What are the main structural types of spherical roller bearings?

Structural type of cylindrical bore spherical roller bearing:

The 20000 C-type bearing uses symmetrical spherical rollers and a steel plate stamped cage. The inner ring has no fixed ribs, the rollers are lengthened, and the load-bearing capacity is large. The retaining ring is guided by the inner ring during movement, and the alignment performance is good.

The 20000 CC type bearing is an improved type of the 20000 C type bearing. The improved bearing reduces the friction between the rollers and raceways and increases the load capacity.

2000 CACM type bearing adopts symmetrical spherical rollers and solid cage, and the inner ring has fixed small ribs and movable middle retaining ring. The main parameters, rated load and limit speed of this kind of bearing are the same as those of the corresponding 20000 CC type bearing.

The 20000 TN1 bearing adopts symmetrical spherical rollers and a nylon molded cage. The inner ring has no fixed ribs and movable center retaining rings, and the cage is guided by rollers.

20000 CC type, 20000 CACM type and 2000 TN1 type bearings are structural types that have been developed and optimized in recent years and should be given priority. The old-structure spherical roller bearings (postcodes without internal structural changes after the basic code) use asymmetric spherical rollers. The inner ring has fixed small ribs and middle ribs, and there is friction between the rollers and the raceways. Large and small bearing capacity, this kind of bearing is a product that has been eliminated within a time limit and should not be used in new main engines.

Tapered bore spherical roller bearings are a variation of cylindrical bore bearings, except that the cylindrical bore is changed to a tapered bore. For bearings with a bore taper of 1:12, the postcode is K, and for bearings with a bore taper of 1:30, the postcode is K30. When this type of bearing is matched with a tapered journal, the axial movement of the inner ring can slightly adjust the radial clearance of the bearing.

The spherical roller bearing installed on the adapter sleeve. If the tapered hole spherical roller bearing with the rear code K and K30 is installed on the matching adapter sleeve, it will become the rear code K+H. Type and K30+H type bearings. This kind of bearing can be installed on the optical shaft without shoulder, and is suitable for occasions where bearings need to be installed and disassembled frequently.

The bearing outer ring above has a lubricating oil groove and three lubricating oil holes, and its post code is W33.

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