Double Diaphragm Chuck With Extreme Accuracy


Northfield Precision Instrument Corporation is a leader in the design and manufacture of precision workholding air and diaphragm chucks. Northfield manufactures precision air chucks with a guarantee of accuracy within millionths. We have come to be the precision workholding source for air & diaphragm chucks with workholding leadership in accuracy, reliability, repeatability, concentricity, productivity and customer service. Northfield has custom engineered a diaphragm chuck with an air detect feature for improved production effeciency.

This chuck was specially designed and manufactured for United Grinding. They had to grip on two different diameters (top and bottom), you can see two sets of jaws in the above picture. The part was exceptionally long so we had to manufacture the body out of a 220lb slug about 10 inches in diameter and 11 inches in length. This chuck was extremely accurate, only running out about 1 Micron (on diameter) along the entire length of the chuck, which was more than 15 inches. The end user had to perform a grinding operation on the inside tapered bore of this part. This part was a drive axel for a Volvo truck. This chuck also was designed with an air-detect feature so the machine will know when the part is properly placed in the chuck.

The world's most accurate air and diaphragm chucks for any lathe, boring machine or grinder or VMC. Models include through-hole, high-speed and quick-change chucks. Available in SAE or metric, in chuck sizes from 3" (76mm) to 18" (457mm). Accuracies of 0.001" to 0.00001" (0.254m) guaranteed. Manufacturing applications for air & diaphragm chucks include, but are not limited to, turning, grinding, boring, milling, measuring, inspection, material handling, robotics, CNC, EDM. All machines - rotating, stationary, vertical, horizontal. Universal workholding - internal, external, thin-wall, rigid.

One competitive price for complete workholding system including chuck, top jaws, custom made air tube assembly, rotary joint, hoses, operating valve and accessory kit. No hidden extras. We welcome your global inquiries and offer our website in multi languages to include German, French, Spanish, Japanese and Brazilian Portuguese.

Custom workholding chucks, jaws and fixtures are available and FREE engineering and technical assistance is offered. Contact Northfield Precision Instrument Corp., 4400 Austin Blvd., P. O. Box 550, Island Park, NY 11558-0550.

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