power chuck / 3-jaw / lathe / pneumatic
Number of jaws:
This is a Northfield model 700 (7in. dia. 3-jaw) air chuck with special jaws that grip a short diameter of the automotive hub shown to drill and chamfer the 5 holes. A special stop mounted to the chuck face has air detect holes for part seating confirmation. The stop is contoured and relieved to allow a chamfering tool to break the edge on the banking surface of the work piece.