Northfield Precision Instrument Corp.
Island Park, NY 11558
Air Chuck/Tool Holder rotates up to 4,500 rpm.
Modified for spring clamp/air open, Model 350 consists of 3 in. diameter, 3-jaw Air Chuck mounted to BT-30 tool holder. Chuck assembly mounts in standard BT-30 vertical machining center and is actuated via coolant through spindle passage. Standard VMC can be used as vertical lathe with pallet on one side for automatic load/unload of work pieces.
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Diaphragm Chuck has internal rotary union.
Model DPH-300I standard 3 in. dia (1 micron TIR) 6-jaw diaphragm chuck is designed with internal rotary union that keeps air feed tube stationary. This eliminates vibration of standard rotating tube and allows chuck to operate at speeds up to 15,000 rpm. Chucks are tooled with special jaws and stops to hard turn small fuel injection components.
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Face Clamping Chuck features center mounted diaphragm.
Ten inch face clamping chuck has adjustable orienting pins and center mounted 3 in. diaphragm plate. Plate centers work piece before two contoured fingers swing into position to face clamp aluminum pump housings for distortion free boring at 4000 rpm.
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Diaphragm Chuck grips circulator pump bearing housings.
Model DPH-400W, 4 in. diaphragm chuck has special jaws and stop to grip circulator pump bearing housing in-between ears on root diameter. Four of six jaws are used because there are 8 ears. Pins are contoured to compensate for clamping diameter tolerance and diamond coated to provide additional grip. O.D. and bore are machined, and part is ejected with internal air piston.
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Diaphragm Chuck grips compressor scrolls.
7 in. Diaphragm Chuck is designed to grip cast-iron compressor scrolls on drive shaft hub for finish milling of scroll walls and face. 8 air-open/spring-clamp chucks are mounted on tombstone. Chucks have pulldown action to pull scroll onto fixed stop for zero Z-axis location. Jaws change out for 2 sizes of scrolls and repeat to 1/10,000 TIR. SAE or metric sizes range from 3 in.(76 mm) to 12...
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