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Installation of cylindrical hollow bearing1
When installing a non-separable bearing with a tight fit between the inner ring of the bearing and the shaft and a loose fit in the bearing seat hole of the outer ring, a press can be used to install the bearing on the shaft first, and then install the shaft together with the bearing into the bearing seat hole. If the bearing is small, the end face of the ring can also be tapped with a soft metal hammer to force the bearing, but the tapping force must be evenly distributed on the bearing ring. When the outer ring of the bearing has a tight fit with the bearing seat hole, and the inner ring has a loose fit with the shaft, the bearing can be installed on the shaft first. When the bearing ring is a tight fit with the shaft or housing bore, a special mounting sleeve is used to simultaneously press the bearing onto the shaft or housing. For the installation of the separable bearing, the inner ring and the outer ring can be easily installed on the shaft or the bearing seat respectively. At this time, attention should be paid to inserting the shaft with the inner ring installed into the bearing housing with the outer ring installed. , try to keep it concentric to prevent the rolling elements and raceways from being scratched. When the bearing size is large, it is difficult to install it in a cold state due to the large installation force required or the large interference of the bearing under heavy load work. It is necessary to preheat the bearing inner ring or bearing seat before to install. During hot installation, the heating temperature should be strictly controlled. When heating the bearing, the maximum heating temperature should not exceed 1200C, generally 80~1000C. Bearings with dust caps or seals must not be heated, otherwise the lubricant will be lost. The heating method can use electric induction beauty, oil bath heating and other methods.
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