Angle grinder grinds to a halt

My Ryobi angle grinder which has worked it's guts out cutting the Aleu microgranite of the hearth, chopping through the wall for the rayburn chimney and all the work on the barn and house gables cutting slabs, blocks and concrete has died - or at least the bearing has gone, fortunately just as the last slab was cut! Hopefully it can be repaired.

The dell printer also packed up but I've managed to mend it.

The Bosch drill thats been back to Bosch twice already is also knackered but I'm gonna give up on that one - Bosch isn't the same since they started fabricating in Hungary.