A2-5C 3 IN EMERG STEP CHUCK
Hardinge 5C A2-4 and A2-5 Emergency Step Chucks have a longer shank than standard 5C Step Chucks and can only be used on Hardinge Conquest GT CHNC-5C and HXL A2-5 5C Lathes._They 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- and extra-depth capacity step chucks are 3/8 inch larger in diameter than the rated size so the full capacity bore may be easily machined. A regular depth step chuck can be bored to a maximum depth of 1/2 inch the extra depth step chuck to a maximum depth of 1-1/4 inch. A regular- and extra-depth step chuck closer are required for each rated size.