Spherical roller bearings have two rows of rollers that are mainly used for withstanding radial loads and also axial loads in either direction. Self-aligning roller bearings have high radial load capacity, especially suitable for heavy load or vibration load, but can not withstand the axial load. Spherical roller thrust bearings have good self-aligning properties and can compensate for the coaxiality error.
Main structural form of Spherical roller bearing:
I. Cylindrical hole spherical roller bearing
Cylindrical hole spherical roller bearing has four types: 20000 C， 20000 Cc，20000 CACM， 20000TN1。
20000C type bearing adopts symmetric spherical roller and steel plate stamping cage. The inner ring has no fixed ribs, and the roller is lengthened. The bearing capacity is large,
and the retaining ring is guided by the inner ring during the movement, so the self-aligning performance is good.
20000CC bearing is an improved version of the 20000 c-type bearing. The friction between the bearing roller and the raceway is reduced and the load capacity is improved.
20000 CACM type bearing adopts symmetric spherical roller and solid cage, with fixed small rib and movable intermediate retaining ring for inner ring. The main parameters and
rated load of this type of bearing are the same as 20000CC bearing.
20000TN1 type bearing uses symmetrical spherical roller and nylon shaped cage. The inner ring has no fixed ribs and movable intermediate retaining ring. The cage is guided by
The 20,000 Cc, 20,000 CACM and 20000TN1 bearings are the structural forms that have been developed and optimized in recent years, and should be selected as the priority.
II. Tapered bore spherical roller bearing
For bearings with inner hole taper of 1:12, the rear code is indicated by K; For bearings with inner hole taper 1:30, the rear code is indicated by K30. When such bearings are
matched with the conical shaft diameter, the radial clearance of the bearing can be adjusted by the inner ring moving along the axial direction.
III. Spherical roller bearing mounted on a adapter sleeve
The tapered roller spherical roller bearings with the rear code K and K30 are mounted on the matching adapter sleeves, and then they will be the bearings with rear code K+H
and K30+H . This type of bearing can be mounted on an optical axis without shoulder and is suitable for applications where the bearing needs to be removed and removed
frequently. For bearings with lubricating oil groove and three lubricating oil holes on the outer ring of the above bearings, the rear code is W33.