Chuck Adapter, 1-1/2"-8 Thread 4" Diameter, 3 Holes
- Cast iron lathe chuck backplate adapter fits lathes with 1-1/2"-8 spindle nose thread
- Adapter is 4" (100 mm) in diameter and has three chuck mounting holes for a 3-jaw chuck
- For 4" 3-jaw chucks
- Includes instructions for final turning of the registration diameter to ensure concentricity
Part Number: 1918
Weight: 2.20 lb
Weight: 2.20 lb
Price: $33.95
This product is currently backordered.
Estimated availability:
05-Feb-2023
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This adapter is for a 4" 3-Jaw chuck such as LittleMachineShop.com PN 1698.
NOTE: PN 1792 is the same adapter just without the 3 holes pre-drilled.
*NOTE*These adapters require machining on the lathe on which they will be used.
Instructions are included for final turning of the registration diameter on your lathe to ensure perfect concentricity.
Chris' TipsWOODWORKERS: Our threaded adapters are not suitable for use on wood turning lathes. Please do not purchase them for this application. These adapters require machining on the lathe on which they will be used, and this is impossible on a wood lathe.
| Nominal Size | 4" |
| Outside Diameter | Ø 3.9" (100 mm) |
| Thread | 1.5"-8 |
| Bolt Holes | 3 |
| Bolt Size | M8 |
| Bolt Circle | Ø 3.3" (84 mm) |
| Hub Diameter | Ø 2.2" (56 mm) |
| Hub Length | Ø 0.6" (14 mm) |
| Flange Thickness | Ø 0.6" (16 mm) |
| Registration Boss | Ø 0.1" (3 mm) |
| Registration Diameter | Ø 2.8" (72 mm) |
Compatibility
This product works with these LittleMachineShop.com products:
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