Vises - Jergens & Acme - #7

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Phone 800-537-4367 or +1 216-486-5540 • Fax: +1 216-481-6193 • E-mail: info@jergensinc.com • www.jergensinc.com Production Vises www.jergensinc.com 2.7 2 Unmatched Setup Speed and Workholding Flexibility Q. Is there a preferable location for the liner bushing? A. System repeatability is improved if the liners are located at opposite corners of a rectangular fixture plate. For consistency, we recommend locating the liner bushings at top left and bottom right. Q. What are the advantages of using the Ball Lock™ System over the conventional method of dowel pins and cap screws? A. Both locating and locking are accomplished in the same motion. Ball Lock™ shanks require only 2.5 turns to lock a 1/2–13 (M12) screw with ¾" (18mm) of thread engagement requires 10 turns to lock. On CNC machines, the repeatability of fixture locations makes indicating of the fixture unnecessary. Q. How do I recess the fixtureplate for a clear surface ? A. Counterbore the fixture plate to a diameter large enough to allow easy removal of the shank. Note: The thickness of the plate section under the head of the shank is critical and must conform to mounting instructions . Q. What if my plate is thinner than the recommended thickness? A. By adjusting the depth of the counterbore for the receiver bushing in the subplate, you can still use the Ball Lock™ System. If there are any questions on this type of application, please call 1-800-JERGENS. Q. Can I use the shanks in a heated environment? A. The shank is made of alloy steel, heat treated to 40-45Rc and should with stand temperatures up to 400°F. (200°C). Note: Thermal expansion of fixture plates may affect the center distance tolerance and repeatability.