GIKPSR12-PS轴承 5212NAS轴承 GIKSL12-PS轴承 5213NAS轴承 GIKSR12-PS轴承 5214NAS轴承 5203RS轴承 GAL12-DO轴承 5204RS轴承 GAL12-UK轴承 5205RS轴承 GAR12-DO轴承 5206RS轴承 GAR12-UK轴承 5207RS轴承 GIL12-DO轴承