BS EN 4538-2-2014 航空航天系列. 低振幅下带自润滑衬料提升载荷的耐腐蚀钢制球形平面轴承. 窄系列. 尺寸和负载. 英制系列
Aerospace series. Bearings, spherical plain, in corrosion resisting steel with self-lubricating liner elevated load under low oscillations. Narrow series. Dimensions and loads. Inch series