进口型号KTR200规格60*90 涨紧套/胀紧套/胀套/涨紧现货 KTR200/KTR100/RFN7012-20X47/22X47/24X50/25X50/28X55涨紧套 KTR100 80x120/70x110涨紧套/动力锁/胀紧套/免键轴套/退拔环 厂家直销批发/万向轴/万向联轴器/万向节/EQ140/EQ131/SWC120