Self-aligning roller bearing

Self-aligning roller bearing has two rows of rollers, mainly bear radial load, but also can bear any direction of the axial load, there is a high radial load capacity, especially suitable for heavy or vibration load work, but can not bear pure axial load. This kind of bearing outer ring raceway is spherical, so its alignment performance is good, can compensate for coaxiality error.

There are two symmetrical spherical rollers, the outer ring has a common spherical raceway, the inner ring has two and bearing axis tilt an angle of the raceway, has good adjusting performance, when the shaft is bent or installed different heart bearing can still normal use, adjusting with bearing size series different, the general allowed adjusting angle for 1 ~ 2.5 degrees, the type of bearing load capacity is large, in addition to can withstand radial load The bearing can also withstand two-way axial load, with good impact resistance, generally speaking, self-aligning roller bearing are allowed to work at a lower speed.

Self-aligning roller bearing according to roller cross-sectional shape is divided into symmetrical spherical roller and asymmetrical spherical roller two different structures, asymmetrical self-aligning roller bearing are early products, mainly for the mainframe maintenance services, the new design of the mainframe is rarely used symmetrical self-aligning roller bearing, internal structure after a comprehensive improvement in design and parameter optimization, compared with the early production of self-aligning roller bearing, can withstand greater axial load. The operating temperature of this bearing is lower, so it can adapt to the requirements of higher speed.

Self-aligning roller bearing design, so that it has a self-aligning function, that is, the bearing itself can be adjusted, the angle between the inner and outer ring alignment error, in the normal load and working conditions, the inner ring rotation, allowing the existence of the following table gives the value of misalignment. Whether this value can be fully achieved, depending on the design of the bearing configuration and seal type and other conditions, self-aligning roller bearing are designed for high radial load or even accompanied by eccentricity, improper lubrication, impurities, very high speed or very high stress environment.