我厂112型混砂机,在使用中发现碾轮的滚动轴承内充满大量砂子。这种碾轮滚动轴承原设计用三个环形毛毡作径向密封,在轮柄端用两个M16螺丝通过端盖将整个碾轮拉向轮柄,使毛毡压紧在轴上。但使用中M16螺丝因碾轮绕立轴旋转产生离心力而逐渐拉长,碾轮的轴承盖和轮柄之间的间隙就增大,三个环形毛毡的压紧力大大降低,在 I plant 112 sand mixer, found in the use of roller bearings rolling wheel filled with a lot of sand. The original design of this roller bearing roller ring with three rings for radial sealing, the handle end with two M16 screws through the end cap will pull the entire wheel to the wheel handle, the felt pressed on the shaft. However, the use of M16 screw shaft rotation due to grinding wheel centrifugal force and gradually elongated, the grinding wheel bearing cap and handle the gap between the increased, three ring felt compression force greatly reduced in the