spherical self aligning roller bearing are called three types of bearings in China. spherical self aligning roller bearing are one type of radial bearings that can withstand radial loads and can withstand bidirectional bearing loads. Spherical roller bearings have large radial bearing capacity and have the function of self-aligning. The machining accuracy of the casing is low, avoiding installation error or shaft deflection, affecting the use of bearings, and high shock resistance.
The self-aligning ball bearing is a bearing equipped with a drum-shaped roller between the inner ring of the two raceways and the outer ring of the spherical raceway. The center of curvature of the raceway surface of the outer ring is the same as the center of the bearing, so it has the same self-aligning function as the self-aligning ball bearing.
Advantage of spherical self aligning roller bearing
(1) When the shaft and the outer casing are deflected, they can be automatically adjusted without increasing the bearing load.
(2) Self-aligning ball bearing has large radial load capacity and is suitable for heavy load and impact load.
(3) Good anti-vibration performance.
(4) The concentricity error due to machining, mounting, and deformation of the shaft can be compensated.
spherical self aligning roller bearing have two rows of rollers that are primarily subjected to radial loads and can also withstand axial loads in either direction. High radial load capacity, especially suitable for heavy or vibration loads, but not for pure axial loads. The outer ring raceway of this type of bearing is spherical, so its self-aligning performance is good, and the coaxiality error can be compensated.
The structural type of double row spherical self aligning roller bearing has developed rapidly, from the initial use of asymmetric spherical rollers to the later use of symmetrical spherical rollers. The symmetrical spherical roller bearing changes the condition that the rib of the inner ring is subjected to a large force, so that the roller is concentrated at the maximum diameter of the roller, the thickness of the middle retaining ring is reduced, and the roller is correspondingly increased. The length increases the bearing capacity of the bearing, which is called the reinforced structure. The letter "C" or "CA" is added after the bearing code.
CC and CA spherical self aligning roller bearing are special bearings because they have lower energy consumption and stronger toughness. CA and CC spherical roller bearings can run freely in high-speed machines and high rigidity. Low-friction precision work is popular, and it has a high bearing capacity, so it is popular among users.
Like the self-aligning ball bearing, the spherical roller bearing also has self-aligning properties, but because of the large contact surface between the roller and the raceway surface, its load capacity greatly exceeds that of the self-aligning ball bearing. Since the spherical roller bearing also has a large frictional resistance during rotation, the limit rotation speed of the bearing is lower than that of the ball bearing, but different from the line contact between the roller and the raceway in the tapered roller bearing, the limit The speed is higher than the tapered roller bearing.
spherical self aligning roller bearing are further divided into symmetrical thrust spherical roller bearings and asymmetric thrust spherical roller bearings.
These bearings have a very high axial load capacity and can withstand several radial loads while being subjected to axial loads, but the radial loads must not exceed 55% of the axial load.
Oil lubrication is generally used when in use.
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