Custom Diaphragm Chuck suits pneumatic pump applications.

Press Release Summary:

Custom 3 x 3 double diaphragm chuck clamps 11 tooth powdered metal gears. Upper and lower jaws flex separately to ensure clamping on pitch line of tapered gears. Engineered to meet needs of metalworking industry, they are available in SAE or metric, in chuck sizes from 3-18 in. (76-457 mm) with accuracies of 0.001-0.00001 in. (0.254 mm).

Original Press Release:

Custom Diaphragm Chuck for Pneumatic Pump Industry

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. Manufacturing in standard materials and workholding products available in powdered metals for OEM's.

Northfield is pleased to offer a unique engineering solution to a diaphragm chuck.

Presenting a double diaphragm chuck that meets challenging pneumatic pump applications. Our custom 3x3 double diaphragm chuck clamps the powdered metal gears (11 tooth). The upper and lower jaws flex separately to ensure clamping on the pitch line of tapered gears. Workholding air & diaphragm chucks, fixtures & jaws are engineered to meet any engineering needs for the metalworking industry with solutions for all OEM's manufacturing. A variety of specials include a standard 450WHS chuck with special jaws, a 425 air chuck with a sprocket face, 450 (.0001" T.I.R.) with flexing inserts ... and more. Industrial custom chucks for machining of precision parts for automotive, energy & power transmission, hydraulic pumps, pneumatic, military & defense, marine, and night vision, space & mission critical machined components.

Northfield Precision designs and manufactures the world's most accurate workholding precision pneumatic Air and Diaphragm Chucks for any lathe, boring machine or grinder or VMC. Available in SAE or metric, in chuck sizes from 3" (76mm) to 18" (457mm) with accuracies of 0.001" to 0.00001" (0.254m) guaranteed.

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. Quick change, thru-hole and coolant-thru chucks are available with engineered workholding consultation services for all your OEM applications. 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.

Custom workholding chucks and jaws 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. Call Toll Free 1-800-810-2482 - Fax(516) 431-1928; or visit our website at

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