孔用挡圈是装在孔里面的用外径 代表产品国标GB893,德标DIN472 轴用挡圈是装在轴外面的用内径 代表产品国标GB894,德标DIN471。用作固定零部件的轴向运动,这类挡圈的外径比装配圆孔直径径稍大。安装时须用卡簧钳,将钳嘴插入挡圈的钳孔中,夹紧挡圈,才能放入预先加工好的圆孔内槽(恒锴工业)。
DIN 6799
孔用挡圈—标准型和重型 Circlips (retaining rings) for bores - Normal type and heavy type
DIN 472
轴用挡圈—带外凸耳型 Retaining rings with lugs for use on shafts (external circlips)
DIN 983
轴用钢丝挡圈及挡圈槽 Round wire snap rings and snap ring grooves for shafts and bores
DIN 7993
轴用挡圈—标准型和重型 Circlips (retaining rings)for shafts - Normal type and heavy type
DIN 471
孔用挡圈—带内凸耳型 Spring retaining rings with lugs for use in bores (internal circlips)