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2/21/2017 5:30 pm  #1


Van Norman 477 grinding out of round

I've got a van Norman model 477 crankshaft grinder that I can't get to grind better than .0005 out of round, and it takes some finesse at best. Only thing I can think is bearings in the head/tailstock are just too worn. Anyone have any ideas, or someone I could talk to about this machine? Van Norman is of no help on anything this old, but I can't justify replacing it.  The machine is located about an hour north of Atlanta, so if I have to pay someone to walk me through it, I'd rather it be someone in the southeast.

 

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