Selection and matching of motor bearings with three-bearing structure in motor bearing system
Starting from the actual needs of the operation of the motor itself, the support of each set of bearings at both ends is more economical, and the structure of the bearing system of the two support points is also relatively simple. but in some high voltage and low voltage high power motor in often...
2020-12-31
Starting from the actual needs of the operation of the motor itself, the support of each set of bearings at both ends is more economical, and the structure of the bearing system of the two support points is also relatively simple. However, in some high-voltage and low-voltage high-power motors, three-bearing structure is often required.
The motor with three-bearing structure adopts two sets of bearings at the driving end and one set of bearings at the non-driving end. For this problem, it is easier to understand a three-bearing motor based on the topic of fixed and floating ends of the motor discussed in our previous two articles.
In the three-bearing structure motor, the driving end adopts two sets of bearings, one of which is a cylindrical roller bearing that can bear a large radial load, and the other is a deep groove ball bearing that is only used for the axial positioning of the motor, that is, the driving end of the motor is a fixed end with sufficient load capacity, which can not only meet the installation accuracy requirements of the dragged equipment, but also meet the operating conditions of large radial load. The non-driving end of the motor, that is, the floating end of the motor, can be matched with the bearing according to actual requirements.
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