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Moving Chuck from Heavy 10 to 13 inch South Bend.

jmjones

Plastic
Joined
Oct 30, 2014
I have a Buck 6 inch adjust thru 6 jaw chuck on my Heavy 10 that I am planning to move to a SB 13 that I recently acquired. I am not finding any Buck adjust thru backing plates for the L00 spindle available. What seems like the most reasonable way to go about this?
 

MrWhoopee

Hot Rolled
Joined
Nov 8, 2017
There's nothing exotic about an adjust-tru backing plate. In fact, they're kind of a sloppy fit in the chuck. That's what allows the adjustment. The only catch is the flange of the backing plate needs to be about 1.5" thick, 3/4 down in the 3.12 bore where the adjusting screws are and 3/4 for the 6 bolts that attach the chuck.

20220622_194749[1].jpg

edit: You could weld a ring onto one of the commonly available backing plates (assuming it's steel and not C.I.) to create the 3.12 dia. snout. It isn't load bearing, it's just for locating.
 
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old_dave

Hot Rolled
Joined
Apr 15, 2002
Location
Central Mother Lode, California
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