Rotary Table Collet Adapters


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Product Description

About the Rotary Table Collet Adapters

The collet fixture was designed to be mounted on the rotary table’s surface or the mill table. A knurled ring allows WW or 8.0 mm collets to be pulled into the taper and closed without using a drawbolt from the back. This is particularly useful for clockmakers for gear cutting 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 the 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

Part Number Description Quantity
11641 Rotary Table WW Collet Adapter Nose (P/N 1164 only) 1
11642 Rotary Table Collet Adapter Nut 1
11643 Rotary Table Adapter Alignment Bushing 1
11644 8-32 Drive pin 1
11651 Rotary Table 8mm Collet Adapter Nose (P/N 1165 only) 1
30561 10-32 T-Nuts 2
40670 10-32 x 1/2″ SHC Screw 2

Click the P/Ns below to download a zipped version of the IGS 3D CAD file. You will need to extract the zip file before viewing the IGS file.
1164/1165 Rotary Table Collet Adapter 3D IGS model
11641/11651 Rotary Table Collet Adapter Nose 3D IGS model
11642 Rotary Table Collet Adapter Nut 3D IGS model
11670 Collet Drawbar Tube 3D IGS model (Shown for reference only. Not include with the Rotary Table Collet Adapter.)
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