I would go with tapping the shaft with a soft faced mallet, a few not too heavy taps should show whether the end housing is going to part from the body easily. There may be some notches on the joint line to allow a flat punch to be use to help part the cases. The shaft should not be too tight a fit in the bearing and should knock through without too much force. Extreme force should not be required or used.

Mike

Clean the shafts up before trying to remove bearings. Perhaps whilst you can still spin them up.

Hold one half in your hand and use a mallet on that end of the shaft. I'd probably do this with the grinder on a flat surface to support the weights as it comes apart. If that doesn't work fasten one half down so you can hit a bit harder.

I've got one to do as well and have been wondering about a simple way of checking the balance of the armature without the sort of gear that is used to check grinding wheels etc.

John

–

One cheap grinder I dismantled (To make it reversible for a tool grinder.) had the bearing at one end loctited in.(I assume to provide axial location.) The other end was a light press fit to allow for the different expansion of the case and the rotor. So it is worth tapping the shaft from both ends as it will come out more easily one way. Also be careful not to rip off the wires from the winding to the centrifugal switch.

Les.

Ranbows,

It is probably a 6202-2RS. The 'N' ' might be' a grove on the outer ring. Other then that, only differences may be in the grease type and content / balls – quantity at that time / cage type / raceway clearance C0 or other. No big deals now though.

Looked at the FBC online catalogue and my own cross reference catalogues, non of wich deal with the 'RN', which might have been an factory internal ref.number.

Ketan at ARC.

Rainbows – it may not be relevant but in the old RHP catalogue that I've got it does give a "NR" suffix for the 6202 bearing as a possible variant. The NR means that the outer race would have a circiip fitted into a groove, presumably to give axial location in a housing. Does your bearing have such a fitting? Just seems that NR and RN could be different makers way of denoting the same thing.

^^^^^ Always the safest bet.