European-Style Collets and Feed Fingers for US Manufacturing

Hardinge Inc. (Elmira, New York) supports European-style, multi-spindle machine owners in North America. They manufacture and inventory solid collets, master collets & pads, solid feed fingers and master feed fingers & pads for Euroturn, Gildemeister, Index and Schütte machines with 24-hour shipping of standard fractional and whole metric sizes. Decimal sizes and products for other brands of machines will be available within a 5- to 7-day delivery. Hardinge institutes a semi-finished blank program for fast turnaround of pickoff burring collets and special-shape collets.

According to Hardinge, the collet should match the bar stock exactly. If you use inch bar stock, you should use fractional collets - NOT metric. Very few metric sizes have a direct fractional equivalent. Metric collets for metric bar stock, fractional collets for inch bar stock, and decimal collets for decimal bar stock will provide the best results. Match the collet size (order hole) exactly to the workpiece or bar stock diameter. If you are using ¼-inch bar stock with a 6mm collet, you could get push-back, chatter or poor concentricity because the collet is smaller than the bar stock. "Most operators don't realize the ramifications of such a small variance in diameter," says Rick Schonher, Hardinge Workholding product manager. "If the collet order hole is larger than the workpiece or bar stock, the part may pivot at the line of contact at the face of the collet. If the collet order hole is smaller than the workpiece or bar stock, the edges of the slots will bite into the workpiece and may cause damage or mark the bar. When the collet is the proper size for the workpiece or bar stock, there is a full bearing along the angle and the circumference of each segment of the collet where they mate with the spindle angle (seat)."

For more information call 800-843-8801 or visit

About Hardinge Inc.

Hardinge is a global designer, manufacturer and distributor of machine tools, specializing in SUPER- PRECISION(TM) and precision CNC Lathes, high performance Machining Centers, high-end cylindrical and jig Grinding Machines, and technologically advanced Workholding & Rotary Products. The Company's products are distributed to most of the industrialized markets around the world with approximately 74% of the 2011 sales outside of North America. Hardinge has a very diverse international customer base and serves a wide variety of end-user markets. This customer base includes metalworking manufacturers which make parts for a variety of industries, as well as a wide range of end users in the aerospace, agricultural, transportation, basic consumer goods, communications and electronics, construction, defense, energy, pharmaceutical and medical equipment, and recreation industries, among others.. The Company has manufacturing operations in the United States, Switzerland, Taiwan, and China. Hardinge's common stock trades on NASDAQ Global Select Market under the symbol, "HDNG." For more information, please visit

Hardinge Inc., One Hardinge Drive, PO Box 1507, Elmira, New York 14902-1507 USA

Phone: 800-843-8801; Fax: 607-734-8819; E-mail:

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