日本住友金属工业公司和日本精工公司共同开发热镀锌辊子用氮化硅陶瓷滚动轴承。镀锌槽中支撑辊子的轴承在４５０℃以上的高温下，接近无润滑状态下使用，并受熔融金属腐蚀。采用滚动轴承，短时间内就会产生剥落和腐蚀磨损。因此，通常用旧式滑动轴承。但是，这种轴承靠面接触 Japan’s Sumitomo Metal Industries and Japan’s Seiko co-developed hot-dip galvanizing roller silicon nitride ceramic roller bearings. Bearings in galvanized tank support rollers are used near unillustrated temperatures above 450 ° C and are corroded by molten metal. The use of rolling bearings, spalling and corrosion will occur within a short period of time. Therefore, the old plain bearings are usually used. However, this bearing contacts the surface