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Installing SKF overall eccentric swivel bearing clearance method of selection

date:2013-04-28

Clearance is an important factor for SKF bearings work correctly. Select suitable of bearing tour gap, can make load in scroll body Zhijian distribution reasonable; can limit axis (or shell) of axis to and radial displacement to guarantee axis of rotating precision; make overall eccentric go arm bearing in requirements of temperature Xia can normal work; can reduced bearing work Shi of vibration and noise,, thus, bearing tour gap on bearing life, and temperature rose, and vibration and noise has is large of effect. When selecting a bearing clearance, in addition to bearing operating conditions (such as load, speed, temperature, etc) and bearing performance requirements (such as friction torque, vibration and noise, running accuracy, etc), you should consider the following:
1. Interference fit of the bearing with shaft and housing led to the reduction of clearance;
2. When bearing, inner and outer temperature difference causes the reduction of clearance;
3. Shaft and housing materials clearance decreases or increases due to different coefficients of expansion.
In the case of premature failure of all SKF bearings, some 25% was prompted due to improper installation or use of incorrect. Applications may need to be heated, with mechanical and hydraulic installation method to correctly and efficiently install an overall eccentric swivel bearings. Choose the installation method for applications to extend the help bearing service life and reduce premature failure of bearings and the cost resulting from potential damage caused by applications.
Heated oil bath bearing, which may contaminate the bearing, leading to premature failure of SKF bearings. Induction heating is the most commonly used means of heating the bearing, this is because its control, high efficiency and safety. Bearings manufacturers determine the induction heater for bearing applications research and development standards. Whole eccentric swivel bearings induction heater has many features, helping to prevent damaged bearings during the heating process.