N.A. Woodworth Diaphragms

Diaphragm Chucks

N.A. Woodworth Diaphragms

Diaphragm Chucks

The N.A. Woodworth diaphragm chuck design is based on simplicity. A diaphragm chuck works similar to the action of an oil can bottom. No sliding parts; no friction, no wear! It operates by a simple flexing action, assuring consistently controlled concentrically.

The dovetail jaw design includes a unitized diaphragm assembly, self contained air cylinder, face plate adapter, rotary slip coupling, and installation instructions.
Tags: Woodworth Diaphragm Chuck, Diaphragm Chuck, Forkardt Diaphrapgm Chucks
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Technical Features

How a Diaphragm Works!

Air is introduced through the spindle and adapter plate by means of a ¼" pipe. When air pressure is applied, the piston moves forward about .030" and the movement is transmitted to the diaphragm by a push sleeve. As the diaphragm is flexed, the jaws open and the workpiece is loaded. To chuck, the air is turned OFF, and the jaws move toward the relaxed position until jaw contacts the part. Part is located on center. Consistent concentricity is controlled to a maximum runout of 1/3 of the part tolerance.

Technical Data
Catalog No.   SC500 SC501 SC700 SC701 SC708 SC801 SC100 SC101 SC1301 SC1701
O.D. Diameter [mm] 138 138 175 175 175 212 251 251 327 429
No. of Jaws   3 3 4 4 3 6 6 6 6 6
Movement Per Jaw [mm] 0.23 0.23 0.23 0.23 0.23 0.25 0.25 0.36 0.41  
Part Range [mm] 9.5 - 76.2 9.5 - 76.2 12.7 - 101.6 12.7 - 101.6 12.7 - 101.6 54.0 - 139.7 50.8 - 177.8 50.8 - 177.8 88.9 - 254.0 127.0 - 355.6
Max. Clamping Pressure Single 1050 1050 1800 1800 1800 2400 3800 3800 6800 12300
Max. Clamping Pressure Double 2100 2100 3600 3600 3600 4800 7600 7600 13600 24600
Weight (with jaws) [Kg] 6.83 7.26 10.43 11.34 10.88 17.24 23.13 24.50 43.54 89.81