Bearing layout selection

Source: China Bearing Network Time: 2017-09-11

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The type of machinery is different; the operating conditions of the bearing will be different; the functional requirements are not the same; but in general; the bearing used on a shaft is not less than two.
And; in order to facilitate axial positioning; most of the bearings used as fixed end bearings; other used as free end bearings. The following table lists the choice of fixed end and free end bearing layout.
The bearing type fixed end bearing is suitable for axial positioning and fixing of bearings. Bearings that can accept radial and axial loads are accepted to receive bidirectional axial load. The device also needs to consider the corresponding strength according to the axial load. Deep groove ball bearing combined angular touch ball bearing double row angular touch ball bearing self-aligning ball bearing with rib cylindrical roller bearing (NUP type, NH type)
Double row roller bearing Spherical roller bearing The free end bearing is used to avoid the elasticity of the shaft caused by the temperature change during operation; and to adjust the axial orientation of the bearing.
It is advisable to use bearings that only accept radial loads and that can be separated from the outer and outer rings.
When using non-detached bearings; gaps are usually used between the outer ring and the outer casing; so that the shaft can be elastically detached together with the bearing for axial resilience. It is used to avoid the elasticity of the shaft caused by the temperature change during operation; Axial orientation.
It is advisable to use bearings that only accept radial loads and that can be separated from the outer and outer rings.
When using non-detached bearings; the gap between the outer ring and the outer casing is usually used for cooperation; so that the shaft can be elastically evaded together with the bearing.
When the distance between the fixed end and the free end is small, the influence of the shaft elasticity is small; the two angle touch ball bearings or tapered roller bearings that can accept the axial load are used for the front or back.
Adjust the axial clearance after the device with nut or washer. Deep groove ball bearing angular contact ball bearing self-aligning ball bearing cylindrical roller bearing (NJ type, NF type)
Tapered roller bearing Spherical roller bearings are used for the vertical shaft when the fixed end is used to receive the bearing with radial load and axial load. When the axial load of the bearing is large, the thrust bearing and the radial bearing are used together.
Use the bearing with only radial load at the same free end; to avoid the elasticity of the shaft. Fixed-end combined angular touch ball bearing (reverse combination)
Double row tapered roller bearings (37000 type)
Thrust bearing and radial bearing

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