Suma Precision Machinery

The main reasons for the increase in bearing temperature are:

First: Can the quality of smooth oil deteriorate?If smooth oil viscosity is large will also lead to the bearing temperature rise;

Second: if the bearing mechanism assembly is too tight, lack of clearance will also lead to flange bearing temperature rise;

Third: bearing assembly is too tight will lead to bearing temperature rise;

Fourth: bearing ring in the shaft or shell rotation will also lead to the bearing temperature increase;

Fifth: bearing load is too large will lead to the bearing temperature rise;

Sixth: if the bearing adhere to the frame or rolling body broken, will also lead to the bearing temperature rise.

After the bearing is pressed into the bearing, it should be rotated sensitively without retardation.If there is obvious rotation is not sensitive, then indicate the size of the shaft is too large, the tolerance should be reduced.If there is an obvious sense of "rustling" by hand rotation after bearing is pressed into the shaft, it may be that the tolerance of the shaft is too large or the roundness of the shaft is not good.Therefore, when controlling the tolerance of shaft and bearing chamber, roundness should also be controlled well. At present, many domestic manufacturers only stop the tolerance and do not stop the roundness.

Because flange bearing is a high-precision product, if the improper assembly is easy to form damage to the bearing groove, resulting in bearing damage.Bearing in the assembly should be a special mold, can not be knocked at will, when the shaft can only be pressed into the small circle of stress, pressure when the big circle can only be big circle of stress.When the assembly request to use air pressure or hydraulic pressure, the upper and lower die should be outside the degree of the state, if there is an inclination will lead to bearing channel damage due to stress, and make the bearing lead sound.

When the bearing is mounted on the rotor to do dynamic balancing, it is easy for the iron filings generated during dynamic balancing to enter the bearing interior, so it is best to do dynamic balancing before the bearing is mounted.There are some manufacturers in order to assemble, assembly in the bearing room coated with some oil or grease from smooth effect, but often the operator is very difficult to control the quantity, if the oil or grease in the bearing room accumulated more, it is easy to enter the flange bearing along the shaft when the bearing rotation.Bearing room is best not to oil or grease, such as non - coating must be controlled not to accumulate in the bearing room.

The characteristic of paint rust is mostly in sealed motor. The sound of motor during assembly is very good, but after some time in the warehouse, the abnormal sound of motor becomes very big, and there is serious rust phenomenon when the bearing is removed.Before many manufacturers will think that is the problem of flange bearing, after our publicity from time to time, now the motor factory once realized that the main problem is the insulation paint.The problem is mainly due to the insulation paint volatilized acid in a certain temperature, humidity under the composition of corrosive substances, the bearing channel corrosion after the bearing damage.The title can only be a good choice of insulation paint, and after drying ventilation for a period of time after the assembly.