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Unconditional Satisfaction GuaranteeNo Shipping Fees Above 302 Months to Decide. Returns Simplified.The Sherline 17/64″ (.2656) WW Collet offers a precise and efficient method for mounting cylindrical parts or bar stock in a lathe, ensuring high centering accuracy. This collet functions as a small, precision 3-jaw chuck that fits into a specially designed tapered adapter within the headstock. A drawbar threads through the headstock into the collet’s backside, drawing it into the adapter, which causes the jaws to close and securely grip the part to be machined. This system is renowned for its 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, known as “pot” chucks, are not bored through but are instead bored to a depth of .260. The collet’s maximum runout is .002 or less, and when the WW collet adapter is properly trued, it ensures optimal performance.
Sherline collets are manufactured to standard WW specifications, with a shank diameter of .312-.313 and a .275-40 thread. They are available in inch sizes by 64ths of an inch from 1/64 to 5/16 and in metric sizes from .3 mm to 8.0 mm by .1 mm increments. Special sizes up to .320 can be custom ordered. It is important to verify compatibility with other manufacturers’ WW collets to ensure proper fit with Sherline’s adapter.
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