Spherical Roller Bearings
- Outer diameter: 602mm~4726mm
- Bore diameter: 30mm~75mm
- Rated load: 129kN~3410kN
Spherical roller bearings feature two rows of rollers with a common spherical raceway in the outer ring. The inner ring has two raceways that are inclined at an angle relative to the bearing axis, and the curvature center of the outer raceway is consistent with the bearing center.
Spherical roller bearing is self-aligning bearing and consequently insensitive to errors of alignment of the shaft relative to the housing, and to the deflection of shaft. It automatically compensates for the angular errors caused by shaft flexing and misalignments. In addition to radial load, the bearing can also carry bidirectional axial loads and the combined loads, featuring a large bearing capacity, and good vibration and impact resistance.
Spherical roller bearings are the most widely used bearings in the machinery industry, commonly found in various mechanical equipment in iron and steel, mining, paper making, shipbuilding, textile machinery, coal mills, power and other industries.
Spherical roller bearing cages are optional in pressed steel cage (CC), machined brass cage (CA), two machined brass cages (MB), and pressed reinforced steel cage (E). Bearing code on the same structure may have difference and the following is the features of common types of cages used in spherical roller bearings.
| Types | Features |
| CC | It consists of two pressed steel cages, flangeless inner ring and a guide ring centred on the inner ring. It adopts symmetrical spherical rollers, which features increased load carrying capacity and a longer service life compared with CA. |
| CA | It consists of a one-piece machined brass cage, an inner ring with flange on both sides and a guide ring centred on the inner ring. It features a higher limit speed and a relatively low noise. |
| MB | It consists of two pieces of machined brass cage, an inner ring with flange on both sides and one guide ring centred on the inner ring. Its performance is similar to CA, with lower load rating. |
| E | As the latest design, it uses symmetric spherical rollers, two pressed steel cages, a flangeless inner ring and guide ring centred on the cages. Guide ring around the outer ring can improve the lubricating condition on roller face of end, by reducing friction, guiding roller in the non-load region and assisting roller entering into the load area. Meanwhile, the length of roller is getting longer so that the load rating is greatly enhanced. Usually, the rated load can be increased by 20% -35%. |
