Replace bearings in BK12 & BF12 fittings

[joe.ninety]

The C rating is the amount of radial play available when cold - C1 is the least, C5 the most, C3 is in the middle obviously and seems pretty common. The reason for the larger play is to allow for expansion when the bearing heats up I think??

I was just looking at bearings on the CNC4YOU website and was wondering what the difference is/was between the C ratings that they sell. Saying that though, and with reference to you saying that C5 was the max, their cheaper option seems to be a C7 and it seems the average difference between their C3 & C7 varieties is about a tenner. So... Is it normally worth paying the extra?

Cheers

[Desertboy]

I was just looking at bearings on the CNC4YOU website and was wondering what the difference is/was between the C ratings that they sell. Saying that though, and with reference to you saying that C5 was the max, their cheaper option seems to be a C7 and it seems the average difference between their C3 & C7 varieties is about a tenner. So... Is it normally worth paying the extra?

Cheers

The SKF ones I got from ebay were C3, £7.50 for 3 of them, need a hydraulic press to fit them.

Only replaced the squeaky one so far but it no longer squeaks so a bonus.

This is only for the floating end.