Sherline 3.9mm (.1535) WW Collet

Sherline Machining ToolsSKU: RB-She-665
Manufacturer #: 117839

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Sale price £21.78

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Description

  • Sherline 3.9mm (.1535) WW Collet
  • Ensure high centering accuracy with WW collet
  • Allow stock through up to 3/16″ (4.5mm)
  • Maintain precision with max .002″ runout
  • Feature through-hole for passing stock
  • Support special sizes and pot chucks

The Sherline 3.9mm (.1535) 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 known 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 to pass entirely through. The maximum diameter for stock passing through is 3/16″ or 4.5mm. Collets larger than this diameter are referred to as "pot" chucks and are not bored through, being only .260″ deep. The collet's runout is minimal, with a maximum of .002″, ensuring precision in machining tasks.

Sherline collets are logically numbered, with inch collets starting with part number 1160 and metric collets with 1178, followed by size indicators. These collets are manufactured to standard WW specifications but are not hardened. It is crucial to verify compatibility with other manufacturers' WW collets, as Sherline collets have specific shank diameters and thread specifications. Special sizes and larger pot chucks are available upon request.

  • 1x Sherline 3.9mm (.1535) WW Collet
  • 3.9 mm (0.1535")
  • Maximum runout of .002″ or less
  • Maximum diameter stock that can pass entirely through the collet is 3/16″ or 4.5mm
  • Collet sizes above 3/16″ (4.5mm) are bored to a depth of .260″
  • Shank diameter of .312-.313 with a .275-40 thread
  • Manufactured to standard WW specifications
  • Not hardened

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