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Backplate Lathe Chuck Adapter, 5" to 3" 

Backplate Lathe Chuck Adapter, 5" to 3"
  • Fits a 5" chuck on a 3" flange
Part Number: 4770
Weight: 3.17 lb

Price: $33.53

In stock
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.

Outside Diameter Ø 4.9" (125 mm)
Center Hole Ø 1.3" (32 mm)
Spindle Side Registration Recess Ø 2.2" (55 mm)
Spindle Side Bolt Circle Ø 2.6" (66 mm)
Chuck Side Registration Boss Ø 3.8" (96 mm)
Chuck Mounting Holes None