I've been refurbishing a 1042 10EE, and learned something about the bearings in the back gear section. I'd thought I'd pass this along for reference.
There two gears that are on adjustable bases. (One shown here for example.)
The original bearings are New Departure C487505V, where the C prefix means a metal shield and the V suffix means it has a snap ring. These are appear at first glance to be 52mm OD, 25mm ID, 15mm thick ball bearing, but they aren't. The actual thickness is 15.875mm. That extra .875mm (.0344") makes a difference. The length of the arbor is such that with the original bearings, there is minimal endplay when the cap is screwed on the end. If you use 15mm thick bearings, there is 2 x .034, or about 1/16" endplay and the gear won't be centered on the other gears.
I wasn't able to find a replacement for the original bearings. The only bearing I found with the correct width didn't have the snap ring. So I went with Timken replacements that are 15mm thick and spaced them away from the gear, using some .032" stock under the snap ring, and used Loctite to secure.
There two gears that are on adjustable bases. (One shown here for example.)
The original bearings are New Departure C487505V, where the C prefix means a metal shield and the V suffix means it has a snap ring. These are appear at first glance to be 52mm OD, 25mm ID, 15mm thick ball bearing, but they aren't. The actual thickness is 15.875mm. That extra .875mm (.0344") makes a difference. The length of the arbor is such that with the original bearings, there is minimal endplay when the cap is screwed on the end. If you use 15mm thick bearings, there is 2 x .034, or about 1/16" endplay and the gear won't be centered on the other gears.
I wasn't able to find a replacement for the original bearings. The only bearing I found with the correct width didn't have the snap ring. So I went with Timken replacements that are 15mm thick and spaced them away from the gear, using some .032" stock under the snap ring, and used Loctite to secure.
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