1. Good Smooth 2. High precision 3. RoHS compliant 4. Lowest price in chinese market 5. ... section ball bearings to the aerospace industry,Medical Equipment,Machine Tools,Radar Equipment,Textile Machinery,Material Handling,Satellite Systems,Antenna Equipment ... designs. These bearings are offered in ABEC 1 through ABEC7 precision grades, pre-loaded, corrosion protected, grease-lubricated, and are ...