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Description
Sherline 1/8" (.1250") WW Collet
Ensures high centering accuracy
Fits specialized tapered adapters
Accommodates diameters ±.001"
Supports .002" maximum runout
Offers through-hole design for stock
The Sherline 1/8" (.1250") 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. 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 are known as "pot" chucks and are not bored through, being only .260″ deep. 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 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.
1x Sherline 1/8" (.1250") WW Collet
1/8" (0.1250")
Maximum runout of .002″ or less
Collet sizes above 3/16″ (4.5mm) are not bored through
