Special Internal Grip Collet Chuck


Island Park, NY… Northfield Precision Instrument Corporation, a leader in the design and manufacture of precision workholding chucks, introduces their new internal grip collet chuck. This collet chuck was custom-designed for one of their customers to clamp the ID of their valve balls. The collet is a dead length collet with a removable split part stop (part stop is made into two pieces and is hinged) to locate the back side of the work piece and is removed after clamping the work piece and prior to grinding of the work piece.



This chuck is used in a valve ball grinder. The ball is approximately 6” in diameter. The customer needed to locate and stop the ball axially on the chuck. So Northfield provided a removable spacer (Locator/Stop) behind the ball (between the ball and chuck) for axial location. The Locator needed to be removable to allow the grinding wheel (Cup) access around the top and bottom of the ball.



Northfield Precision Instrument designs and manufactures the world’s most accurate air chucks for any lathe, boring machine, grinder or VMC. Models include through-hole, high-speed and quick-change. Chucks are available in SAE or metric, in sizes from 3” (76mm) to 18” (457mm). Accuracies of 0.001” to 0.00001” (0.254m) are guaranteed. Custom workholding chucks and jaws are available and FREE engineering assistance is offered.



For more information, please contact Northfield Precision Instrument Corp.



Call Toll Free 1-800-810-2482 • Fax (516) 431-1928 • Email: info@northfield.com.



www.northfield.com

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