... :More than 350 types, including metric and inch deep groove ball bearing, self-aligning bearing, angular contact bearing, plain bearing, ... Open type, seal rings, shields can be provided.Retainer: NYLON, PTFE, PEEK, steel, bronze, or full complements.Non-standard bearing can ... Si3N4 ceramic bearings.In the ceramic bearings produce deep ditch ball bearings are the main products, gauge 6000-6008 and 6200 ...