Item # 470W, 4 Inch Model 470W Air Chuck with coolant through body

Also available with 0.000025″ (25 millionths) (0.64µ) repeatability. Master Jaws move at perfect right angle to centerline of spindle.

Unit of Measure



4 Inch100 mm

Repeatability (Max. Concentricity)

0.0001 (2.5µ) T.I.R.|0.000025" (25 millionths) (0.64µ)

Repeatability (Max. End Lengths)

0.0001 (2.5µ) T.I.R.

Max. Jaw Opening

0.1 Inch2.54 mm

Force per Jaw (Variable to)

938 lb426 kg

Weight (with Aluminum Jaws)

6 1/3 lb2.88 kg

Weight (with Steel Jaws)

7 1/2 lb3.41 kg

Top Jaws

Located on hardened steel pins in master jaws & secured by socket head cap screws



Class 80 Ductile Cast Iron

Master Jaws

Hardened Steel


Hardened Steel

Air Cylinder

Aluminum and Stainless Steel, O-Ring Sealed, incorporated into the chuck body