Need suggestions on how to remove fore and aft bearings from shaft on Dremel 370-5 Moto-Tool. I don't have a bearing puller. The bearings seem to be very tight on the shaft. My concern is the pot metal ''cage'' that surronds the forward bearing. I'm concerned that aggressive tapping on the shaft might break the surronding metal.

Tools & Hardware - Others - Dremel - Variable - Speed Multipro Rotary Tool 395