Chuck Adapter, M39 x 4 Thread 6" Diameter
Chuck Adapter, M39 x 4 Thread 6" Diameter
SKU:1922
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Key Features
Key Features
- Cast iron lathe chuck backplate adapter fits lathes with M39 x 4 spindle nose thread
- Adapter is 6" (160 mm) in diameter and has no chuck mounting holes
- For all 5" and 6" chucks
- Includes instructions for final turning of the registration diameter to ensure concentricity
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WARNING: This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
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Product Information
Description
This chuck adapter fits 9x20 lathes that have a M39x4 spindle nose thread.
There are no holes in this adapter so you can drill it for either a 3-jaw or 4-jaw chuck.
*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's Tips
Too many adapters?
See our chart that correlates lathe spindle threads to lathe chuck adapters
Here is a chart that provides dimensions of threaded lathe chuck adapters.
These adapters must be machined on your lathe to fit the chuck so that it is concentric on the lathe. In most cases you have to drill the chuck mounting holes also.
WOODWORKERS: 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.
Specifications
Nominal Size: 6"
Outside Diameter: Ø 6.299",160 mm
Thread: M39x4
Bolt Holes: None
Hub Diameter: Ø 2.205", 56 mm
Hub Length: Ø 0.945", 24 mm
Flange Thickness: Ø 0.630", 16 mm
Registration Boss: Ø 0.157", 4 mm
Registration Diameter: Ø 5.118", 130 mm