SET-TRU Scroll Chucks - Lathe Department · 33 SET-TRUSCROLLCHUCKS SET-TRU Scroll Chucks QualityProducts • Partnership • IndustryExperts SET-TRU CHUCKS 4 and 6-Jaw SET-TRU Scroll

SET-TRU Scroll ChucksSE

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28 SET-TRU CHUCKS Toolmex Customer Service 508-653-8897 • 800-992-4766 • www.toolmex.com

• Toolmex SET-TRU Scroll Chucks can be used for all machining operationswhere universal chucks are used, along with applications where universalscroll chucks require tighter tolerances

• Outstanding accuracy, versatility and long life make Toolmex SET-TRU chucksinvaluable in the modern workshop and indispensable in the toolroom

Features of 6-Jaw SET-TRU Chucks:

• The 6 jaws grip firmly with less pressure and less distortion per jaw• Ideal for thin wall and second operation work• Eliminates the need for spring collets

SET-TRU Chuck Features and Benefits:

• Fine adjustment• Available with forged steel body or semi-steel body• 3 pinion design• 4 micro adjustment screws provide .0004" T.I.R. repeatability• 16", 20" and 25" diameter chucks with 3 jaws and 6 jaws use 8 micro

adjustment screws achieving extremely high gripping concentricity• Two piece top and master jaws are American Standard tongue and groove• 4" diameter chuck has 2 sets of solid jaws• Scrolls are forged and fully hardened with thread flanks ground on both

sides, then precisely balanced for longer life and higher accuracy• Each scroll is precisely balanced• Jaw teeth and guides on both sides are fully hardened and ground.

Hardened and ground bushings are pressed into the pinion seats.Pinions in 3 pinion models are hardened and ground

• Each chuck is balanced within fine limits (see page 26 of technicalreference pages for more information)

• Steel mounting plates are interchangeable with Toolmex SET-TRU chucks ofthe same size so that one chuck can be used on different spindles

• The life of your Toolmex chuck can be extended significantly through propermaintenance and must be cleaned on a regular basis as recommended

• For the best gripping results, use the Toolmex recommended chuck grease:Part Number 7-799-025

OutstandingAccuracy and Quality

Hardenedand GroundSurfaces

Steel BackplateFront View

ChuckBack View See pages 185-186 for more information

2, 3, 4, and 6-Jaw SET-TRU Scroll Chucks, 0.0004" T.I.R.

Order from Logan Actuator Co. - (815) 943-9500 - [email protected]

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SET-TRU Scroll Chucks

Quality Products • Partnership • Industry Experts SET-TRU CHUCKS

1. Chuck Body2. Back Cover3. Scroll Plate 7-887-5...4. Pinion 7-886-5...5. Pinion Half Ring 7-888-7...6. Pinion Sleeve 7-888-5...7. Hard Master Jaws 7-885-...8. Hard Top Jaws 7-883-...9. Grease Nipple10, 11 and 13. Back Cover Mounting Bolts12. Spindle Locating Pin - “A” Mount Only14. Spring Loaded Chuck Wrench 7-889-0...15 and 16. Hard Top Jaw Mounting Bolts 7-897-5...17. Chuck Mounting Bolts 7-897-7...18 and 20. Hex Keys 6-999-5...19. Fine Adjustment Screw 7-897-6...

See pages 23-25 for clamping ranges

BISON 2, 3, 4, and 6-Jaw SET-TRU Scroll Chucks, 0.0004" T.I.R.

ChuckDiaD

F E A1 AHoled

(max)H

2-PieceJaws

SolidJaws

Soft TopJaws** C

h

4" 3.2677 1.7717 – – 0.787 2.677 – 0.63 – 0.51

5" 4.252 2.1654 – – 1.378 2.362 1.575 0.787 – 0.59

6-1/4" 5.5118 3.3858 – – 1.654 2.677 1.71 1.26 1.697 0.67

8" 6.9291 4.3307 – – 2.165 3.071 1.77 1.142 1.776 0.71

10" 8.8188 5.7086 – – 2.992 3.504 2.05 1.339 2.071 0.79

12-1/2" 11.2598 7.0866 – – 4.055 3.819 2.24 1.693 2.24 0.79

15-3/4" 6.75 – 11.748 11.782 5.354 4.803 2.638 – – 0.87

20" 9.252 – 16.022 16.032 7.48 5.669 3.11 – – 1.18

25" 13 – 16.022 16.032 9.921 5.905 3.425 – – 1.18

Fine AdjustmentScrews N

Thread Qty

M10 x 1

4

M12 x 1*

M12 x 1

M18 x 1

8

Mounting BoltsM and T

Thread Qty

M8 x 1.25

3

M8 x 1.25

M10 x 1.5

M10 x 1.5

M12 x 1.75

M16 x 2

5/8 x 11

63/4 x 10

3/4 x 10

** For 2-jaw chucks only

Chuck Diameters: 15-3/4", 20", and 25"Chuck Diameters: 4" thru 12-1/2"



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Backplate and Chuck Mounting Principles for 15-3/4" through 25" Diameter Chucks

• The backplate’s outside diameter, d, is the same as chuck’s counterbore diameter, D• The clearance range between the chuck counterbore and backplate OD is from 0.0141" to 0.0236"

Backplate and Chuck Mounting Principles for 4" through 12-1/2" Diameter Chucks

• The backplate’s outside diameter, d, is the same as the chuck’s outside diameter, D• The clearance range between the chuck counterbore and backplate boss OD is from 0.0078" to 0.0129"

2, 3, 4, and 6-Jaw SET-TRU Scroll Chucks, 0.0004" T.I.R.

ChuckDia A B

(HB) C E T-slotLength

20" 0.9055 .5512 .2362 0.8268 4.51

25" 1.1811 .7087 .4724 1.0236 4.69

3-Jaw Chuck T-slot Dimensionsfor 20" and 25" Diameter Chucks Only

Chuck CounterboreBackplate Boss

Face of the chuck

Backplate Boss Chuck Counterbore


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2 and 3-Jaw SET-TRU Scroll Chucks, 0.0004" T.I.R.with Fine Adjustment, Forged Steel Body

BISON 3-Jaw Scroll Chucks with Two-Piece Hard Reversible Jaws

• Forged Steel Body• 3 Pinion Design

Each chuck is provided with:

• 1 Set of hard master jaws• 1 Set of hard top reversible jaws• 1 Chuck wrench• 1 Set of mounting bolts• 1 Set of fine adjustment screws• 2 Hex keys• Eye bolts for chuck sizes 15-3/4 and

larger

BISON 3-Jaw Scroll Chucks with Hard Solid Jaws



• 1 Set of hard solid ID jaws• 1 Set of hard solid OD jaws• 1 Chuck wrench• 1 Set of mounting bolts• 1 Set of fine adjustment screws• 1 hex key

ChuckDia

PartNumber

HoleDia

RPMmax

Wtlbs

5" 7-866-0500 1.378 3800 11

6-1/4" 7-866-0600 1.654 3500 21

8" 7-866-0800 2.165 3100 35

10" 7-866-1000 2.992 2700 59

12-1/2" 7-866-1200 4.055 2200 105

15-3/4" 7-866-1600 5.354 1800 201

20" 7-866-2000 7.480 1200 377

25" 7-866-2500 9.921 1000 630

ChuckDia

PartNumber

HoleDia

RPMmax

Wtlbs

4" 7-866-8040 .787 4200 7.3

5" 7-866-8050 1.378 3800 11

6-1/4" 7-866-8060 1.654 3500 21

8" 7-866-8080 2.165 3100 35

10" 7-866-8100 2.992 2700 59

12-1/2" 7-866-8120 4.055 2200 105

BISON 2-Jaw Scroll Chucks with Soft Top Reversible Jaws



• 1 Set of hard master jaws• 1 Set of soft top reversible jaws• 1 Chuck wrench• 1 Set of mounting bolts• 1 Set of fine adjustment screws• 2 Hex keys

ChuckDia

PartNumber

HoleDia

RPMmax

Wtlbs

8" 7-827-0800 2.165 2500 37

10" 7-827-1000 2.992 2000 65

Type 3165

Type 3565

Type 3564



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Precision Accuracy SET-TRU 0.01mm/0.0005" T.I.R.

3-Jaw Scroll Chucks2-Piece Hard Reversible Jaws

• Semi-steel body• 3 pinion design, hardened and ground


• 1 Set of hard master jaws• 1 Set of hard top reversible jaws• 1 Self-ejecting chuck wrench• 1 Set of mounting bolts• 1 Set of fine adjustment screws• 2 Hex keys

For best gripping results, use the TMX recommended chuck grease: Part Number 7-799-025

See page 23 for clamping ranges

Chuck Dia D Part NumberF E Hole

Dia d H h CRPMmax

MountingBolts M

FineAdjustment

Screws N

inch mm 3-Jaw 3-Jaw 6-Jaw Thread Qty Thread Qty

6-1/4" 160 3-866-0600Z 5.5118 3.3858 1.7717 2.9528 1.7323 0.7283 3000 0 M10x1.5 3 M18x1 4

8" 200 3-866-0800Z 6.9291 4.3307 2.1654 3.3465 1.8504 0.7480 2500 0 M10x1.5 3 M18x1 4

10 250 3-866-1000Z 8.8189 5.7087 3.1496 3.5433 2.1457 0.7874 2000 0 M12x1.75 3 M18x1 4

12-1/2" 317 3-866-1200Z 11.2598 7.0866 4.0945 3.9370 2.3031 0.7874 1500 0 M16x2 3 M18x1 4

15-3/4" 400 3-866-1600Z 6.7500 11.7820 5.3543 4.2520 2.6378 0.8268 1000 0 5/8"-11 6 M18x1 8


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4 and 6-Jaw SET-TRU Scroll Chucks, 0.0004" T.I.R.with Fine Adjustment, Forged Steel Body, 2 and 3 Pinion Design

BISON 6-Jaw Scroll Chucks with Two-Piece Hard Reversible JawsEach chuck is provided with:

• 1 Set of hard master jaws• 1 Set of hard top reversible jaws• 1 Chuck wrench• 1 Set of mounting bolts• 1 Set of fine adjustment screws• 2 Hex keys• Eye bolts (16” to 25” only)

BISON 6-Jaw Scroll Chucks with Hard Solid JawsEach chuck is provided with:

• 1 Set of hard solid ID jaws• 1 Set of hard solid OD jaws• 1 Chuck wrench• 1 Set of mounting bolts• 1 Set of fine adjustment screws• 1 hex key

ChuckDia

PartNumber

HoleDia

RPMmax

Wtlbs

5" 7-868-0500 1.378 3000 14

6-1/4" 7-868-0600 1.654 2500 25

8" 7-868-0800 2.165 2200 42

10" 7-868-1000 2.992 1900 78

12-1/2" 7-868-1200 4.055 1500 128

15-3/4" 7-868-1600 5.354 1300 250

20" 7-868-2000 7.480 800 397

25" 7-868-2500 9.921 700 647

ChuckDia

PartNumber

HoleDia

RPMmax

Wtlbs

6-1/4" 7-847-0600 1.654 2500 22

8" 7-847-0800 2.165 2200 37

10" 7-847-1000 2.992 1900 65

12-1/2" 7-847-1200 4.055 1500 119

ChuckDia

PartNumber

HoleDia

RPMmax

Wtlbs

4" 7-868-8040 .787 4000 9.7

5" 7-868-8050 1.378 3000 14

6-1/4" 7-868-8060 1.654 2500 25

8" 7-868-8080 2.165 2200 42

10" 7-868-8100 2.992 1900 78

12-1/2" 7-868-8120 4.055 1500 128

Type 3765

Type 3865

Type 3864

BISON 4-Jaw Scroll Chucks with Two-Piece Hard Reversible JawsEach chuck is provided with:

• 1 Set of hard master jaws• 1 Set of hard top reversible jaws• 1 Chuck wrench• 1 Set of mounting bolts• 1 Set of fine adjustment screws• 2 Hex keys



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.

ChuckDia

PartNumber

TaperSize A D E F C H

MountingHoles

GK B1 B

SpindleMounting

BoltsN

No. ofBolts

Wtlbs

5"

7-874-054 A4 4.92 2.500

1.378

3.252

2.164 4.252 M8 x 1.25

.87

.55

1.42 7/16 - 14

4

4.8

7-874-055 A5 4.92 3.2505 4.126 .87 1.42 7/16 - 14 4.2

7-874-056 A6 6.30 4.1880 5.252 .53 1.89 1/2 - 13 9.1

6-1/4"7-874-065 A5

6.303.2505

1.6544.126

3.385 5.512 M10 x 1.5.82

.691.45 7/16 - 14

46.77

7-874-066 A6 4.1880 5.252 .82 1.65 1/2 - 13 6.97

8"7-874-085 A5

7.873.2505

2.1654.126

4.330 6.929 M10 x 1.5.62

.661.428 7/16 - 14

49.3

7-874-086 A6 4.1880 5.252 1.10 1.77 1/2 - 13 13.5

10"

7-874-105 A5

9.84

3.2505

2.992

4.126

5.708 8.819 M12 x 1.75

.74

.74

1.49 7/16 - 14

4

17.3

7-874-106 A6 4.1880 5.252 .74 1.49 1/2 - 13 17.3

7-874-108 A8 5.5007 6.748 1.06 1.81 5/8 - 11 20.2

12-1/2"

7-874-126 A6

12.40

4.1880

4.055

5.252

7.076 11.260 M16 x 2

.74

.74

1.49 1/2 - 13

4

27.3

7-874-128 A8 5.5007 6.748 1.06 1.81 5/8 - 11 35.7

7-874-129 A11 7.7507 9.252 1.42 2.17 3/4 - 10 41.20

15-3/4"

7-874-166 A6

11.75

4.1880 4.055 5.252

– 6.748 5/8 - 111.38 – 1.38 1/2 - 13

6

31.4

7-874-168 A8 5.5007 5.346 6.748 1.14 – 1.46 5/8 - 11 28.8

7-874-169 A11 7.7507 5.354 9.252 1.06 – 1.89 3/4 - 10 35.8

20"

7-874-208 A8

16.02

5.5007 5.346 6.748

– 9.252 3/4 - 101.42 – 1.42 5/8 - 11

6

69

7-874-209 A11 7.7507 7.590 9.252 1.18 – 1.42 3/4 - 10 61

7-874-215 A15 11.2505 7.480 13.000 1.18 – 2.05 7/8 - 9 76

25"

7-874-258 A8 16.02 5.5007 5.346 6.748

– 13.0003/4 - 10

1.42 – 1.42 5/8 - 11

6

69

7-874-259 A11 16.02 7.7507 7.590 9.252 1.42 – 1.42 3/4 - 10 61

7-874-260 A15 16.02 11.25059.921

13.000 2.05 – 2.05 7/8 - 9 76

7-874-265 A20 21.00 16.2518 18.252 1 - 8 2.76 – 2.76 1 - 8 90

G

Type AChuck Diameters: 15-3/4" to 25"

Chuck Diameters: 5" to 12-1/2"

BISON Fully Machined Type A Steel Backplates for SET-TRU Chucks• Designed to Mount on A1 and A2 American Standard Spindles

Type 8215


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Fully Machined Type A Steel Backplatesfor Precision Accuracy SET-TRU Chucks

• Designed to mount on A1 and A2 American Standard spindles

Type A

Spindle Nose

G

ChuckDia

PartNumber

TaperSize A D E F C H

ChuckMountingHoles G

K B1 BSpindle

MountingBolts N

BoltsQty

Wtlbs

6-1/4" 3-874-065 A5 6.2992 3.252 1.6535 4.1260 3.3858 5.5118 M10x1.5 0.8268 0.6299 1.4567 7/16"-14 4 6.8

8"3-874-085 A5

7.8740 4.189 2.16544.1260

4.3307 6.9291 M10x1.50.6299

0.74801.2992 7/16"-14

49.3

3-874-086 A6 5.2520 1.1024 1.7717 1/2"-13 13.5

10"3-874-105 A5

9.84253.252

2.99214.1260

5.7087 8.8189 M12x1.75 0.7480 0.7480 1.49617/16"-14

417.3

3-874-106 A6 4.189 5.2520 1/2"-13

12-1/2"3-874-126 A6

12.40164.189

4.05515.2520

7.0866 11.2598 M16x20.7480

0.74801.4961 1/2"-13

427.3

3-874-128 A8 5.500 6.7480 1.0630 1.8110 5/8"-11 35.7



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Type D

ChuckDia

PartNumber

TaperSize

StudsA F D E C H

MountingHoles

GB1 B Wt

lbsQty Dia

4"7-875-043 D1-3 3 9/16" 3.94 2.78 2.1250

.787 1.771 3.268 M8 x 1.25 .471.50 3.31

7-875-044 D1-4 3 5/8" 4.25 3.25 2.5005 1.57 3.97

5"

7-875-053 D1-3 3 9/16" 4.92 2.78 2.1250

1.378 2.164 4.252 M8 x 1.25 .55

1.57 5.95

7-875-054 D1-4 3 5/8" 4.92 3.25 2.5005 1.54 5.73

7-875-055 D1-5 6 3/4" 5.31 4.13 3.2503 1.73 6.92

7-875-056 D1-6 6 7/8" 7.12 5.25 4.1878 1.89 13.06

7-875-058 D1-8 6 1" 8.86 6.45 5.50075 2.09 15.00

6-1/4"

7-875-063 D1-3 3 9/16"

6.30

2.78 2.1250

1.654 3.385 5.512 M10 x 1.5 .63

1.81 10.807-875-064 D1-4 3 5/8" 3.25 2.5005 1.81 9.92

7-875-065 D1-5 6 3/4" 4.13 3.2503 1.81 9.89

7-875-066 D1-6 6 7/8" 6.69 5.25 4.1878 1.97 13.00

7-875-068 D1-8 6 1” 6.30 6.75 5.50075 1.54 25

8"

7-875-083 D1-3 3 9/16"

7.87

2.78 2.1250 2.024

4.330 6.929 M10 x 1.5 .67

1.30 10.36

7-875-084 D1-4 3 5/8" 3.25 2.5005

2.165

1.30 10.36

7-875-085 D1-5 6 3/4" 4.13 3.2503 1.85 15.87

7-875-086 D1-6 6 7/8" 5.25 4.1878 2.01 17.64

7-875-088 D1-8 8 1" 8.86 6.75 5.50075 2.24 20.00

10"

7-875-104 D1-4 3 5/8"

9.84

3.25 2.6005 2.382

5.708 8.819 M12 x 1.75 .75

1.50 18.84

7-875-105 D1-5 6 3/4" 4.13 3.2510 3.130 1.50 17.64

7-875-106 D1-6 6 7/8" 5.25 4.1878 2.992 2.09 28.44

7-875-108 D1-8 6 1" 6.75 5.50075 2.992 2.36 32.41

12-1/2"

7-875-126 D1-6 6 7/8"

12.40

5.25 4.1878

4.055 7.086 11.260 M16 x 2 .75

1.50 28.44

7-875-128 D1-8 6 1" 6.75 5.50075 2.24 47.84

7-875-129 D1-11 6 1-3/16" 9.25 7.75055 2.52 52.91

15-3/4"

7-875-166 D1-6 6 7/8"

11.75

5.25 4.1878 4.055

– 6.748 5/8 - 11 –

1.38 29.0

7-875-168 D1-8 6 1" 6.75 5.500755.358

1.50 27.2

7-875-169 D1-11 6 1-3/16" 9.25 7.75055 1.89 26.8

20"

7-875-208 D1-8 6 1"

16.02

6.75 5.50075 5.358

– 9.252 3/4 - 10 –

1.50 74

7-875-209 D1-11 6 1-3/16" 9.25 7.75055 7.590 1.73 78

7-875-215 D1-15 6 1-3/8" 13.00 11.2505 7.480 2.05 83

25"7-875-258 D1-8 6 1"

16.026.75 5.50075 5.358

– 13.071 3/4 - 10 –1.50 74

7-875-259 D1-11 6 1-3/16" 9.25 7.75055 7.590 1.73 78

Chuck Diameters: 15-3/4" to 25"Chuck Diameters: 4" to 12-1/2"

BISON Fully Machined Type D Steel Backplates for SET-TRU Chucks• Type D1 American Standard Camlock Spindles

Type 8245


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Type D

Fully Machined Type D1 Steel Backplatesfor Precision Accuracy SET-TRU Chucks

• Type D1 American Standardcamlock spindles

Spindle Nose

ChuckDia

PartNumber

TaperSize

StudDia

No. ofStuds A F D E C H

ChuckMountingHoles G

B1 B Wtlbs

5"3-875-054 D1-4 5/8 3 4.9213 3.2520 2.5000

1.3780 2.1654 4.2520 M8x1.25 0.55121.5354 5.7

3-875-056 D1-6 7/8 6 7.1260 5.2520 4.1890 1.8898 13

6-1/4"3-875-063 D1-3 9/16

3 6.29922.7795 2.1260

1.6535 3.3858 5.5118 M10x1.5 0.62991.8110 10.8

3-875-064 D1-4 5/8 3.2520 2.5000 9.9

8"

3-875-084 D1-4 5/8 3

7.8740

3.2520 2.5000

2.1654 4.3307 6.9291 M10x1.5 0.6693

1.2992 10.4

3-875-085 D1-5 3/46

4.1339 3.2520 1.8504 15.9

3-875-086 D1-6 7/8 5.2520 4.1890 2.0079 17.6

10"3-875-106 D1-6 7/8

6 9.84255.2520 4.1890

2.9921 5.7087 8.8189 M12x1.75 0.74802.0866 28.4

3-875-108 D1-8 1 6.7520 5.5000 2.3622 32.4

12-1/4"3-875-126 D1-6 7/8

6 12.40165.2520 4.1890

4.0551 7.0866 11.2598 M16x2 0.74801.4961 28.4

3-875-128 D1-8 1 6.7520 5.5000 2.2441 47.8



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ChuckDiaD

PartNumber

Threadd G E F L C K M No. of

BoltsWtlbs

4"7-876-041 1-10 UNS-2B 1.0150

1.771 3.268 1.54 0.47 .51 M8 x 1.25 34.85

7-876-042 1-1/2 - 8 UN-2B 1.5150 5.29

5"

7-876-0515 1-1/8 - 12W 1.2496

2.164 4.252

1.54

0.55 .51 M8 x 1.25 3

–

7-876-052 1-1/2 - 8 UN-2B 1.5150 6.61

7-876-054 2-3/16 - 10 Hardinge 2.1889 2.44 7.05

7-876-056 2-1/4 - 8 UN-2B 2.260 1.54 6.8

6-1/4"

7-876-062 1-1/2 - 8 UN-2B 1.5150

3.385 5.512

1.50

0.63 .59 M10 x 1.5 3

7.05

7-876-064 2-3/16 - 10 Hardinge 2.1889 1.61 7.50

7-876-066 2-1/4 - 8 UN-2B 2.2600 1.75 7.94

8"

7-876-082 1-1/2 - 8 UN-2B 1.5150

4.330 6.929

1.50

0.67 .59 M10 x 1.5 3

9.92

7-876-083 2-1/4 - 8 UN-2B 2.2600 1.75 11.46

7-876-084 2-3/8 - 6 UN-2B 2.3850 2.00 13.89

10" 7-876-104 2-3/8 - 6 UN-2B 2.3850 5.708 8.819 2.00 0.74 .75 M12 x 1.75 3 30.0

12-1/2" 7-876-124 2-3/8 - 6 UN-2B 2.3850 7.086 11.280 2.00 1.00 .94 M16 x 2 3 50.0

BISON Fully Machined Threaded Steel Backplates for SET-TRU Chucks

Threaded

Type 8285


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.

ChuckDia

PartNumber

TaperSize A D E C H F B1 B G No. of

StudsWtlbs

6-1/4" 7-920-066 C-6 6.30 4.188 1.65 3.385 5.512 5.252 .63 1.26 M10 x 1.5 4 6.0

8" 7-920-086 C-6 7.87 4.188 2.17 4.330 6.929 5.252 .67 1.57 M10 x 1.5 4 12.0

10" 7-920-106 C-6 9.84 4.188 2.99 5.708 8.819 5.252 .75 1.69 M12 x 1.75 4 28.0

12-1/2"7-920-126 C-6

12.44.188 4.06

7.086 11.265.252

.75 1.69 M16 x 2 422.7

7-920-128 C-8 5.501 4.06 6.748 48.0

15-3/4"7-920-168 C-8

11.755.501 5.35

– 6.756.75

– 1.46 5/8 - 114 27

7-920-169 C-11 7.751 4.72 9.25 6 25

20"7-920-208 C-8

16.025.501 5.35

– 9.256.75

– 1.42 3/4 - 104 70

7-920-209 C-11 7.751 7.57 9.25 6 66

25" 7-920-259 C-11 16.02 7.751 7.57 – 13.0 9.25 – 1.42 3/4 - 10 6 66

Chuck Diameters: 15-3/4" to 25"Chuck Diameters: 5" to 12-1/2"Type C

BISON Fully Machined Type C Steel Backplates for SET-TRU Chucks• DIN 55027

Type 8235



T-TR

UBACKPL

ATE

S


ChuckDia

PartNumber

TaperSize D Thread

T - UNS3 G d E F M J C L Wtlbs

5" 7-879-9051 L00 4.92 3-3/4 - 6 2.750 2.20 2.164 4.252 M10 x 1.5 – 0.55 – 7.5

6-1/4"7-879-9061 L00

6.303-3/4 - 6 2.750 2.20

3.385 5.51 M10 x 1.5 0.79 0.63 2.569.0

7-879-9062 L0 4-1/2 - 6 3.250 2.60 9.5

8"

7-879-9081 L00

7.87

3-3/4 - 6 2.750 2.20

4.330 6.93 M10 x 1.5 0.79 0.672.56

15.0

7-879-9082 L0 4-1/2 - 6 3.250 2.60 15.4

7-879-9083 L1 6 - 6 4.125 3.35 2.99 16.5

10"

7-879-9101 L00

9.84

3-3/4 - 6 2.750 2.20

5.708 8.82 M12 x 1.75 0.91 0.752.76

25.0

7-879-9102 L0 4-1/2 - 6 3.250 2.60 26.1

7-879-9103 L1 6 - 6 4.125 3.35 2.99 37.0

12-1/2"

7-879-9122 L0

12.40

4-1/2 - 6 3.250 2.60

7.086 11.26 M16 x 2 0.91 0.75

2.7637.0

7-879-9123 L1 6 - 6 4.125 3.35 2.99

7-879-9124 L2 7-3/4 - 5 5.250 4.29 3.50 38.8

15-3/4"

7-879-9163 L1

11.75

6 - 6 4.125 3.35

– 6.75 5/8 - 11 0.87 –

2.95 34.2

7-879-9164 L2 7-3/4 - 5 5.250 4.29 3.46 45.4

7-879-9165 L3 10-3/8 - 4 6.500 5.43 3.94 67.2

20" 7-879-9264 L2 16.02 7-3/4 - 5 5.250 4.29 – 9.25 3/4 - 10 1.18 – 3.66 60.2

BISON Fully Machined Type L Steel Backplates for SET-TRU Chucks

Type LChuck Diameters: 15-3/4" thru 25"Chuck Diameters: 5" thru 12-1/2"

Type 8255


41

SET-TRU

CHUCK

BACKPLA

TESAND

BASE

PLATES



BISON Chuck Base Plates for Rotary Tables• Perfect for all rotary tables with 3/6 and 4/8 T-Slots• Designed for use with BISON SET-TRU chucks• Base plates are supplied with four mounting bolts

with T-nuts and one MT pin• See page 187 for more information

ChuckDia

Base Plate

PartNumber

Wtlbs

5" 7-872-605 3.9

6-1/4" 7-872-606 11.5

8" 7-872-608 16.8

10" 7-872-610 27.4

12-1/2" 7-872-612 46.3

15-3/4" 7-872-616 40.0

20" 7-872-620 77.0

BISON Chuck Base Plates for Milling Machine Tables• Perfect for all milling machine tables• Designed for use with BISON SET-TRU chucks• See page 187 for more information

ChuckDia

5CBackplate

Part Number

3-JawChucks

6-JawChucks OAL Chuck Body

Height**

ClampingRange

Min-Max

4" 7-912-304 7-866-8040* 7-868-8040* 7.29 2.68 .12 - 3.66

5" 7-912-305 7-866-0500 7-868-0500 7.12 2.362 .12 - 4.92

6-1/4" 7-912-306 7-866-0600 7-868-0600 7.95 2.677 .12 - 6.3

* 4" solid jaws only** Chuck dimensions can be found on page 29

Type 8288

Type 9452

Back View

BISON Fully Machined 5C Steel Back Platesfor 3 and 6-Jaw SET-TRU Chucks

• Backplates and SET-TRU chucks are sold separately

MT Pin

PartNumber MT

7-872-932 2

7-872-933 3

7-872-933 3

7-872-933 3

7-872-933 3

7-872-934 4

7-872-935 5

ChuckDia

Base Plate

PartNumber

Wtlbs

6-1/4" 7-630-606 10.3

8" 7-630-608 16.2

10" 7-630-610 25.0

12-1/2" 7-630-612 35.5

Type 8298



T-TR

USP

ARE

PARTS


ChuckDia

2-Jaw 3-Jaw 4-Jaw 6-JawPart Number

5" – 7-885-305 – 7-885-6056-1/4" 7-885-206 7-885-306 7-885-406 7-885-606

8" 7-885-208 7-885-308 7-885-408 7-885-60810" 7-885-210 7-885-310 7-885-410 7-885-610

12-1/2" 7-885-212 7-885-312 7-885-412 7-885-61215-3/4" – 7-885-316 – 7-885-616

20" – 7-885-320 – 7-885-62025" – 7-885-325 – 7-885-625

ChuckDia

K H G F J S L D E B OALA

ThreadM

2-Jaw 3-Jaw 4-Jaw 6-Jawinches Wt of Set – lbs

5" 5/8 57/64.4996 5/16

.1575 .1260

.4724.3150 .3150 .7874

2.1259 5/16 - 18 – 0.93 – 1.96-1/4" 3/4 1-1/8

.55112.5590

3/8 - 16.80 1.20 1.60 2.40

8" 7/8 1-3/8 .3543 .3937 .9843 3.1102 1.40 2.10 2.80 4.2010" 1-1/16 1-9/16

.7496 1/2

.6299.4331

.47241.1024 3.6220

1/2 - 132.13 3.20 4.27 6.40

12-1/2" 1-1/4 1-7/8 .5000 1.2598 4.3307 3.40 5.10 6.80 10.2015-3/4"

1-1/2 2-1/4 .2835 .2480.8661 .5906

.55121.4173 5.1181 5/8 - 11 – 7.30 – 14.60

20"1.2598 .6299

1.5748 6.53513/4 - 10

– 14.4 – 28.8025" 1.9685 8.2677 – 27.1 – 44.20

BISON Hard Master Jaws for 2, 3, 4, and 6-Jaw SET-TRU Chucks• American Standard Tongue and Groove Jaws• Sold in sets

5" to 10" Diameters 20" Diameter 25" to 32" Diameters12" and 16" Diameters

3 Piece Set 6 Piece Set

All solid jaws and master jaws are manufactured to Bison’srigid specifications

ChuckDia

PartNumber K H G F J L D E B A S Thread

M C Wtlbs

6-1/4" 3-885-306 0.0294 1.12600.4996 0.3126

0.1575

0.6299 0.3543

0.3937

0.7874 2.5591

0.1181

3/8"-160.0511 0.08

8" 3-885-308 0.0344 1.37990.7087

0.3937 0.9843 3.1496 0.0543 0.14

10" 3-885-310 0.0419 1.56690.7496 0.5000

0.4724 1.1024 3.74021/2"-13

0.0589 0.22

12-1/2" 3-885-312 0.0492 1.8740 0.8268 0.5315 0.5118 1.2598 4.4882 0.0666 0.35

Hard Master Jaws

• American Standard tongue and groove jaws• Sold in 3 piece sets


43

SET-TRU

SPARE

PARTS



ChuckDia M H G J K D E F N C B OAL

A O P3-Jaw 4-Jaw 6-Jaw

Wt of Set lbs5" 5/8 57/64

.4996.35 .59

.3129

.157

.1260

.315 1.516 .866 2.205 .57 1.38 0.93 – 1.906-1/4" 3/4 1-1/8

.43 .71.335 1.634 .984 2.638 .71 1.63 1.20 1.60 2.40

8" 7/8 1-3/8 .374 1.713 1.063 3.174 .85 2.01 2.10 2.80 4.2010" 1-1/16 1-9/16

.7496

.55 .78

.5004

.472 2.023 1.280 3.740 .96 2.32 3.20 4.27 6.4012-1/2" 1-1/4 1-7/8 .512 2.165 1.457 4.331 1.04 2.68 5.10 6.80 10.2015-3/4"

1-1/2 2-1/4.71 1.0

.2480.532 2.539 1.654

5.0001.06 3.01 7.30 – 14.60

20".87 1.3

.689 2.933 1.654 1.97 3.46 14.40 – 28.8025" .827 3.228 2.047 2.01 3.50 27.10 – 44.20

ChuckDia

3-Jaw 3-JawEnhanced Serration

4-Jaw 6-Jaw

Part Number5" 7-883-305 – – 7-883-605

6-1/4" 7-883-306 – 7-883-406 7-883-6068" 7-883-308 – 7-883-408 7-883-60810" 7-883-310 7-883-3100 7-883-410 7-883-610

12-1/2" 7-883-312 7-883-3120 7-883-412 7-883-61215-3/4" 7-883-316 7-883-3160 – 7-883-616

20" 7-883-320 7-883-3120 – 7-883-62025" 7-883-325 7-883-3250 – 7-883-625

BISON Hard Top Jaws for 2, 3, 4, and 6-Jaw Chucks• American Standard Tongue and Groove Jaws• Sold in sets

3 Piece Set 6 Piece Set

Jaw mounting bolts canbe found on page 48

Hard Top Jaws for 3-Jaw Scroll Chucks

• American Standard tongue and groove jaws• Sold in 3 piece sets• TMX hard top jaws are interchangeable

with Bison hard top jaws

ChuckDia

PartNumber M H G J K L D E F N1 N2 C B A O P Wt

lbs

6-1/4" 3-883-306 0.7480 1.12600.4996 0.4173 0.6496

0.43310.3126

0.15750.1181

0.3150 0.3543 1.6142 0.9843 2.6378 0.7047 1.6063 0.12

8" 3-883-308 0.8740 1.3799 0.5118 0.3543 0.3937 1.7717 1.0630 3.1496 0.8465 2.0079 0.16

10" 3-883-310 1.0630 1.5669

0.7496

0.5394 0.8268 0.5512

0.5000

0.4528 0.4921 2.0276 1.2992 3.8189 0.9724 2.3228 0.28

12-1/2" 3-883-312 1.2500 1.8740 0.5394 0.8268 0.5906 0.4921 0.5315 2.1654 1.4567 4.3307 1.0354 2.6811 0.41

15-3/4" 3-883-316 1.5000 2.2500 0.6890 1.0236 0.7283 0.2362 0.5315 0.5709 2.5394 1.6535 5.0000 0.9567 2.9724 0.61



T-TR

USP

ARE

PARTS


ChuckDia

3-Jaw 4-Jaw 6-Jaw C L B F E N P O Wt of Set - lbs

Part Number inches 3-Jaw 4-Jaw 6-Jaw

4" 7-881-304 – 7-881-604 1.2598 1.6535 .5906 .2362 .2362 .2756 1.063 .433 .58 – 1.16

5" 7-881-305 – 7-881-605 1.5748 2.0079 .7874 .3150 .3150 .3150 1.319 .512 1.2 – 2.4

6-1/4" 7-881-306 7-881-406 7-881-606 2.0866 2.7559 .7874 .3150 .3150 .3937 1.772 .748 2.4 3.2 4.8

8" 7-881-308 7-881-408 7-881-608 2.1260 3.3465 .9843 .3543 .3937 .4724 2.244 .906 3.2 4.3 6.5

10" 7-881-310 7-881-410 7-881-610 2.4803 4.1339 1.1024 .4331 .4724 .5512 2.736 1.102 5.2 7.0 10.

12-1/2" 7-881-312 7-881-412 7-881-612 2.8740 4.9213 1.2598 .5000 .4724 .7087 3.268 1.358 8.7 12 18

BISON ID Hard Solid Jaws for 3, 4, and 6-Jaw Chucks• Sold in sets

ID Hard Solid Jaws for 3-Jaw Chucks

• Sold in 3 piece sets

Chuck Dia ID Jaws L B H h

6-1/4" 3-881-306 2.756 0.787 2.126

0.47248" 3-881-308 3.347 0.984 2.402

10" 3-881-310 4.134 1.102 2.717

12-1/2" 3-881-312 4.921 1.260 2.9530.7087

15-3/4" 3-881-316 5.709 1.417 3.622


45

SET-TRU

SPARE

PARTS



ChuckDia

3-Jaw 4-Jaw 6-Jaw C L B F E N P O Wt of Set - lbs

Part Number inches 3-Jaw 4-Jaw 6-Jaw

4" 7-880-304 – 7-880-604 1.2598 1.6535 .5906 .2362 .2362 .2756 1.063 .433 .58 – 1.16

5" 7-880-305 – 7-880-605 1.5748 2.0079 .7874 .3150 .3150 .3150 1.319 .512 1.2 – 2.4

6-1/4" 7-880-306 7-880-406 7-880-606 2.0866 2.7559 .7874 .3150 .3150 .3937 1.772 .748 2.4 3.2 4.8

8" 7-880-308 7-880-408 – 2.1260 3.3465 .9843 .3543 .3937 .4724 2.244 .906 3.2 4.3 6.5

10" 7-880-310 7-880-410 7-880-610 2.4803 4.1339 1.1024 .4331 .4724 .5512 2.736 1.102 5.2 7.0 10.

12-1/2" 7-880-312 7-880-412 7-880-612 2.8740 4.9213 1.2598 .5000 .4724 .7087 3.268 1.358 8.7 12 18

BISON OD Hard Solid Jaws for 3, 4, and 6-Jaw Chucks• Sold in sets

OD Hard Solid Jaws for 3-Jaw Chucks

• Sold in 3 piece sets

Chuck Dia OD Jaws L B H h

6-1/4" 3-880-306 2.756 0.787 2.126

0.47248" 3-880-308 3.347 0.984 2.402

10" 3-880-310 4.134 1.102 2.717

12-1/2" 3-880-312 4.921 1.260 2.9530.7087

15-3/4" 3-880-316 5.709 1.417 3.622



T-TR

USP

ARE

PARTS


ChuckDia A

B3, 4, and6-Jaw

B2-Jaw C D E F G H I J K

BoltSizeM

2-JawWt per Pc

lbs

3, 4, and6-Jaw

Wt per Pclbs

5" 2.520 0.866 – 1.520

.3129

0.5910 1-1/4

.500

1.000

.1260.283

– 5/16 - 18 – .66

6-1/4" 3.071 1.0001.575

1.634 0.8386 1-1/2 1.339 .1183/8 - 16

1.40 1.01

8" 3.543 1.063 1.713 0.9488 1-3/4 1.575 .197 2.00 1.43

10" 4.173 1.280 1.850 2.028

.5000

1.0827 2-1/8

.750

1.772 .3151/2 - 13

3.30 2.54

12-1/2" 4.724 1.457 2.047 2.165 1.2087 2-1/2 2.087

.2480

.394 4.60 3.53

15-3/4" 5.512 1.654 – 2.539 1.3443

3 2.480 .406

.512 5/8 - 11 – 4.85

20" 5.512 1.654 – 2.9331.3543

–3/4 - 10

– 5.29

25" 6.299 2.047 – 3.288 – – 9.26

ChuckDia

2-Jaw 3 and 4-Jaw 6-Jaw

Part Number

5" – 7-884-305 –

6" 7-884-206 7-884-306 7-884-606

8" 7-884-208 7-884-308 7-884-608

10" 7-884-210 7-884-310 7-884-610

12" 7-884-212 7-884-312 7-884-612

16" – 7-884-316 7-884-616

20" – 7-884-320 –

25" – 7-884-325 –

BISON Soft Top Jaws for 2, 3, 4, and 6-Jaw Chucks• American Standard Tongue and Groove Jaws• Sold by piece

For 2, 3 and 4-Jaw Chucks For 6-Jaw Chucks

ChuckDia

3-Jaw 4-Jaw C L B F E Wt of Set - lbs

Part Number inches 3-Jaw 4-Jaw

4" 7-882-304 – 1.2598 1.6535 .5906 .2362 .2362 .86. –

5" 7-882-305 – 1.5748 2.0079.7874 .3150 .3150

1.7 –

6-1/4" 7-882-306 7-882-406 2.0866 2.7559 3.3 4.4

8" 7-882-308 7-882-408 2.1260 3.3465 .9843 .3543 .3937 5.3 7.1

10" 7-882-310 7-882-410 2.4803 4.1339 1.1024 .4331 .4724 9.0 12

12-1/2" 7-882-312 7-882-412 2.8740 4.9213 1.2598 .5000 .4724 13 17

BISON Soft Solid Jaws for 3 and 4-Jaw Chucks• Sold in sets


47

SET-TRU

SPARE

PARTS



ChuckDia

Scroll

PartNumber D H Wt

lbs

4" 7-887-304 2.74 0.49 0.34

5" 7-887-505 3.7 0.63 0.84

6" 7-887-506 4.88 0.83 2.03

8" 7-887-508 6.24 0.94 3.62

10" 7-887-510 7.82 1.1 4.54

12" 7-887-512 10.1 1.2 10.2

16" 7-887-516 12.9 1.3 22.7

20" 7-887-520 16.4 1.2 36.4

25" 7-887-525 21.3 1.6 66.0

Half Ring

PartNumber D

7-888-904* –

7-888-705 1.52

7-888-706 1.72

7-888-708 1.85

7-888-710 1.94

7-888-712 2.17

7-888-716 2.42

7-888-720 2.76

7-888-725 2.95

Pinion Sleeve

PartNumber ID

– –

7-888-505 0.98

7-888-506 1.1

7-888-508 1.2

7-888-510 1.4

7-888-512 1.5

7-888-516 1.7

7-888-5202

7-888-525

Wrench**

PartNumber

SquareSize

7-889-0050.35

7-889-005

7-889-0080.43

7-889-008

7-889-0120.55

7-889-012

7-889-016 0.67

7-889-0250.75

7-889-025

Pinion

PartNumber D H Wt

lbs

7-886-3040.98

1.4 0.12

7-886-505 1.44 0.13

7-886-506 1.1 1.57 0.18

7-886-508 1.2 1.99 0.37

7-886-510 1.4 2.36 0.44

7-886-512 1.5 2.85 0.71

7-886-516 1.7 3.66 1.3

7-886-5202

4.45 2.1

7-886-525 5.24 2.5

BISON Spare Parts for 2, 3, 4, and 6-Jaw Chucks with Forged Steel Body

* Pinion retaining screw** Wrenches are spring loaded for the operator’s safety

Removal of the spring is not recommended and may void chuck warranty

D = Outer DiameterH = HeightL = OAL

Pinion Screw

PartNumber OD L

3-888-306 0.1850 1.3780

3-888-308 0.2441 1.7126

3-888-310 0.2441 1.7126

3-888-312 0.3228 1.9685

Wrench

PartNumber

SquareSize

3-889-306 0.3937

3-889-308 0.4724

3-889-310 0.4724

3-889-312 0.5118

Pinion

PartNumber OD L

3-886-306 1.1429 2.0669

3-886-308 1.2245 2.4134

3-886-310 1.3061 2.9134

3-886-312 1.4286 3.8583

ChuckDia

Scroll

PartNumber OD

6-1/4" 3-887-306 4.8031

8" 3-887-308 6.1811

10" 3-887-310 7.7559

12-1/2" 3-887-312 10.1181

Spare Parts for 3-Jaw Chucks with Semi-steel Body

• Sold by the piece• OD = outside diameter• L = overall length



T-TR

USP

ARE

PARTS


ChuckDia

ScrewPart Number

Screw Sizemm L No. of

Screws

4"7-897-6040* M10 x 1

1.02 47-897-6041

M12 x 15" 7-897-6051 1.34

46" 7-897-6061

M18 x 1

1.42

8" 7-897-6081 1.70

10" 7-897-6101 2.03

12" 7-897-6121 2.62

16" 7-897-6161 1.93

820" 7-897-6201 1.77

25" 7-897-6251 4.33

Hex KeyPart Number

6-999-585

6-999-586

6-999-590

BISON Fine Adjustment Screws• Sold by piece

* For 6-jaw chucks only

ChuckDia Thread

Screw No.1

Short Screw

Part Number L

5" 5/16 - 18 7-897-503

.756-1/4"3/8 - 16 7-897-510

8"

10"1/2 - 13 7-897-530 1.00

12-1/2"

15-3/4" 5/8 - 11 7-897-540 1.25

20"3/4 - 10 7-897-558 1.50

25"

Screw No.2

Long Screw

Part Number L

7-897-504 1.00

7-897-512 1.25

7-897-531 1.50

7-897-541 1.75

7-897-561 3.00

7-897-562 3.25

BISON Mounting Bolts for Hard and Soft Top Jaws• Sold by piece

L

Step Jaws

Soft Jaws


49

SET-TRU

SPARE

PARTS



TaperSize

Camlock Studs

Part Number Diameter Thread

D1-3 7-899-103 9/16"M10 x 1

D1-4 7-899-104 5/8"

D1-5 7-899-105 3/4" M12 x 1

D1-6 7-899-106 7/8" M16 x 1.5

D1-8 7-899-108 1" M20 x 1.5

D1-11 7-899-111 1-3/16" M22 x 1.5

D1-15 7-899-115 1-3/8" M24 x 1.5

Set Screw No. ofStudsPart Number

7-899-3053

67-899-310

BISON Camlock Studs and Set Screws• Sold by piece

ChuckDia Part Number Bolt

Size L No. ofBolts

4" and 5" 7-897-705 M8 x 1.25 2.756

3

6" 7-897-706M10 x 1.5

2.756

8" 7-897-708 3.149

10" 7-897-710 M12 x 1.75 3.543

12" 7-897-712 M16 x 2 3.937

16" 7-897-716 5/8 x 11 4.330

620" 7-897-7203/4 x 10

4.724

25" 7-897-725 5.118

BISON Chuck Mounting Bolts• Sold by piece

BISON Type C, DIN Studs• Sold by piece

L

TaperSize

PartNumber

Stud Diainch

Stud Diamm

Threadmm

No. ofStuds

C-4 7-921-904 .7677 19.5 M10 - 39 3

C-5 7-921-905 .7677 19.5 M10 - 43

4C-6 7-921-906 .8465 21.5 M12 - 50

C-8 7-921-908 1.063 27.0 M16 - 60

C-11 7-921-911 1.339 34.0 M20 - 75 6


Documents

SET-TRU Scroll Chucks - Lathe Department · 33 SET-TRUSCROLLCHUCKS SET-TRU Scroll Chucks QualityProducts • Partnership • IndustryExperts SET-TRU CHUCKS 4 and 6-Jaw SET-TRU Scroll