GIKR12-PW轴承 5211NAS轴承 5212NAS轴承 KR32轴承 5213NAS轴承 KR32-PP轴承 5214NAS轴承 KRV32-PP轴承 GAKSL12-PS轴承 5203RS轴承 GAKSR12-PS轴承 5204RS轴承 GIKPSR12-PS轴承 5205RS轴承 GIKSL12-PS轴承 5206RS轴承