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The so-called bearing clearance refers to the amount of movement of the bearing when it is not installed in the shaft or bearing box, and the inner ring or the outer ring is fixed, and then the bearing clearance is not fixed. . What effect does it have on the performance of hydraulic oil pump motors? The editor of Dalan Motor takes you to take a look.
1. Influence of bearing working clearance
Bearing clearance is an important parameter in the use of motor bearings. If the working clearance is too small, it will cause heat or even high temperature lock. If the working clearance is too large, it will generate vibration and reduce the service life of the bearing.
High motor bearing temperature and bearing noise are common problems encountered by motor manufacturers. In addition to the factors of the bearing itself, the processing quality of the other parts related to the motor and the bearing, the assembly process, and the matching relationship between the parts will affect the final degree to varying degrees. Assembly effect.
Second, adjust and correct the bearing working clearance
The clearance-free operation of the bearing is an ideal state that the assembly process strives to achieve. Some motor manufacturers will use real-matching methods for large-size motors to achieve the purpose of adjusting the working clearance of the bearing, but considering the tolerance zone of the specially equipped parts Factor, the cost of realizing the good condition of bearing clearance through real matching is relatively high.
If the axially acting spring element is used to adjust the bearing, it can also achieve clearance-free operation. The spring element is generally placed between the bearing cover and the outer ring of the axially-moving bearing.
Ball bearings are used for bearings at both ends of small motors, and the problem of swimming must be considered; medium-sized motors use cylindrical roller bearings at the load end and ball bearings at the non-load end. Deep groove ball bearings are generally used as locating end bearings and do not have the ability to move axially. Cylindrical roller bearings are mostly used at the load end, bear large radial loads, and have the characteristics of axial movement.
----- Responsible Editor: Dalan Oil Pump Motor 02-Procurement Consultant
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