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Talking about "How to choose the type and variety of imported bearings"
Source: Bearing network time: 2013-07-21
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Generally SKF bearings can be constrained by the space of the equipment. In most cases; the shaft diameter (or bearing inner diameter) is based on mechanical depiction or other depiction constraints. Therefore, the choice of bearing type and size is based on the inner diameter of the SKF bearing. And the resolution. Therefore, the primary scale table for standardizing SKF bearings is compiled according to the international standard inner diameter scale.
The standard method for standardizing SKF bearings is complicated; the most suitable specification for SKF bearings is used in the description of mechanical equipment (this describes whether SKF bearings can be simply acquired; here is a topic; some types of bearing catalogues do exist; but some Non-standard SKF bearings are not in stock in mainland China; some time-divided futures will be very long; so in the bearing selection, we must consider the cost of the time and the cost of the later replacement) the load of the SKF bearing; the load applied to the bearing; its nature, The size and direction are variable. Generally; the extra fundamental load is displayed on the scale table, but the axial load and radial load, etc.; is also the important factor for selecting suitable SKF bearings. When the ball and needle bearing scale At the same time; needle bearings generally have a higher load and can accept large oscillation and shock loads.
Followed by; speed.
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 SKF bearing with smooth oil and smooth grease. General; deep groove ball bearings, active self-aligning ball bearings and cylindrical roller bearings are suitable for high-speed work.
Again; SKF bearing public service.
SKF bearing scale accuracy and rotation accuracy are based on ISO and JIS specifications. For high-precision and high-speed machines, it is recommended to use bearings with 5 or higher accuracy; deep groove ball bearings, radial thrust ball bearings or cylindrical roller bearings. 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. Roller SKF bearings have elastic shape compared to 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.
Equipment and disassembly; in some cases, the requirements are often disassembled and equipment; to ensure that the inspection and repair can be carried out regularly. The SKF bearings that can separate the inner and outer rings are: cylindrical bearings; needle bearings; and tapered bearings are very suitable for this. Occasionally, the tapered self-aligning ball bearing and the active spherical roller bearing are assisted by the bushing; the same simplifies the equipment program.
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