Rotary Table Collet Adapters

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Product Description

The collet fixture was designed to be mounted on the surface of the rotary table or the mill table. A knurled ring allows 8.0 mm collets to be pulled into the taper and closed without the use of a drawbolt from the back. This is particularly useful for clockmakers for gearcutting on a gear blank that has a pinion shaft attached that can be held in a collet. A bushing is provided that fits into the center hole of the rotary table and helps center the fixture on center. T-nuts and attaching screws are also provided for clamping the fixture in place in the rotary table or mill table T-slots.

WW or 8.0 mm collets vary somewhat in size depending on manufacturer. This adapter holds those collets made by manufacturers other than Sherline who produce a collet with a .314-.315 body size and .275-40 thread, which we refer to as 8.0 mm collets. Other common “WW” collets including those manufactured by Sherline have a body size of .312-.313 which we refer to as WW collets. A fixture for these collets is available as P/N 1164. It looks identical except that it has no identifying groove machined around the body. If you are using a brand of collets other than Sherline, measure the body diameter with a micrometer before deciding which collet fixture to order. If you are using Sherline collets, order the P/N 1164 fixture.

The improper use of machine tools and their accessories can result in serious injury. Before using this tool, thoroughly read the instructions and make sure you understand its proper and safe use.


Always wear safety glasses when operating machine tools.

Download PDF 1164 Instructions

Instructions PDF Download

11642 Rotary Table Collet Adapter Nut
11643 Rotary Table Adapter Alignment
11644 8-32 Drive pin
11651 Rotary Table 8mm Collet Adapter Nose
30561 (2) 10-32 T-Nuts
40670 (2) 10-32 x 1/2″ SHC Screw


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