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SKF Bearing Four options

date:2013-06-21

     SKF bearings are an important foundation for all types of machinery and equipment parts, although bearing only mechanical equipment parts part, but bearing in machinery and equipment plays a vital role bearings are precision products. How to choose the best bearings that do? Below are selected bearing four points to note:

     1, SKF Bearing choice: bearing type is normally provided by the user of the technical staff supporting the use of the product according to the conditions and withstand the load on the bearing selection. Main business personnel to understand the user′s actual load is consistent with the selected bearing, if the bearing is not up to the requirements, you should advise clients to re-election as soon as possible models, but unless special products in the choice of models is generally not a problem.

     2, SKF bearing clearance choice: users buy bearings generally only advise on what type, grade, rarely will the bearing clearance requests, business people must ask what the use of the bearing condition in which the bearing speed, temperature tolerances are directly related to the choice of bearing clearance. Usually in the 3500 r / min rotational speed of the motor they use the CM clearance, such as high-speed motor requires a relatively large clearance. Bearing clearance in the assembly because of swollen and bore cylindrical narrowing caused by reduced clearance reduction amount = amount of interference × 60% (except aluminum bearing chamber). Such as bearing assembly before clearance is 0.01mm, the amount of interference during assembly of 0.01mm, the bearing clearance after assembly is 0.004mm. In theory, the bearing clearance at zero noise and life will achieve the best state, but in the actual operation taking into account the temperature and so on, the bearing clearance in the assembly preferably is 0.002mm-0.004mm.

     3, oil of choice: the choice is generally based oil bearing speed, temperature conditions, noise requirements and other aspects of starting torque selection, requiring a variety of oils and fats business staff performance very understanding.

     4, SKF bearing seal type selection: bearing lubrication can be divided into oil lubrication and grease lubrication. Oil lubricated bearings are generally used form of bearings, grease lubricated bearings generally use shields or rubber seals seal. Dust cover for high temperature or environment good parts, seals of contact seals and non-contact sealing, the contact seal dustproof performance is good but the starting torque, non-fit seal starting torque is small, but the sealing performance No contact is good.