2 size bearings for hub which side of hub gets the bigger or smaller bearings?

Question

The rear axel is a Kung Ten W5ER from a 1999 Trek 4000. The freehub was sticking so I was taking the axle apart to free up / clean / lube the freehub.

I noticed after it was apart that there are 2 sizes of ball bearings for the axle, and I don't know which side gets the bigger bearings.

I know I'm in trouble, any ideas out there?

Batman · Answer

Most hubs are same size both sides (9 quarter inch bearings). If they aren't, normally its the smaller ones on the freehub side (slightly smaller than the other side, maybe by a 32nd of an inch) and the larger ones are like a quarter inch and on the opposite side.

Answered by Batman on December 6, 2020

IanJ · Answer

Almost 6 years late.  The cassette side has 10.  I just took mine apart and was really surprised when the 10th one came out.  I did have the foresight to put them in separate bowls.

2 size bearings for hub which side of hub gets the bigger or smaller bearings?

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