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How to choose the bearing type and variety

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How to choose the bearing type and variety first is; the size constraint. The general bearing can be the space of the equipment is constrained. In most cases; the shaft diameter (or bearing inner diameter) is based on the mechanical depiction or other depiction constraints. The selection of bearing type and size is determined according to the inner diameter of the bearing. Therefore, the primary scale table of the standard bearing is compiled according to the international standard inner diameter scale.
The standard method of standardizing bearings is complicated; the most suitable standard bearing is used in the description of mechanical equipment (this describes whether the bearing can be simply acquired; here is a topic of off-topic; some types of imported bearing catalogues do exist; but some non-standards Bearings are not in stock in mainland China; some time-divided futures will be very long; so in bearing selection, we must consider the cost of the moment and the cost of the later replacement. Bearing load; the load applied to the bearing; its nature, size, direction is Changeable; general; additional fundamental load is shown on the scale table, but axial load and radial load, etc.; is also an important factor in selecting suitable bearings. When the scale of the ball and needle bearing is the same; Needle bearings generally have a high load and can accept large oscillation and shock loads.
Speed; the speed of the promise is based on the type of bearing; scale; accuracy; cage type; load; smooth method; and cooling method and other factors. The bearing table lists the speed of the standard precision bearing 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.
Bearing public service; 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 precision; deep groove ball bearings, radial thrust ball bearings or cylindrical rollers Sub-bearings are suitable for high-precision mechanical and rigid; when the bearing's roll and raceway contact surfaces are pressed; elastic deformation occurs. Some mechanical requirements minimize elastic deformation. Roller bearings are more elastic than ball bearings. The shape variable is small.
In some cases, the bearing is preloaded to add rigidity. This procedure is generally used for deep groove ball bearings, radial thrust ball bearings and tapered roller bearings inner and outer ring offset; shaft tortuosity; shaft or bearing box The change of service will lead to the pain of the inner and outer circle. To avoid the painful view point too much; the active self-aligning ball bearing; the active spherical roller bearing; or the self-aligning bearing seat is the better choice. å—“ audio frequency and torque 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 occasions, the requirements are often disassembled and equipment; to ensure that the inspection and repair can be carried out regularly. The inner and outer rings can be separated from the equipment bearings such as: cylindrical bearings; needle bearings; and tapered bearings are very suitable for this occasion. 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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