jaw assembly and nut procedure.

repair instructions

Illus. G - Jaw Identification

39
 PRODUCT INDEX

BY MODEL NUMBER
Model No. Part No. Page No. Model No. Part No. Page No. Model No. Part No. Page No. Model No. Part No. Page No.
0 6200 9 33KD 6281 9 J916 9561 17 JKT 80-J2S 30526 11
33 6279 9 34~02 14442 9 J917 9562 17 JKT 100-J2 30533 11
36 6309 9 34-06 6295 9 J918 9563 17 JKT 100-J33 30532 11
531 30471 21 34-33 14445 9 J919 9564 17 JKT 130-J2 30527 11
542 30474 21 34-33C 14451 9 J920 9565 17 JKT 130-J6 30529 11
552 30475 21 35B 1/2 14723 10 J921 9567 17 JKT 130-J33 30528 11
553 30478 21 36B 3/4 6316 10 JBT 30-J2 30582 14 JKT 160-J6 30530 11
562 30476 21 36B 5/8 6314 10 JBT 30-J3 30583 14 JLE-M300 30506 22
563 30479 21 36KD 14865 9 JBT 30-J6 30585 14 JLE-M400 30507 22
564 30482 21 36PD 14866 9 JBT 30-J33 30584 14 JLE-M500 30508 22
573 30480 21 3A 6223 9 JBT 40-J2 30586 14 JLR-M200 30509 22
584 30483 21 3B 5/8 6232 10 JBT 40-J3 30587 14 JLR-M300 30510 22
610 30421 20 3KD 6228 9 JBT 40-J4 30589 14 JLR-M400 30511 22
621 30422 20 3PD 6230 9 JBT 40-J6 30590 14 JLR-M500 30512 22
631 30424 20 41-01 14121 15 JBT 40-J33 30588 14 JLS-M200 30502 22
632 30423 20 41BA 1/2 31090 10 JBT 45-J3 30591 14 JLS-M300 30503 22
641 30427 20 41BA 3/8 30728 10 JBT 45-J4 30593 14 JLS-M400 30504 22
642 30426 20 41BA 3/8-S 31138 10 JBT 45-J5 30594 14 JLS-M500 30505 22
643 30425 20 42-01 14123 15 JBT 45-J33 30592 14 K1 3641 30
651 30638 20 42-02 14125 15 JBT 50-J3 30595 14 K1M 3643 30
652 30430 20 42-24 14129 15 JBT 50-J4 30596 14 K2 3649 30
653 30429 20 42-J8 14127 15 JBT 50-J5 30597 14 K3 3651 8,30
654 30428 20 44-02 14131 15 JCJ 30-J2 30566 14 K3C 3653 30
664 30639 20 44-J9 14135 15 JCJ 30-J3 30567 14 K4 3655 8,30
665 30431 20 7BA 3/8 6255 10 JCJ 30-J6 30569 14 K5 3657 8,30
710 30432 20 8-1/2 N 30209 8 JCJ 30-J33 30568 14 K7 3659 30
732 30434 20 A4000 7348 18 JCJ 40-J2 30570 14 K30 3664 8,30
742 30437 20 A4001 7349 18 JCJ 40-J3 30571 14 K32 3666 8,30
743 30436 20 A4002 7350 18 JCJ 40-J4 30573 14 KG1 14273 30
751 30762 20 A4003 7351 18 JCJ 40-J6 30574 14 KGA 3605 30
752 30441 20 A4006 7353 18 JCJ 40-J33 30572 14 KK 30052 30
753 30440 20 A4033 7354 18 JCJ 45-J3 30575 14 KO 3637 30
754 30439 20 A4101 7355 18 JCJ 45-J4 30577 14 KOM 3639 30
764 30822 20 A4102 7356 18 JCJ 45-J5 30578 14 Model A 3685 30
811 30443 20 A4103 7357 18 JCJ 45-J33 30576 14 Model B 3686 30
812 30444 20 A4106 7359 18 JCJ 50-J3 30579 14
PRODUCT INDEX

N100 12791 15
821 30445 20 A4133 7360 18 JCJ 50-J4 30580 14 OB 5/16 6204 10
822 30446 20 A4202 7361 18 JCJ 50-J5 30581 14 OBM 5/16 6625 29
823 30447 20 A4203 7362 18 JK 80 3/8 33356 12 OM 6624 29
831 30448 20 A4206 7364 18 JK 80 J1 33357 12 S-K3C 2948 30
832 30449 20 A4233 7365 18 JK 80 J2 33358 12 S-KK 3157 30
833 30450 20 A4303 7367 18 JK 80-MT2 31406 12 S3 4944 10
834 30451 20 A4306 7368 18 JK 100 3/8 33359 12 S8-1/2N 5089 8
842 30640 20 AD2502 7374 19 JK 100 1/2 33360 12 S11N 5097 8
843 30452 20 AO101 7299 18 JK 100 J2 33361 12 S14N 5506 8
844 30453 20 AO102 7300 18 JK 100-MT2 31407 12 S16N 5514 8
845 30454 20 AO106 7303 18 JK 130 3/8 33362 12 S18N 5522 8
853 30641 20 AO133 7304 18 JK 130 1/2 33363 12 S20N 5530 8
854 30455 20 AO201 7306 18 JK 130 5/8 31412 12 S33 5016 10
855 30456 20 AO202 7307 18 JK 130 J33 33364 12 S34 5046 10
900 30484 21 AO203 7308 18 JK 130 J2 33365 12 S36 5066 10
902 30485 21 AO204 7309 18 JK 130 J6 33366 12 TL2 30496 23
903 30486 21 AO206 7311 18 JK 130-MT2 31408 12 TL3 30497 23
904 30487 21 AO233 7312 18 JK 130-MT3 31409 12 TL3 half 30501 23
906 30488 21 AO261 7345 19 JK 130-MT4 31410 12 TL4 30498 23
914 30489 21 AO264 7346 19 JK 130-R8 31411 12 TS1 30490 23
30243 30243 28 AO268 7347 19 JK 160 1/2 33367 12 TS2 30491 23
30246 30246 28 AO301 7313 18 JK 160 5/8 33368 12 TS3 30492 23
30247 30247 28 AO302 7314 18 JK 160 J33 33369 12 TS4 30493 23
30248 30248 29 AO303 7315 18 JK 160 J6 33370 12 TS5 30494 23
30354 30354 26 AO304 7316 18 JK 160-MT2 31413 12 U3 7417 10
30598 30598 28 AO305 7317 18 JK 160-MT3 31414 12 U33 7423 10
30602 30602 28 AO306 7318 18 JK 160-MT4 31415 12 U34 7424 10
31037 31037 26 AO333 7319 18 JK 160-R8 31416 12 U36 7425 10
31038 31038 26 AO402 7320 18 JK 200 J3 33371 12 1848 15
31052 31052 28 AO403 7321 18 JKB 80-30 30536 13 1849 15
31237 31237 27 AO404 7322 18 JKB 80-40 30537 13 1850 15
#1 Wedge Set 13266 30 AO405 7323 18 JKB 80-40L 30538 13 1851 15
#2 Wedge Set 13267 30 AO406 7324 18 JKB 130-40 30539 13 6654 15
#3 Wedge Set 13268 30 AO433 7325 18 JKB 130-40L 30540 13 6655 15
#6 Wedge Set 13269 30 AO503 7327 18 JKB 130-45 30542 13 6656 15
100-61 9756 15 AO504 7328 18 JKB 130-50 30543 13 7430 8
11N 30215 8 AO505 7329 18 JKB 160-40 30541 13 7431 8
14N 30221 8 AO802 7339 19 JKB 160-50 30544 13 7432 8
16N 30227 8 AO803 7340 19 JKB 160-50L 30545 13 7433 8
18N 30233 8 AO804 7341 19 JKC 80-30 30551 13 7434 8
1A 6206 9 AO806 7342 19 JKC 80-40 30552 13 7435 8
1B 3/8 6208 10 AO833 7343 19 JKC I30-40 30553 13 7436 8
1BM 3/8 6628 29 DC4595 30726 29 JKC 130-45 30554 13 7437 8
1BM 5/16 6627 29 J116 9757 18,19 JKC 130-50 30555 13 7438 8
1M 6626 29 J117 9758 18,19 JKC 160-40 30556 13 7439 8
22BA 3/8 14943 10 J420 9747 16 JKC 160-50 30557 13 7440 8
24BA 3/8 14946 10 J421 9748 16 JKP 65-J1 31121 11 7441 8
26BA 3/8 14947 10 J422 9751 16 JKP 03-JO 31126 11 12792 15
20N 30239 8 J423 9817 18 JKP 03-J1 31127 11 12793 15
2A 6214 9 J440 9749 16 JKP 03 5/16 31128 11 12794 15
2BA 3/8 6219 10 J441 9750 16 JKP 80-J2S 9679 11 30343 8
31-01 14697 9 J443 9867 18 JKP 100-J2 9681 11 30344 8
31-02 14698 9 J910 9555 17 JKP 100-J33 9680 11 30345 8
32BA 1/2 8859 10 J911 9556 17 JKP 130-J2 9683 11 30346 8
3326A 6291 9 J912 9557 17 JKP 130-J6 9684 11 30347 8
33BA 1/2 6287 10 J913 9558 17 JKP 130-J33 9682 11 30348 8
33BA 3/8 6283 10 J914 9559 17 JKP 160-J6 9685 11 30827 30

40
33BA 5/8 6289 10 J915 9560 17 JKT 65-J1 31122 11
PRODUCT INDEX

BY PART NUMBER
Part No. Model No. Page No. Part No. Model No. Page No. Part No. Model No. Page No. Part No. Model No. Page No.
1848 15 7347 AO268 18 30215 11N 8 30540 JKB 130-40L 12
1849 15 7348 A4000 17 30221 14N 8 30541 JKB 160-40 12
1850 15 7349 A4001 17 30227 16N 8 30542 JKB 130-45 12
1851 15 7350 A4002 17 30233 18N 8 30543 JKB 130-50 12
2948 S-K3C 30 7351 A4003 17 30239 20N 8 30544 JKB 160-50 12
3157 S-KK 28 7353 A4006 17 30243 30243 26 30545 JKB 160-50L 12
3605 KGA 28 7354 A4033 17 30246 30246 26 30551 JKC 80-30 12
3637 KO 28 7355 A4101 17 30247 30247 26 30552 JKC 80-40 12
3639 KOM 28 7356 A4102 17 30248 30248 27 30553 JKC I30-40 12
3641 K1 28 7357 A4103 17 30343 8 30554 JKC 130-45 12
3643 K1M 28 7359 A4106 17 30344 8 30555 JKC 130-50 12
3649 K2 28 7360 A4133 17 30345 8 30556 JKC 160-40 12
3651 K3 8,28 7361 A4202 17 30346 8 30557 JKC 160-50 12
3653 K3C 28 7362 A4203 17 30347 8 30566 JCJ 30-J2 13
3655 K4 8,28 7364 A4206 17 30348 8 30567 JCJ 30-J3 13
3657 K5 8,28 7365 A4233 17 30354 30354 24 30568 JCJ 30-J33 13
3659 K7 28 7367 A4303 17 30421 610 19 30569 JCJ 30-J6 13
3664 K30 8,28 7368 A4306 17 30422 621 19 30570 JCJ 40-J2 13
3666 K32 8,28 7374 AD2502 18 30423 632 19 30571 JCJ 40-J3 13
3685 Model A 28 7417 U3 10 30424 631 19 30572 JCJ 40-J33 13
3686 Model B 28 7423 U33 10 30425 643 19 30573 JCJ 40-J4 13
3687 Model C 28 7424 U34 10 30426 642 19 30574 JCJ 40-J6 13
4944 S3 10 7425 U36 10 30427 641 19 30575 JCJ 45-J3 13
5016 S33 10 7430 8 30428 654 19 30576 JCJ 45-J33 13
5046 S34 10 7431 8 30429 653 19 30577 JCJ 45-J4 13
5066 S36 10 7432 8 30430 652 19 30578 JCJ 45-J5 13
5089 S8-1/2N 8 7433 8 30431 665 19 30579 JCJ 50-J3 13
5097 S11N 8 7434 8 30432 710 19 30580 JCJ 50-J4 13
5506 S14N 8 7435 8 30434 732 19 30581 JCJ 50-J5 13
5514 S16N 8 7436 8 30436 743 19 30582 JBT 30-J2 13
5522 S18N 8 7437 8 30437 742 19 30583 JBT 30-J3 13
5530 S20N 8 7438 8 30439 754 19 30584 JBT 30-J33 13
6200 0 9 7439 8 30440 753 19 30585 JBT 30-J6 13
6204 OB 5/16 10 7440 8 30441 752 19 30586 JBT 40-J2 13
6206 1A 9 7441 8 30443 811 19 30587 JBT 40-J3 13
6208 1B 3/8 10 8859 32BA 1/2 10 30444 812 19 30588 JBT 40-J33 13

PRODUCT INDEX
6214 2A 9 9555 J910 16 30445 821 19 30589 JBT 40-J4 13
6219 2BA 3/8 10 9556 J911 16 30446 822 19 30590 JBT 40-J6 13
6223 3A 9 9557 J912 16 30447 823 19 30591 JBT 45-J3 13
6228 3KD 9 9558 J913 16 30448 831 19 30592 JBT 45-J33 13
6230 3PD 9 9559 J914 16 30449 832 19 30593 JBT 45-J4 13
6232 3B 5/8 10 9560 J915 16 30450 833 19 30594 JBT 45-J5 13
6255 7BA 3/8 10 9561 J916 16 30451 834 19 30595 JBT 50-J3 13
6279 33 9 9562 J917 16 30452 843 19 30596 JBT 50-J4 13
6281 33KD 9 9563 J918 16 30453 844 19 30597 JBT 50-J5 13
6283 33BA 3/8 10 9564 J919 16 30454 845 19 30598 30598 26
6287 33BA 1/2 10 9565 J920 16 30455 854 19 30602 30602 26
6289 33BA 5/8 10 9567 J921 16 30456 855 19 30638 651 19
6291 3326A 9 9679 JKP 80-J2S 11 30471 531 20 30639 664 19
6295 34-06 9 9680 JKP 100-J33 11 30474 542 20 30640 842 19
6309 36 9 9681 JKP 100-J2 11 30475 552 20 30641 853 19
6314 36B 5/8 10 9682 JKP 130-J33 11 30476 562 20 30726 DC4595 27
6316 36B 3/4 10 9683 JKP 130-J2 11 30478 553 20 30728 41BA 3/8 10
6624 OM 27 9684 JKP 130-J6 11 30479 563 20 30762 751 19
6625 OBM 5/16 27 9685 JKP 160-J6 11 30480 573 20 30822 764 19
6626 1M 27 9747 J420 15 30482 564 20 30827 28
6627 1BM 5/16 27 9748 J421 15 30483 584 20 31037 31037 24
6628 1BM 3/8 27 9749 J440 15 30484 900 20 31038 31038 24
6654 14 9750 J441 15 30485 902 20 31052 31052 26
6655 14 9751 J422 15 30486 903 20 31090 41BA 1/2 10
6656 14 9756 100-61 14 30487 904 20 31121 JKP 65-J1 11
7299 AO101 17 9757 J116 17,18 30488 906 20 31122 JKT 65-J1 11
7300 AO102 17 9758 J117 17,18 30489 914 20 31126 JKP 03-J0 11
7303 AO106 17 9817 J423 17 30490 TS1 22 31127 JKP 03-J1 11
7304 AO133 17 9867 J443 17 30491 TS2 22 31128 JKP 03 5/16 11
7306 AO201 17 12791 N100 14 30492 TS3 22 31138 41BA 3/8-S 10
7307 AO202 17 12792 14 30493 TS4 22 31237 31237 25
7308 AO203 17 12793 14 30494 TS5 22 31406 JK 80-MT2 12
7309 AO204 17 12794 14 30496 TL2 22 31407 JK 100-MT2 12
7311 AO206 17 13266 #1 Wedge Set 28 30497 TL3 22 31408 JK 130-MT2 12
7312 AO233 17 13267 #2 Wedge Set 28 30498 TL4 22 31409 JK 130-MT3 12
7313 AO301 17 13268 #3 Wedge Set 28 30501 TL3 half 22 31410 JK 130-MT4 12
7314 AO302 17 13269 #6 Wedge Set 28 30502 JLS-M200 21 31411 JK 130-R8 12
7315 AO303 17 14121 41-01 14 30503 JLS-M300 21 31412 JK 130 5/8 12
7316 AO304 17 14123 42-01 14 30504 JLS-M400 21 31413 JK 160-MT2 12
7317 AO305 17 14125 42-02 14 30505 JLS-M500 21 31414 JK 160-MT3 12
7318 AO306 17 14127 42-J8 14 30506 JLE-M300 21 31415 JK 160-MT4 12
7319 AO333 17 14129 42-24 14 30507 JLE-M400 21 31416 JK 160-R8 12
7320 AO402 17 14131 44-02 14 30508 JLE-M500 21 33356 JK 80 3/8 12
7321 AO403 17 14135 44-J9 14 30509 JLR-M200 21 33357 JK 80 J1 12
7322 AO404 17 14273 KG1 28 30510 JLR-M300 21 33358 JK 80 J2 12
7323 AO405 17 14442 34~02 9 30511 JLR-M400 21 33359 JK 100 3/8 12
7324 AO406 17 14445 34-33 9 30512 JLR-M500 21 33360 JK 100 1/2 12
7325 AO433 17 14451 34-33C 9 30526 JKT 80-J2S 11 33361 JK 100 J2 12
7327 AO503 17 14697 31-01 9 30527 JKT 130-J2 11 33362 JK 130 3/8 12
7328 AO504 17 14698 31-02 9 30528 JKT 130-J33 11 33363 JK 130 1/2 12
7329 AO505 17 14723 35B 1/2 10 30529 JKT 130-J6 11 33364 JK 130 J33 12
7339 AO802 18 14865 36KD 9 30530 JKT 160-J6 11 33365 JK 130 J2 12
7340 AO803 18 14866 36PD 9 30532 JKT 100-J2 11 33366 JK 130 J6 12
7341 AO804 18 14943 22BA 3/8 10 30533 JKT 100-J33 11 33367 JK 160 1/2 12
7342 AO806 18 14946 24BA 3/8 10 30536 JKB 80-30 12 33368 JK 160 5/8 12
7343 AO833 18 14947 26BA 3/8 10 30537 JKB 80-40 12 33369 JK 160 J33 12
7345 AO261 18 30052 KK 28 30538 JKB 80-40L 12 33370 JK 160 J6 12

41
7346 AO264 18 30209 8-1/2 N 8 30539 JKB 130-40 12 33371 JK 200 J3 12
 DECIMAL EQUIVALENT CHART

Drill Decimal Drill Decimal Drill Decimal Drill Decimal Drill Decimal Drill Decimal
Size Inches Size Inches Size Inches Size Inches Size Inches Size Inches
0.30mm 0.0118 54 0.0550 3.10mm 0.1220 5.50mm 0.2165 8.50mm 0.3346 9/16 0.5625
0.32mm 0.0126 1.40mm 0.0551 1/8 0.1250 7/32 0.2188 8.60mm 0.3386 14.50mm 0.5709
80 0.0135 1.45mm 0.0571 3.20mm 0.1260 5.60mm 0.2205 R 0.3390 37/64 0.5781
0.35mm 0.0138 1.50mm 0.0591 30 0.1285 2 0.2210 8.70mm 0.3425 14.75mm 0.5807
79 0.0145 53 0.0595 3.30mm 0.1299 5.70mm 0.2244 11/32 0.3438 15.00mm 0.5906
0.38mm 0.0150 1.55mm 0.0610 3.40mm 0.1339 1 0.2280 8.80mm 0.3465 19/32 0.5938
1/64 0.0156 1/16 0.0625 29 0.1360 5.80mm 0.2283 S 0.3480 15.25mm 0.6004
0.40mm 0.0157 1.60mm 0.0630 3.50mm 0.1378 5.90mm 0.2323 8.90mm 0.3504 39/64 0.6094
78 0.0160 52 0.0635 28 0.1405 A 0.2340 9.00mm 0.3543 15.50mm 0.6102
0.42mm 0.0165 1.65mm 0.0650 9/64 0.1406 15/64 0.2344 T 0.3580 15.75mm 0.6201
0.45mm 0.0177 1.70mm 0.0669 3.60mm 0.1411 6.00mm 0.2362 9.10mm 0.3583 5/8 0.6250
77 0.0180 51 0.0670 27 0.1440 B 0.2380 23/64 0.3594 16.00mm 0.6299
0.48mm 0.0189 1.75mm 0.0689 3.70mm 0.1457 6.10mm 0.2402 9.20mm 0.3622 16.25mm 0.6398
0.50mm 0.0197 50 0.0700 26 0.1417 C 0.2420 9.30mm 0.3661 41/64 0.6406
76 0.0200 1.80mm 0.0709 25 0.1495 6.20mm 0.2441 U 0.3680 16.50mm 0.6496
75 0.0210 1.85mm 0.0728 3.80mm 0.1496 D 0.2460 9.40mm 0.3701 21/32 0.6562
0.55mm 0.0211 49 0.0730 24 0.1520 6.30mm 0.2480 9.50mm 0.3740 16.75mm 0.6594
3.90mm 0.1535 1/4, E 0.2500 3/8 0.3750 17.00mm 0.6693
decimal equivalent chart

74 0.0225 1.90mm 0.0748

0.60mm 0.0236 48 0.0760 23 0.1540 6.40mm 0.2520 V 0.3770 43/64 0.6719
73 0.0240 1.95mm 0.0768 5/32 0.1562 6.50mm 0.2559 9.60mm 0.3780 17.25mm 0.6791
0.62mm 0.0244 5/64 0.0781 22 0.1570 F 0.2570 9.70mm 0.3819 11/16 0.6875
72 0.0250 47 0.0785 4.00mm 0.1575 6.60mm 0.2598 9.80mm 0.3858 17.50mm 0.6890
0.65mm 0.0256 2.00mm 0.0787 21 0.1590 G 0.2610 W 0.3860 45/64 0.7031
71 0.0260 2.05mm 0.0807 20 0.1610 6.70mm 0.2638 9.90mm 0.3898 18.00mm 0.7087
0.70mm 0.0276 46 0.0810 4.10mm 0.1614 17/64 0.2656 25/64 0.3906 23/32 0.7188
70 0.0280 45 0.0820 4.20mm 0.1654 H 0.2660 10.00mm 0.3937 18.50mm 0.7283
69 0.0292 2.10mm 0.0827 19 0.1660 6.80mm 0.2677 X 0.3970 47/84 0.7344
0.75mm 0.0295 2.15mm 0.0846 4.30mm 0.1693 6.90mm 0.2717 10.20mm 0.4016 19.00mm 0.7480
68 0.0310 44 0.0860 18 0.1695 I 0.2720 Y 0.4040 3/4 0.7500
1/32 0.0312 2.20mm 0.0866 11/64 0.1719 7.00mm 0.2756 13/32 0.4062 49/64 0.7656
0.80mm 0.0315 2.25mm 0.0886 17 0.1730 J 0.2770 Z 0.4130 19.50mm 0.7677
67 0.0320 43 0.0890 4.40mm 0.1732 7.10mm 0.2795 10.50mm 0.4134 25/32 0.7812
66 0.0330 2.30mm 0.0906 16 0.1770 K 0.2810 27/64 0.4219 20.00mm 0.7874
0.85mm 0.0335 2.35mm 0.0925 4.50mm 0.1772 9/32 0.2812 10.80mm 0.4252 51/64 0.7969
65 0.0350 42 0.0935 15 0.1800 7.20mm 0.2835 11.00mm 0.4331 20.50mm 0.8071
0.90mm 0.0354 3/32 0.0938 4.60mm 0.1811 7.30mm 0.2874 7/16 0.4375 13/16 0.8125
64 0.0360 2.40mm 0.0945 14 0.1820 L 0.2900 11.20mm 0.4409 21.00mm 0.8268
63 0.0370 41 0.0960 4.70 13 0.1850 7.40mm 0.2913 11.50mm 0.4528 53/64 0.8281
0.95mm 0.0374 2.45mm 0.0965 3/16 0.1875 M 0.2950 29/64 0.4531 27/32 0.8438
62 0.0380 40 0.0980 4.80 12 0.1890 7.50mm 0.2953 11.80mm 0.4646 21.50mm 0.8465
61 0.0390 2.50mm 0.0984 11 0.1910 19/64 0.2969 15/32 0.4688 55/64 0.8594
1.00mm 0.0394 39 0.0995 4.90mm 0.1929 7.60mm 0.2992 12.00mm 0.4724 22.00mm 0.8661
60 0.0400 38 0.1015 10 0.1935 N 0.3020 12.20mm 0.4803 7/8 0.8750
59 0.0410 2.60mm 0.1024 9 0.1960 7.70mm 0.3031 31/64 0.4844 22.50mm 0.8858
1.05mm 0.0413 37 0.1040 5.00mm 0.1969 7.80mm 0.3071 12.50mm 0.4921 57/64 0.8906
58 0.0420 2.70mm 0.1063 8 0.1990 7.90mm 0.3110 1/2 0.5000 23.00mm 0.9055
57 0.0430 36 0.1065 5.10mm 0.2008 5/16 0.3125 12.80mm 0.5039 29/32 0.9062
1.10mm 0.0433 7/64 0.1094 7 0.2010 8.00mm 0.3150 13.00mm 0.5118 59/64 0.9219
1.15mm 0.0453 35 0.1100 13/64 0.2031 O 0.3160 33/64 0.5156 23.50mm 0.9252
56 0.0465 2.80mm 0.1102 6 0.204 8.10mm 0.3189 13.20mm 0.5197 15/16 0.9375
3/64 0.0469 34 0.1110 5.20mm 0.2047 8.20mm 0.3228 17/32 0.5312 24.00mm 0.9449
1.20mm 0.0472 33 0.1130 5 0.2055 P 0.3230 13.50mm 0.5315 61/64 0.9531
1.25mm 0.0492 2.90mm 0.1142 5.30mm 0.2087 8.30mm 0.3268 13.80mm 0.5433 24.50mm 0.9646
1.30mm 0.0512 32 0.1160 4 0.2090 21/64 0.3281 36/64 0.5469 31/32 0.9688
55 0.0520 3.00mm 0.1181 5.40mm 0.2126 8.40mm 0.3307 14.00mm 0.5512 25.00mm 0.9843
1.35mm 0.0531 31 0.1200 3 0.2130 Q 0.3320 14.25mm 0.5610 63/64 0.9844

42
1 1.0000
WARRANTY INFORMATION

Jacobs chucks, chuck keys, toolholders, work holders and accessories, manufactured or distrib-
uted by The Jacobs Chuck Manufacturing Company and the Danaher Tool Group, are warranted to
be free from defects in materials or workmanship for one year from the date of purchase.

This warranty applies only to the first person who buys the products directly from a Jacobs prod-
ucts distributor representative. The Jacobs Chuck Manufacturing Company and the Danaher Tool
Group cannot be responsible for products which have been abused, misused, or modified. This
warranty does not apply to any parts, components or accessories not manufactured by The Jacobs
Chuck Manufacturing Company and the Danaher Tool Group.

If a Jacobs product proves defective within one year after purchase, simply return it to the place
from which it was purchased or to the nearest distributor of Jacobs products, transportation
charges prepaid. Enclose your name and address, a short description of the defect and proof of the
date of purchase. At its option, The Jacobs Chuck Manufacturing Company and
the Danaher Tool Group will replace the product free of charge or refund the full purchase price if
they find the product to be defective. The sole liability of The Jacobs Chuck Manufacturing
Company and the Danaher Tool Group and your exclusive remedy under this Warranty is limited to
repair or replacement of the defective product or to a full refund of its purchase price.

All replacement parts sales and new repair service for Jacobs High Precision Keyless Chucks are
available through our authorized service center: Angle Repair Service, Inc.
175 Angle Drive
Beckley, WV 25801
(304) 253-5279

There are no other warranties, express or implied, including those of merchantability or fitness for a
particular purpose, beyond those described above. In no event shall the liability of The Jacobs Chuck
Manufacturing Company and the Danaher Tool Group exceed the purchase price of the products, nor
shall The Jacobs Chuck Manufacturing Company and the Danaher Tool Group be liable for incidental,
consequential, or special damages, costs or expenses, excepting only the cost or expense of repair,
replacement or refund as described above.

PLEASE NOTE:
Without notice, The Jacobs Chuck Manufacturing Company and the Danaher Tool Group reserve
the right to change the design, material composition and dimensional specifications for all products
offered in this catalog.

43
Danaher Tool Group
P.O. Box 11011 McCormick Road
Suite 150
Hunt Valley, MD 21031

Phone: 800-866-5753
Fax: 800-234-0472

Catalog Number: 89074-54

Rev. 5/05
Printed in U.S.A.