goofy motor bearings

Cydrome Leader · 2016-06-08T16:13:42+00:00

I just tore down a early 1960s 3/4 HP 3 phase motor to examine the insides. It's from a drill press and has grease fittings on it, even though it's just a 56 frame motor with a 5/8" shaft. There's nothing special about the motor other than it has a factory paint job that matches the rest of the machine. Anyways, the thing was full of grease, yet had shielded (6203zz I think) Nachi made in Japan bearings installed. They seemed too new to be original,and why the thing was packed with grease baffles me. Nothing looks modified in any way. The only thing that would make even a lick of sense is there were unshielded bearings in there originally and that's why there were grease ports. Why the thing was pumped full of grease later is a mystery. Anybody seen anything like this before?

Jun 08, 2016 40 Replies

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Jim Wilkins 10 years ago

My stock of brass rod, sheet and tubing slowly loses its original shine but that's all. Sawed cutoffs from October 2014 show only a faint hint of tan from handling.

--jsw

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