Page 1 of 1

Rear inner bearing play

PostPosted: Sat Apr 13, 2019 10:56 pm
by The Veg
Pardon me if this is a total nOOb question, but I've not dealt with a lot of bearings and need to learn.

Should a new rear inner bearing have this much play? It turns perfectly smoothly, no notchy spots, and there is no play perpendicular to the axis of rotation.

Have a look:

https://www.youtube.com/watch?v=BU3gRdoQDSk

So is it probably OK since it turns totally smoothly, or have I buggered it? This is the one I installed backward and have now removed.

Re: Rear inner bearing play

PostPosted: Sat Apr 13, 2019 11:11 pm
by rgh0
I set up a spare new inner rear bearing in a vice like you did and have around 0.020 inch / 0.5 mm of axial float in the inner versus outer race. This is typical for a single row deep groove ball bearing and different brands may have a little different end float. Visually it looked much like your video.

The spare I had was a Japanese FBJ bearing

cheers
Rohan

Re: Rear inner bearing play

PostPosted: Sat Apr 13, 2019 11:51 pm
by GEORDIE
That bearing looks OK to me.

Re: Rear inner bearing play

PostPosted: Sun Apr 14, 2019 2:49 am
by The Veg
Thanks, glad to hear it. Now to get it back on the RIGHT way,