Better bearings for 36 50 3.17 shaft v2?

[Dragonfueled]

I keep killing bearings in my v2 3300 36 50 in my slash. The first time the endbell popped off and killed the bearings. Medusa waranteed it and now a month later I can hera the bearings going again.
I completely sealed the motor and use a large heatsink. Motor runs about 140ish.

Does anyone know what size bearing this motor takes and if i can get better ones that will last. I love the motor but this is a pain. The 60mm in my e revo just keeps trucking but this one is giving me a hard time.