軸套—外圓有兩條橢圓槽
軸套材料：
直淬鋼(Dierct harden steel): GCrlS ( 52100)??42CrMo (4140 )??45(1045)
滲碳鋼(Carburizing steel): 20Cr ( 5120 )??20CrMo(4118)??20CrNiMo(8620H)
銅(Copper):ZCuZn24AI6Mn3Fe3??ZCuAI9Fe4Ni4Mn2
彈簧鋼(Spring steel):65Mn??50CrVA??60Si2MnA
產品特點：外圓有兩條橢圓槽
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