粗大浓稠硕大噗嗤噗嗤h,精品人妻码一区二区三区,国产av无码专区亚洲精品,日韩a片无码毛片免费看小说

metal polymer plain bearings bearings combine the high load capacity and dimensional rigidity of lubricated metallic bearings with the performance and economic benefits of self-lubrication. The structure of the bearings consists of a rigid steel or corrosion-resistant bronze backing which provides mechanical strength, while a porous sintered bronze interlayer impregnated with a homogeneous mixture of PTFE and lead provides low friction and high wear resistance. 金屬聚合物滑動軸承，軸承結合高負載能力和與性能和自潤滑的經(jīng)濟效益潤滑金屬軸承立體剛性。軸承的結構包括一個剛性的鋼或耐腐蝕的銅襯，它提供機械強度，而具有PTFE的均勻混合物和鉛浸漬的多孔青銅燒結層間提供了低摩擦和高耐磨性。