Hardinge 5C-EN2-2 Round Smooth 1/2" Extended Nose Emergency Collet with 1/8" Pilot Hole and 3 Slots

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Hardinge 5C-EN2-2 Round Smooth 1/2" Extended Nose Emergency Collet with 1/8" Pilot Hole and 3 Slots
by Hardinge

New!: $44.25 (as of 01/07/2013 12:51 PST)

Workholding Collets

This Hardinge 5C extended nose emergency collet is used to hold workpieces in a lathe or other machine tool. It has three slots and pins for precision machining, and the soft steel face and pilot hole allow drilling, boring, or stepping out to the exact size needed. The collet has an extended nose to permit deeper counterbores and greater tool clearance for extended workpieces. It has external right-hand 1.238” x 20 threads for connecting to the draw bar, internal threads for Hardinge positive work stops (sold separately), and a back bearing diameter of 1.250”. This emergency extended nose collet is used to hold metals, plastics, carbide, graphite, and ceramics in industrial manufacturing applications.

Collets are cone-shaped sleeves used to hold rodlike workpieces, or the shafts of tools, in the spindles of lathes, mills, or other machine tools. They are typically made of spring steel with one or more slots along the length to allow expansion and contraction, and have a center hole that is cylindrical, square, or hexagonal. A tapered collar tightens the collet to provide a fast, strong clamping action and accurate centering of the workpiece for low runout, making it ideal for high-volume production of precision parts. An expanding collet is used to hold a part on its inside surface so that it can be machined on its outside surface. A step collet (also called a step chuck) is a collet that steps up to a wider diameter to hold larger workpieces. Emergency collets are machinable to customize the collet to hold unusual sizes or shapes for limited part runs. Collets are used in applications such as the manufacture of metal and wood parts, semiconductor fabrication, and crafts, among others.

Hardinge Inc. manufactures turning, milling, grinding, and workholding products. The company, founded in 1890, is headquartered in Elmira, NY, and meets International Organization for Standardization (ISO) 9001 standards for quality management.

• Rank: #8713 in BISS
• Size: 1/8 in
• Brand: Hardinge
• Number of items: 1

• Collet for holding workpieces in a lathe or other machine tool
• Type 5C spring-tempered steel emergency collet with three slots and pins for precision machining
• Soft steel face and pilot hole permit drilling, boring, or stepping out to the exact size required
• Extended nose allows deeper counterbores and greater tool clearance for extended workpieces
• Heat-treated external right-hand 1.238" x 20 draw bar threads