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What are the factors that affect the function of bearings with seats

2021-12-16
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What are the factors that affect the function of bearings with seats


As one of the many types of bearings, the use of seat bearing is also very broad. Whether the function of seat bearing has been maintained in good condition is related to the use situation in detail. Let's take a look at the factors that affect the function of seat bearing today.


First of all, there will inevitably be a little dust in the air, that is, more or less, which does not matter much. However, if the roller bearing does not operate well and there is a lot of dust, heat will strain its function and reduce the service life of the bearing.


2、Noise, as all colleagues who have studied physics know, resonates. If there is a large noise around the roller bearing, it will inevitably touch the air, affect the operation of the roller bearing, greatly affect the bearing, and damage the bearing.



Bearing with seat


When installing the bearing adapter sleeve, the outer ring of the bearing and the hole of the bearing seat should not be interference fit, and the inner ring and the journal should not be too tight fit. In general, it is more appropriate to push the bearing into the journal and bearing seat with both hands.

轴承紧定套

The installation of tapered bearings is very important for adjusting axial clearance. Usually, it can be adjusted by adjusting nuts, adjusting shims, and rib or preload springs in the bearing housing holes. The size of the axial clearance can be determined based on the working premise, and is related to the socket when installing the bearing, the distance between the bearings, and the material of the shaft and bearing seat. For high load and high-speed bearings with seats, when adjusting the clearance, it is necessary to consider the impact of temperature rise on the axial clearance, and estimate the clearance reduction used by temperature rise, that is, the axial clearance should be adjusted appropriately.


For bearings with low speed and vibration, clearance free installation should be adopted to ensure good contact between the rollers of the seated bearing and the raceway, and diffuse load. After adjustment, measure the axial clearance with a dial indicator. The technique is to fix the dial indicator on the machine body or bearing seat, make the dial indicator contact stand against the smooth surface of the bearing, and push the shaft left and right along the axial direction. The large swing of the watch needle is axial clearance. The adjustment of the bearing axial clearance in the bearing axial direction is the adjustment of the preload. When installing such bearings, attention should also be paid to good contact between the large end face of the tapered roller and the large edge of the inner ring.

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