轴套—内孔有轴向润滑槽且通至两端面
轴套材料：
直淬钢(Dierct harden steel): GCrlS ( 52100) 42CrMo (4140 ) 45(1045)
渗碳钢(Carburizing steel): 20Cr ( 5120 ) 20CrMo(4118) 20CrNiMo(8620H)
铜(Copper):ZCuZn24AI6Mn3Fe3 ZCuAI9Fe4Ni4Mn2
弹簧钢(Spring steel):65Mn 50CrVA 60Si2MnA
产品特点：内孔有轴向润滑槽且通至两端面
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