SKF bearing type accuracy grade detailed

Source: China Bearing Network Time: 2018-05-29

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The accuracy grade of SKF bearings has progressed from 0th level; it has been satisfied with respect to general use level 0; but when used in the conditions or occasions shown in Table 1; the accuracy of level 5 or higher is required. The above accuracy level is It is based on the ISO standard; however, its title is different in national regulations.
The standard method for standardizing SKF bearings is complicated; the best choice of standard bearings in the description of mechanical equipment (this portrays whether the bearing can be simply acquired; here is a topic; some SKF bearing catalogues do have some types; but some The standard bearing is not in stock in mainland China; some time-divided futures will be very long; so in the bearing selection, we must consider the time cost and the cost of the later replacement) SKF bearing load; the load applied to the bearing; its nature, size, The direction is changeable. Generally; the extra fundamental load is displayed on the scale table, but the axial load and radial load, etc.; is also an important factor in selecting the appropriate SKF bearing. When the ball and needle bearing scale When the needle roller SKF bearing generally has a high load and can accept a large oscillation and impact load.
The speed of the promise is based on the type of SKF bearing; scale; accuracy; cage type; load; smooth method; and cooling method and other factors. The SKF bearing table lists the speed of the standard precision bearing under the oil smooth and grease smooth. General; deep groove ball bearings, active self-aligning ball bearings and cylindrical roller bearings are suitable for high-speed work.
SKF bearing scale accuracy and rotation accuracy are based on ISO and JIS specifications. For machines requiring high precision and high speed operation; SKF bearings with 5 or more precision are recommended; deep groove ball bearings, radial thrust ball bearings or cylindrical roller bearings It is suitable for high working precision machinery. Rigidity; when the rollover and raceway contact surfaces of SKF bearings are pressed; elastic deformation occurs. Some mechanical requirements minimize elastic deformation. The elastic shape of roller bearings is stronger than that of ball bearings. The variable is small.
In some cases, SKF bearings are preloaded to add rigidity. This procedure is generally used for deep groove ball bearings, radial thrust ball bearings and tapered roller bearing inner and outer ring offsets; shaft tortuosity; shaft or bearing housing Public service change; cooperation fault will lead to the pain of the inner and outer circle. To avoid excessive pain point; active self-aligning ball bearing; active spherical roller bearing; or self-aligning bearing seat is the better choice. å—“ audio frequency and twist Rolling bearings are produced according to high-precision specifications; therefore, the sound and torque are small. Deep groove ball bearings and cylindrical roller bearings are suitable for occasions with low noise and low torque.

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