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Specific introduction and classification of spherical roller bearings

wallpapers News 2020-11-20
Spherical roller bearings are bearings with drum-shaped rollers assembled between the inner ring with two raceways and the outer ring with spherical raceways. Spherical roller bearings have two rows of rollers, which mainly bear radial load, but can also bear axial load in any direction. With high radial load capacity, it is especially suitable for working under heavy load or vibration load, but it cannot bear pure axial load. The outer ring raceway of this type of bearing is spherical, so its alignment performance is good, and it can compensate for the coaxiality error.
 
The main uses of spherical roller bearings: papermaking machinery, reduction gears, railway vehicle axles, rolling mill gearbox bearing seats, rolling mill rolls, crushers, vibrating screens, printing machinery, woodworking machinery, various industrial reducers, vertical Self-aligning bearing with seat.
 
The insulated spherical roller bearing is based on the standard spherical roller bearing. The outer ring of the spherical roller bearing is sprayed with a uniform ceramic coating (alumina coating) by a plasma spraying process to achieve an insulation effect.
 
Spherical roller bearings are divided into two different structures: symmetrical spherical rollers and asymmetrical spherical rollers according to the cross-sectional shape of the rollers. Asymmetrical spherical roller bearings are early products, mainly for maintenance services for the main engine, and the new design of the main engine Symmetrical spherical roller bearings are rarely used. The internal structure has undergone a comprehensive improved design and parameter optimization. Compared with the earlier produced spherical roller bearings, it can withstand a greater axial load. The operating temperature of this bearing is low, so it can meet the requirements of higher speed. According to the inner ring with or without ribs and the cage used, it can be divided into two types: C type and CA type. The characteristics of C type bearings are that the inner ring has no ribs and the use of steel plates. Stamping cage, CA type Teruien bearing is characterized by ribs on both sides of the inner ring and the use of a car-made solid cage.
 
In order to improve the lubrication of the bearing, a spherical roller bearing with an annular oil groove and three oil holes in the outer ring can be provided to the user, which is indicated by the bearing postcode /W33. According to user requirements, spherical roller bearings with inner ring oil holes can also be supplied. In order to facilitate customers to install, unload and replace bearings, spherical roller bearings with a taper inner hole can also be provided, and the taper hole taper is 1:12, The suffix code is K to indicate that in order to meet the requirements of special users, bearings with an inner bore taper of 1:30 can also be provided, and the post code is K30. Bearings with a tapered inner hole can be directly mounted on the tapered journal with a lock nut or can be mounted on the cylindrical journal with the aid of an adapter sleeve or a withdrawal sleeve.

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