• Chuck Adapter, 1-1/2"-8 Thread 4" Diameter
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Chuck Adapter, 1-1/2"-8 Thread 4" Diameter

Chuck Adapter, 1-1/2"-8 Thread 4" Diameter

1792

$34.95 USD
$34.95 USD
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Key Features

  • 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 no chuck mounting holes
  • For all 3" chucks and 4" 4-jaw chucks
  • Includes instructions for final turning of the registration diameter to ensure concentricity

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

See LittleMachineShop.com PN 1918 for a 4" diameter adapter pre-drilled for a 3-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: 4"

Outside Diameter: Ø 3.937",100 mm

Thread: 1.5"-8

Bolt Holes: None

Hub Diameter: Ø 2.205", 56 mm

Hub Length: Ø 0.551", 14 mm

Flange Thickness: Ø 0.630", 16 mm

Registration Boss: Ø 0.118", 3 mm

Registration Diameter: Ø 2.835", 72 mm

Product Instructions