SF-1无油润滑轴承;SF-2边界自润滑轴承;JDB固体镶嵌式润滑轴承;FD-AL铝塑直线轴承;FZ直线保持架轴承;JF-800双金属轴承;FR增强四氟软带;FB090青铜轴承;模具导套;石墨铜套;无油轴承;滑动轴承;自...