8.0 mm Collet Adapter, P/N 1163

WW collets vary somewhat depending on manufacturer. This adapter holds those collets with a .314-.315 body size and .275-40 thread, which we refer to as 8.0 mm collets rather than WW collets. Sherline WW collets have a body size of .312-.313 and .275-40 thread. 

The collet adapter goes into the #1 Morse taper of the headstock. 8.0 mm collets are then placed in the adapter and are drawn up tight using the drawbar which passes through the hole in the spindle. The advantage of WW or 8.0 mm collets is that they have a hole through them for holding long stock. Therefore, the collet drawbar is hollow also and threaded inside to grip the external threads of the collets. Material up to 3/16" in diameter can pass through the collet and drawbar.

A knockout bar is also included to help remove the adapter from the tapered spindle.