Diaphragm Chuck features built-in pneumatic hammer.

Northfield Precision Instrument Corp.    Island Park, NY 11558
Apr 02, 2013 Measuring 5 in. in diameter, Diaphragm Chuck features morse taper number three female bore for locators and built-in pneumatic hammer to expel morse taper locators. Diaphragm centers work piece and pulls it onto MT-3 stops. Hardened and ground to 60/63 RC, MT-3 type stops are ground between centers to guarantee perfect concentricity.

Double Diaphragm Chuck grips 2 different diameters.

Northfield Precision Instrument Corp.    Island Park, NY 11558
Dec 26, 2012 Manufactured out of 220 lb slug about 10 in. in diameter and 11 in. in length, Model DPH-800 is extremely accurate, running out about 1 micron on diameter along entire length, which is more than 15 in. Custom-made chuck is designed with air-detect feature so that machine will know when part is properly placed in chuck.

Air Chuck features spring clamp and air open operation.

Northfield Precision Instrument Corp.    Island Park, NY 11558
Sep 27, 2012 Opening at < 50 psi and gripping part at constant 35 psi, Model 1070-250W features 2 jaws of hardened and ground 1018 steel with Rockwell C hardness of 58–63. Chuck has ¼ in. opening on diameter (1/8 in. opening per jaw) and is modified for spring clamp and air open, using nitrogen compressed gas springs in spring clamp mechanism. If air pressure to machine is lost, parts will not fly out and damage operator or machine. Parts are gripped on 4 points with carbide-coated grippers.

Sliding Jaw Chuck holds multiple parts.

Northfield Precision Instrument Corp.    Island Park, NY 11558
Aug 21, 2012 Model NF-800 includes set of hardened and ground subjaws and 2 sets of inserts. Subjaws are designed to accept inserts, making chuck capable of holding multiple parts and enabling quick change-over from one part to next. Subjaws were ground in place to allow for optimized accuracy and repeatability with better than .0001 TIR.

Sliding-Jaw Air Chuck features specialized top tooling.

Northfield Precision Instrument Corp.    Island Park, NY 11558
May 08, 2012 Intended for lathe applications, 2-jaw Model 470 enables side-loading of parts into very center of small cylindrical insert pads, which are changeable and held on-center to chuck's OD within subjaws to accommodate different part sizes. Subjaws have large milled pocket, to clear part. When mounted on spindle, chuck meets accuracy/repeatability of .0001 in. TIR or better.

Three Jaw Air Chuck grips automotive hubs.

Northfield Precision Instrument Corp.    Island Park, NY 11558
Oct 03, 2011 Measuring 7 in. in diameter, Model 700 has special jaws that grip short diameter of automotive hub to drill and chamfer 5 holes. Special stop mounted to chuck face has air detect holes for part seating confirmation. Contoured and relieved, stop allows chamfering tool to break edge on banking surface of work piece.

Collet Chucks feature air-activated design.

Northfield Precision Instrument Corp.    Island Park, NY 11558
Jul 01, 2011 Interchangeable with 4 in. chucks, 5C Collet Chucks utilize standard wet or dry air feed tubes with same bolt pattern as 4 in. models. All components are hardened and ground to 58/63 R.C. and all diameters are ground within 1/10,000 T.I.R. Utilizing standard 5C collets as well as 5C expanding collets, chucks run at speeds in excess of 8,000 rpm.

Precision Diaphragm Chuck features 6-jaw design.

Northfield Precision Instrument Corp.    Island Park, NY 11558
May 19, 2011 Measuring 6 in. dia, Model DPH-600W employs special jaws and stop to grip plasma welding nozzle. Stop has six .040 in. dia air detect holes for part seating confirmation, and chuck is counterbalanced to maintain exact jaw for up to 6,500 rpm. Along with respective radial and axial accuracies of 0.000020 and 0.000010 in. TIR, product offers max speed of 10,000 rpm, standard chucking range of 0-4.8 in., and 0.060 in. jaw stroke with pull-down action (1.5 in. top jaws).

Coolant Airblast Air Chuck grips hole saw blanks.

Northfield Precision Instrument Corp.    Island Park, NY 11558
May 13, 2011 Model 627w (.0001 TIR) 6 in. dia., coolant/air blast thru, 2-jaw air chuck, with 1 in dia. counter bore for tap clearance, provides workholding package to grip hole saw blanks for turning and tapping. Sub-jaws have 2 bullet nosed pins that will grip blanks between 2 holes, and ¾ in. wide jaws fit between 2 hardened and ground full circle segments mounted to chuck face to support workpiece during machining. Accuracies range from 0.001-0.00001 in.

Precision Workholding Chuck comes in sizes from 3-18 in.

Northfield Precision Instrument Corp.    Island Park, NY 11558
Apr 22, 2011 Available in both SAE and metric sizes, Model DPH-500-5 chuck gives accuracy of 0.001-0.00001 in. Customizable unit features serrated jaws to enhance gripforce and axial locator with integral/air-detect function for positive loading of customer's part. Tertiary datum locator in axial locator allows parts to be twisted into position upon loading.