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Unconditional Satisfaction GuaranteeNo Shipping Fees Above 302 Months to Decide. Returns Simplified.The Sherline 19/64″ (.2969) 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. The mechanism involves a drawbar threading through the headstock into the collet’s backside, drawing it into the adapter, which in turn closes the jaws to securely grip the part for machining.
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″. This design may result in increased runout when machining parts that extend further from the collet’s front.
Sherline collets are logically numbered, with inch collets beginning with part number 1160 followed by two digits indicating the size in 64ths of an inch. These collets are manufactured to standard WW specifications, with a shank diameter of .312-.313 and a .275-40 thread. It is crucial to verify compatibility with other manufacturers’ WW collets to ensure they fit the Sherline adapter. Sherline also offers a slightly larger adapter and drawbar set to accommodate some other brands of 8 mm collets.
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