- Rabbit grass rack to prevent waste food boxSherline .9mm (.0354) WW Collet

• Sherline .9mm (.0354) WW Collet
• Offers precise centering in lathes
• Allows stock up to 3/16" or 4.5mm through
• Maintains runout of .002" or less
• Available in both inch and metric sizes
• Compatible with Sherline WW adapter

The Sherline .9mm (.0354) 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 and into the collet's backside, drawing it into the adapter, which in turn closes the jaws to securely grip the part being machined.

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 collets are engineered to maintain a maximum runout of .002" or less, provided the WW collet adapter is trued as per instructions, ensuring optimal performance.

Sherline collets are logically numbered, with metric collets beginning with part number 1178, followed by digits indicating size in 0.1 mm increments. These collets are not hardened but are manufactured to standard WW specifications. It is crucial to verify compatibility with Sherline's adapter when considering collets from other manufacturers. Sherline also offers a slightly larger adapter and drawbar set to accommodate some 8 mm collets from other brands. Collets are available in both inch and metric sizes, with special sizes available upon request.