693 bearings are produced with full ceramic material silicon nitride material , with this material ,the bearings can be use in high temperature and high speed area ,the inner size 3mm,outer size 8mm,the width is 4mm.
China best quality plastic bearing 608 with anti-magnetic insulation, wear-resistant corrosion-resistant, oil-free self-lubricating, high temperature resistance to cold and other characteristics, can be used for extrem operation environment.
