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Description
Sherline 1.0mm (.0394) WW Collet
Ensures high centering accuracy
Fits stock up to 4.5mm diameter
Features a through-hole design
Manufactured to standard WW specs
Offers maximum runout of .002″
The Sherline 1.0mm (.0394) WW Collet provides an efficient and precise method for mounting cylindrical parts or bar stock in a lathe. This collet functions as a small, precision 3-jaw chuck that fits into a specially designed tapered adapter within the headstock. The drawbar, threading through the headstock and into the collet, pulls the collet into the adapter, causing the jaws to close and securely grip the part for machining. This system ensures high centering accuracy, accommodating a small range of diameters with a tolerance of approximately ±.001″ (.02mm).
WW collets are distinct from milling collets due to their through-hole design, allowing stock with a maximum diameter of 3/16″ or 4.5mm to pass entirely through. Collets larger than this diameter are known as "pot" chucks and are not bored through, which may result in increased runout depending on the setup and part length.
Sherline collets are manufactured to standard WW specifications, with a shank diameter of .312-.313 and a .275-40 thread. They are not hardened, ensuring compatibility with Sherline's drawbar and adapter. It is advisable to verify the fit of WW collets from other manufacturers with Sherline's adapter before purchase. The collets are available in both inch and metric sizes, with special sizes available upon request.
