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Unconditional Satisfaction GuaranteeNo Shipping Fees Above 302 Months to Decide. Returns Simplified.The Sherline 1.4mm (.0550) 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 into the collet’s backside, drawing it into the adapter, which causes the jaws to close and securely grip the part to be machined. The collet system is renowned for its accuracy, accommodating a narrow 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 to pass entirely through. The maximum diameter for stock passing through is 3/16 or 4.5mm, although larger collets, known as “pot” chucks, are available. These larger collets are not bored through but are instead bored to a depth of .260, which may result in increased runout depending on the setup and part length.
Sherline collets are logically numbered, with inch collets starting with part number 1160 and metric collets with 1178, followed by digits indicating size. 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. Special sizes and larger pot chucks are available upon request.
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