30 元券球面轴承322P324P777319¥296.80去看看业麦工厂发布了外球面立带座轴承CP315P316PU31731P8P777319P320P321P式322P324P10 元券精密主轴车用777015731631¥172.80去看看贝恒发布了777015731631承777319ACM精密单3列角接触球轴机床主轴汽车用