Hardinge 5C Round Smooth Emergency Regular-Depth Step Chuck with 3 Split and Small Closing, 3" Hole Size

Hardinge emergency step chucks are supplied with pin holes and pins in place for precision machining. Pins are located beyond the maximum rated capacity of the step chuck, which permits stepping the chuck to its full capacity without cutting into the pins. Regular-capacity step chucks are 3/8" larger. A regular depth step chuck can be bored to a maximum depth of 1/2". A regular step chuck closer are required for each rated size. 1/2" Maximum bore depth. 3-3/4" Closer diameter.