I have a dyna Myte 2000 I've rebuilding. I'll have some pics up as things progress. I'm currently rebuilding the spindle. In this peticular machine it has 3 GMN 6002 P5 bearing. 2 stacked in the bottom of the machine and one in the top for the pully. I can find those easily enough at ~ 140$ each. I've also found some ABEC 7 rated 6002 bearings but they are ceramic at 36$ each. Are ceramic bearings approiate for a spindle? How does an ABEC 7 compair with a P5 rated bearing? The other thought was to up grade to an angular contact bearing.

I have a dyna Myte 2000 I've rebuilding. I'll have some pics up as things progress. I'm currently rebuilding the spindle. In this peticular machine it has 3 GMN 6002 P5 bearing. 2 stacked in the bottom of the machine and one in the top for the pully. I can find those easily enough at ~ 140$ each. I've also found some ABEC 7 rated 6002 bearings but they are ceramic at 36$ each. Are ceramic bearings approiate for a spindle? How does an ABEC 7 compair with a P5 rated bearing? The other thought was to up grade to an angular contact bearing.

I never even heard of a Dyna 2000, but for a spindle you certainly do want angular contact bearings. The two stacked bearings on the bottom of your spindle *should* be a matched, pre-loaded pair of angular contact bearings. These will be custom ground so that when bolted rigidly together with no spacers, they will have optimum preload. Radial ball bearings will suffer from either end float, radial slop, and/or reduced life, as they are not designed to withstand high axial force. Radial bearings are often used in hobby class machines, like the little Chinese mills.

Regards,
Ray L.