Adjustable speed motor is a kind of motor which can change the speed of motor by changing the series, voltage, current frequency of motor, so that the motor can achieve high performance.
The bearing is an important part of the speed regulating motor equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient in the process of its movement, ensure its rotation accuracy.
Due to the manufacturing factors the difference of material uniformity, even if the same material the same size of the same batch of bearings are used under the same working conditions, their service life is the same.
So how to choose the right bearing for the speed regulating motor? These two aspects are indispensable:
Adjustment: if the adjustment accuracy of the shaft bearing seat is poor the shaft is flexed due to the load, the inner outer rings of the bearing are eccentric. The allowable eccentricity of non self-aligning rolling bearing can only be controlled by the combination of internal clearance. If the desired angle of inclination occurs between the inner outer rings, the bearings shall be selected the types such as thrust ball bearing with self-aligning washer, self-aligning ball bearing self-aligning roller bearing. The permissible tilt angle of the bearing varies depending on the bearing type, internal clearance load conditions. If the eccentricity angle in the bearing is larger than the allowable angle, the internal damage of the bearing may occur. Please contact the technician!
Rigidity: when the rolling bearing is loaded, the contact area between the bearing ring the rolling body will produce elastic deformation. The amount of this elastic change will vary depending on the load, bearing type, bearing size. If the same size series of bearings are compared, roller bearings have much higher stiffness than ball bearings; compared with the same type of bearings, the larger size bearings have higher stiffness than the smaller size bearings.