- Ball Bearings
- Roller Bearings
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1.heave radial and some axial loads
2.type:spherical roller bearing
3.low vibration long service life
4.satisfactory of price
Spherical roller bearings are self-aligning. Also they can sustain some axial loads as well as heavy radial loads; hence the journal box design is relatively simple.
1.single spherical roller bearing
the bearing box is allowed to move freely in relation to the axle center because of the self-aligning property of the bearing.
When a single spherical roller bearing is used, the use of a wing-type bearing box is recommended.
2.two spherical roller bearing
When two spherical roller bearings are used in a double-row configuration, the self-aligning capability of the bearing is lost. But they are provided higher load-carrying capacity.
This type of bearing is used worldwide because of standardized by the international union of railways (UIC) in Europe.
The main advantages of cylindrical roller bearings are their high-speed capability, easy maintenance, and ability to either allow or restrict axial movement.
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