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搅拌桶的叶轮轴由轴承支撑。下部轴承油封常因泡沫粘附而污损,特别是干燥后的秽物附着在轴承上,使轴的运动阻力
The impeller shaft of the mixing drum is supported by the bearings. The lower bearing seal often due to foam adhesion and fouling, especially after drying the filth attached to the bearing, the shaft resistance to movement