How should I measure for replacement hub motor bearings?

[ClintBX]

Hi ESFMs,

One of my motors has a damaged bearing and I'm only just now getting around to shopping for a replacement.

I'm not sure I'm measuring my current bearings correctly. I've measured an inner diameter of 15 mm and an outer of 35 mm. However, when I look for bearings of that dimension, I can't find anything that matches. The closest I've come across is 16 mm inner with like 26 mm (+/- mm).

Is there a special way to measure bearings? I've just been measuring the very inner diameter and the very outer diameter.

Clinton

 

[flat tire]

Too hard to find bearings on the internet eh? Mcmaster has that size.

 

[Drunkskunk]

Measure outside diameter, then inside diameter, then the thickness.
35x15x11 is common enough. Cheap, too at $1.79 plus shipping
C3 is standard clearance.
https://pgnbearings.com/products/6202-2rs?variant=13312815038577

Or you can get 2 delivered same day from Amazon for Still cheap. $6.40
https://smile.amazon.com/6202-2RS-S...35x11+bearing&qid=1563181819&s=gateway&sr=8-1

 

[markz]

Cheap as borscht

Or you can get 2 delivered same day from Amazon for Still cheap. $6.40
https://smile.amazon.com/6202-2RS-S...35x11+bearing&qid=1563181819&s=gateway&sr=8-1

 

[motomech]

Most bearings have a 4 digit reference # on the outside race.
Or just take it to a bearing, belt and chain store and let them match it up.
The Japanese and German marks are the best quality.

 

[ClintBX]

Alright, thanks guys. I doubled checked my measurements and sure enough, it is a 15x35x11. Just bought a pair from Amazon.

Thanks again.