- Cast iron lathe chuck adapter fits lathes with 1″-8 spindle nose thread
- Adapter is 5″ (125 mm) in diameter and has no chuck mounting holes
- Use it for all 5″ chucks
- Includes instructions for final turning of the registration diameter to ensure concentricity
Cast iron lathe chuck adapter fits a lathe with a 1″-8 spindle nose thread.This adapter is 5″ (125 mm) in diameter and has no chuck mounting holes. Use it for all 5″ chucks.
*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.
| Nominal Size | 5″ |
| Outside Diameter | Ø 4.9″ (125 mm) |
| Thread | 1″-8 |
| Bolt Holes | None |
| Hub Diameter | Ø 2.2″ (56 mm) |
| Hub Length | Ø 0.4″ (10 mm) |
| Flange Thickness | Ø 0.6″ (16 mm) |
| Registration Boss | Ø 0.2″ (4 mm) |
| Registration Diameter | Ø 3.9″ (100 mm) |







