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Unconditional Satisfaction GuaranteeNo Shipping Fees Above 302 Months to Decide. Returns Simplified.The Sherline 5.3mm (.2087) WW Collet provides a precise and efficient 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 mechanism involves a drawbar threading through the headstock and into the collet’s backside, drawing it into the adapter, which causes the jaws to close and securely grip the part for machining.
WW collets are distinct from milling collets due to their through-hole design, allowing stock to pass entirely through up to a maximum diameter of 3/16″ or 4.5mm. Collets larger than this diameter are referred to as “pot” chucks and are not bored through, being only .260″ deep. The collet ensures a maximum runout of .002″ or less, provided the WW collet adapter is trued as per instructions, ensuring optimal accuracy.
Sherline collets are manufactured to standard WW specifications, with a shank diameter of .312-.313 and a .275-40 thread. They are available in both inch and metric sizes, with inch sizes ranging from 1/64″ to 5/16″ and metric sizes from .3 mm to 8.0 mm. It is crucial to verify compatibility with other manufacturers’ WW collets to ensure they fit the Sherline adapter.
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