Spherical roller bearings have two rows of rollers, which mainly bear radial load, but can also bear axial load in any direction. It has high radial load capacity, especially suitable for working under heavy load or vibration load, but cannot bear pure axial load. The outer ring raceway of this type of bearing is spherical, so its alignment performance is good, and it can compensate for coaxiality errors.
There are two rows of symmetrical spherical rollers, the outer ring has a common spherical raceway, and the inner ring has two raceways inclined at an angle to the bearing axis. It has good alignment performance. When the shaft is bent or installed out of center The bearing can still be used normally at the same time. The alignment varies with the bearing size series. Generally, the allowable alignment angle is 1~2.5 degrees. This type of bearing has a large load capacity, and the bearing can withstand radial load. The double-acting axial load has better impact resistance. Generally speaking, the allowable working speed of spherical roller bearings is lower.
Rear code for folding spherical roller bearings:
After installing the tapered hole spherical roller bearings with the rear codes K and K30 on the matching adapter sleeves, they will become the rear codes K+H type and K30+H type bearings. This kind of bearing can be installed on an optical shaft without a shaft shoulder, and is suitable for occasions where the bearing needs to be frequently installed and removed. In order to improve the lubrication performance of the bearing, an annular oil groove is drilled in the outer ring of the bearing and three evenly distributed oil holes are drilled. The rear code is W33.
Specific classification and model comparison:
1. Spherical roller bearings (20000 CC type)
2. Tapered hole spherical roller bearings (20000 CCK type)
3. Spherical roller bearings (20000 CC/W33 type)
4. Tapered hole spherical roller bearing (20000 CCK/W33 type)
5. Hole spherical roller bearings mounted on adapter sleeves (20000 CCK+H0000 type)
6. Hole spherical roller bearings mounted on adapter sleeves (20000 CCK/W33+H0000 type)