Mason Mechanical Labs, is a proud dealer of Atlas Workholding Chucks and accessories. We carry and install Atlas' full line of Workholding equipment. Atlas' top quality Lathe chucks and parts are designed to fit virtually any lathe and to withstand the abuse of industrial applications. Combined with a one year warranty, you can work with the assurance of using top quality workholding equipment for your specific application needs.

 

Call Mason Mechanical Labs at:

1-800-925-1838

 

We Offer The Following Chuck Styles

Series 342
Series 332
Series 742
Series 441 & 442
Series 432

We also carry many Used Chucks and Faceplates in Sizes Larger and Smaller, as well as for Specialty Applications.

Check Out our for More Details.

 

Series 342 Chucks
Self-Centering 3-Jaw Universal Iron Body
Standard Features
  • 1 Year Warranty
  • Sizes: 4" thru 32"
  • Maximum 0.003" TIR using Nominating Pinion
  • 0.0005" Repeatability using Nominating Pinion
  • Two-piece American Standard Tongue and Groove Jaws
  • Nitride Hardened and Ground Scroll
  • Three Hardened Pinions
  • High Tensile Iron Bodies
Sizes
Chuck Size
Camlock Type D Spindle
Type A Spindle
Type L Spindle
Threaded Type Spindle
4"
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6"
D-3, D-4
A-4, A-5
L-00, L-0
1-1/2-8, 1-3/4-8, 2-1/4-8, 2-3/8-6
8"
D-3, D-4, D-5, D-6
A-5, A-6
L-00, L-0
2-1/4-8, 2-3/8-6
10"
D-5, D-6, D-8
A-5, A-6, A-8
L-0, L-1
2-1/4-8, 2-3/8-6
12"
D-6, D-8, D-11
A-6, A-8
L-0, L-1, L-2
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16"
D-6, D-8, D-11
A-8, A-11
L-1, L-2
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20"
D-8, D-11
A-8, A-11
L-1, L-2
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24"
D-8, D-11
A-8, A-11, A-15
L-1, L-2
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28"
D-11
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32"
D-11
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Flatback Chucks Also Available In all Sizes Listed Above

Unfamiliar with your Spindle Type? Click Here

Series 332 Heavy-Duty Chucks
Self-Centering 3-Jaw Universal Steel Body
Standard Features
  • 1 Year Warranty
  • Steel Body
  • Sizes: 20" thru 32"
  • Maximum 0.003" TIR using Nominating Pinion
  • 0.0005" Repeatability using Nominating Pinion
  • Two-piece American Standard Tongue and Groove Jaws
  • Nitride Hardened and Ground Scroll
  • Three Hardened Pinions
  • High Tensile Iron Bodies
Sizes
Chuck Size
Camlock Type D Spindle
Type A Spindle
Type L Spindle
20"
D-8, D-11
A-8, A-11
L-1, L-2
24"
D-8, D-11
A-8, A-11
L-2
28"
D-11
A-15, A-20
L-2
32"
D-11
A-15, A-20
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Flatback Chucks Also Available In all Sizes Listed Above

Unfamiliar with your Spindle Type? Click Here

Series 742 Chucks
4-Jaw Universal Iron Body
Standard Features
  • 1 Year Warranty
  • Sizes: 6" thru 24"
  • Maximum 0.003" TIR using Nominating Pinion
  • 0.0005" Repeatability using Nominating Pinion
  • Two-piece American Standard Tongue and Groove Jaws
  • Nitride Hardened and Ground Scroll
  • Three Hardened Pinions
  • High Tensile Iron Bodies
Sizes
Chuck Size
Camlock Type D Spindle
Type A Spindle
Type L Spindle
Threaded Type Spindle
6"
D-3, D-4
A-4, A-5
L-00, L-0
1-1/2-8, 1-3/4-8, 2-1/4-8, 2-3/8-6
8"
D-4, D-5, D-6
A-5, A-6
L-00, L-0
2-1/4-8, 2-3/8-6
10"
D-5, D-6, D-8
A-5, A-6, A-8
L-0, L-1
2-1/4-8, 2-3/8-6
12"
D-6, D-8, D-11
A-6, A-8
L-0, L-1, L-2
---
16"
D-6, D-8, D-11
A-8, A-11
L-1, L-2
---
20"
D-8, D-11
A-8, A-11
L-1, L-2
---
24"
D-8, D-11
A-8, A-11, A-15
L-2
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Flatback Chucks Also Available In all Sizes Listed Above

Unfamiliar with your Spindle Type? Click Here

Series 441 & 442 Chucks
4-Jaw Independent Iron Body
Standard Features
  • 1 Year Warranty
  • Sizes: 6" thru 16" have 1 set Solid Reversible Jaws (441)
  • Sizes: 18" and up have two-piece reversible American Standard Tongue and Groove Jaws (442)
  • Hardened and Ground Operating Screws
  • High Tensile Iron Bodies
Sizes
Chuck Size
Camlock Type D Spindle
Spindle Types A, L and Threaded
6"
D-3, D-4

For Spindle Types A, L and Threaded, use of the Flatback style Chuck and Adapter Plate is necessary.

View the Adapter Plate Section by Clicking Here
8"
D-3, D-4, D-5
10"
D-5, D-6
12"
D-6, D-8
14"
D-6, D-8
16"
D-6, D-8, D-11
18"
D-8, D-11
20"
D-8, D-11
24"
D-8, D-11
28"
D-11
32"
D-11
Flatback Chucks Also Available In all Sizes Listed Above

Unfamiliar with your Spindle Type? Click Here

Series 432 Heavy-Duty Chucks
4-Jaw Independent Steel Body
Standard Features
  • 1 Year Warranty
  • Sizes: 12" thru 32"
  • Two-Piece Reversible American Standard Tongue and Groove Jaws
  • Hardened and Ground Operating Screws
  • Steel Body
  • T-slots standard on 16" sizes and larger
Sizes
Chuck Size
Camlock Type D Spindle
Spindle Types A, L and Threaded
12"
D-6, D-8

For Spindle Types A, L and Threaded, use of the Flatback style Chuck and Adapter Plate is necessary.

View the Adapter Plate Section by Clicking Here
14"
D-6, D-8
16"
D-8, D-11
18"
D-8, D-11
20"
D-8, D-11
24"
D-8, D-11
28"
D-11
32"
D-11
Flatback Chucks Also Available In all Sizes Listed Above

Unfamiliar with your Spindle Type? Click Here

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