KRV47PPA轴承 NUKR47A轴承 PWKRE72.2RS轴承 KR80PPA轴承 KRV80PPA轴承 NUKR80A轴承 PWKR80.2RS轴承 KRE80PPA轴承 FYT1.1/4TF/VA201轴承 FYT1.1/4TF/VA228轴承 FYT35TF/VA201轴承 FYT35TF/VA228轴承 FYT1.1/2TF/VA201轴承 FYT1.1/2TF/VA228轴承 FYT40TF/VA201轴承 FYT40TF/VA228轴承