DIN EN 3289:1994
航空航天系列.机体用轴承.不锈钢双列自定心滚珠轴承.直径系列 0.尺寸和负载; 德文版本 EN 3289:1994
Aerospace series; bearings, airframe rolling - Double row self-aligning ball bearings in corrosion resisting steel - Diameter series 2; dimensions and loads; German version EN 3289:1994