Self aligning roller bearing is a kind of radial bearing, it also named spherical roller bearing, which can bear radial load and double-directional bearing load. Self aligning roller bearing has large radial bearing capacity and self-aligning function. It has low requirements on the machining accuracy of the casing, avoids the installation error or shaft deflection that affects the use of the bearing, and has large vibration and impact resistance.
The structure of double row self-aligning roller bearing has developed rapidly, from the initial use of asymmetric spherical roller to the later use of symmetric spherical roller. The symmetrical self-aligning roller bearing changes the situation that the force on the middle flange of the inner ring is large, so that the force on the roller is concentrated at the maximum diameter of the roller, reduces the thickness of the middle retaining ring, correspondingly increases the length of the roller, improves the capacity of the bearing, which is called reinforced structure, and the letter "C" or "CA" is added after the bearing code.
Like the self-aligning ball bearing, the self-aligning roller bearing also has the self-aligning property. However, due to the large contact surface between the roller and the raceway surface, its friction capacity is much higher than that of the self-aligning ball bearing. Because the self-aligning roller bearing also has large friction resistance in rotation, the limit speed of this kind of bearing is lower than that of the ball bearing, but it is different from the line contact situation between the roller and the raceway in the tapered roller bearing, and the limit speed is higher than that of the tapered roller bearing
Common structure types of self aligning roller bearing:
1. The basic type of self-aligning roller bearing 20000c, and the asymmetric self-aligning sub bearing 20000
2. Tapered bore self-aligning roller bearings 20000ck (1:12) and 20000ck30 (1:30),
3. This kind of bearing is installed on the tapered shaft by the inner diameter taper, and the axial displacement of the bearing is adjusted to meet the requirements of the interference with the shaft, avoiding the complex operation of heating installation due to the large interference and the problems of easy installation and hard dis-assembly. Of course, the increase of the interference will correspondingly reduce the radial clearance of the bearing.
4. Sealed self-aligning roller bearing, double row
5. Single Row self-aligning roller bearing
The structure of the tapered bore self-aligning roller bearing acting together with the tightening sleeve is 20000c + H000 type. The model of H000 adapter sleeve has been generalized and standardized, and can be used with bearings with various tapered holes. This kind of structure bearing can be installed on the optical shaft without shaft shoulder, which meets the requirement of adjusting the fit interference, and avoids the difficult problem that the taper angle of the tapered shaft is difficult to control, which makes the bearing installation and dis-assembly more convenient.
XRB is more than 10 years experience China Bearing manufacturer for self-aligning roller bearing design and research, depending on the rich experience for spherical roller bearing, sealed spherical roller bearing, single row double row spherical roller bearing, The quality of XRB always to learn The top level Bearing manufacturer of China, and the service life can meet 70% of The top China level, but the price have very big competitive than them, more and more customers use our spherical roller bearing to their application. we will keep our goat that to meet customer demand, keep going on improve our quality,service and our competitive power on the market.
