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The size range of small electric motor bearing is 1 to 20 mm inner diameter. The precision grade of these small motor bearings are respectively ABEC1, ABEC3, ABEC5, ABEC7. The small dc motor bearing we offer have the following features:
The motor bearing is the connecting device of the stationary part and the rotating part of the motor, and its quality is also the key to determine whether the motor can operate normally. Motor bearings also need to operate in both low and high speed conditions, and also to minimize friction loss, so it is especially important for bearing maintenance and maintenance.
Motor bearings work relatively smoothly and the noise is much lower than that of ordinary bearings. As long as the liquid friction lubrication is ensured, friction loss and surface wear can be greatly reduced. This is also difficult to meet with ordinary bearings. The motor bearing fits loosely, mainly between the bearing cap and the bearing seat. When working, the rotor amplitude is increased and the vibration frequency is twice the frequency. In order to eliminate the looseness of the motor bearing, the bearing interference fit must be ensured.
When the motor bearing is running, the temperature of the bearing ring is higher than the temperature of other accessories, so it will also cause the inner ring and the journal to loosen, and the high temperature expansion of the outer ring will cause it to have no The expected axial movement. The friction of the seal may also cause heat to cause the inner ring to loosen. Therefore, the temperature difference and heat flow in the motor bearing configuration must be fully considered.
During operation, as the load increases, the motor bearing may also deform, the inner ring of the interference fit becomes loose, and the inner ring may move due to the influence of the rotating load. Therefore, the inner ring interference of the motor bearing should also be appropriately increased or decreased depending on the load.