Bearing question

[disco_monkey79]

Further to my recebt enquiry, I have now got hold of a new bearing.

However, the new one came without the mounting "shaft". My question is - do these just press on, like car bearings? Will it be relatively straightforward to remove the old one, and hammer on the new one one?

I've (hopefully) attached a pic, showing the old and the new.

Thanks!

 

[Racers]

Hi,

You will need to remove the old bearing you should be able to put it in an slightly open vice and tap the shaft out.
Then tap the new bearing on, being careful only to tap the inner race of the bearing.
Make sure you start it off straight and keep it going straight by taping it at 12:00 6:00 3:00 9:00, not times during the day but imagine the bearing as a clock face.
Warming the bearing and freezing the shaft will help assembly if its very tight.

Pete

 

[disco_monkey79]

Great, thanks for the reply, and good tip about heating/freezing (the latter won't be a problem in my garage...)

One last question - I can't see any difference between the front and the back. Does it matter which way round it goes?

Thanks again!

 

[Racers]

Hi,

If it looks the same each way round then no.

Pete

 

[DIY Stew]

Hi,

You will need to remove the old bearing you should be able to put it in an slightly open vice and tap the shaft out.
Then tap the new bearing on, being careful only to tap the inner race of the bearing.
Make sure you start it off straight and keep it going straight by taping it at 12:00 6:00 3:00 9:00, not times during the day but imagine the bearing as a clock face.
Warming the bearing and freezing the shaft will help assembly if its very tight.

Pete

+1

Also use a metal tube the same diameter as the inner race to tap the bearing onto the shaft, in the past I have used a socket and a copper faced hammer to fit bearings (copper hammer means you won't damage the socket)

Stew

 

[jimi43]

And just to amplify...you would not believe how much the metal contracts when frozen!

I would put some WD40 or Ease-It on the shaft...always helps....and try not to burr over the end of the shaft by hitting it with a hammer...use a plastic or copper hammer...lots of gentle taps. Cleaning the shaft before you remove the bearing also helps.

This bearing only moves occasionally and slightly if at all and so it is not as important as an axle bearing.

Jim

 

[disco_monkey79]

Thanks all for the replies. I'll remove the old one tonight/tomorrow, and stick the shaft in the freezer before fitting the new one.

Hopefully one of my 1/4" drive sockets will be small enough - the bearing is teeny!