Backplate Lathe Chuck Adapter, 4" to 3"

Fits a 4" chuck on a 3" flange

Part Number: 4769
Weight: 2.04 lb

Price: $27.72

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Description
Specifications

This is a semi-machined adapter plate. The side that attaches to the lathe flange is fully machined. The side on which the lathe chuck mounts is not finished.

Mount the backplate adapter on your lathe and complete machining of the chuck-mounting side. This ensures two things; that it will fit your chuck, and that it is concentric on your lathe.

Specifications

Specifications
Outside Diameter	Ø 3.9" (100 mm)
Center Hole	Ø 0.9" (22 mm)
Spindle Side Registration Recess	Ø 2.2" (55 mm)
Spindle Side Bolt Circle	Ø 2.6" (66 mm)
Chuck Side Registration Boss	Ø 2.9" (73 mm)
Chuck Mounting Holes	None