Spherical roller bearings 21300 series, whose inner rings have two raceways, and outer race-ways are spherical. The centers of curvature of outer raceways are also the bearing centers. The bearings possess self-aligning performance, the permissible disalignment angle is about 1-2.5°, and they can be used in certain permanent deflective application.
These bearings are able to carry high radial loads, as well as axial loads at the same time, but not pure axial loads, the axial carrying bearing will be needed if axial loads were higher. The contact between rollers and raceways are so close, so the friction is higher than cylindrical roller bearings, and their limiting speed is lower.
Spherical roller bearings are available in the cylindrical inner bore and conical inner bore. The taper of the conical inner bore is 1:12 rear spherical roller bearing with code K and 1:30 rear spherical roller bearing code K30. When such a bearing is matched with a conical shaft, the inner ring moves axially to adjust the radial clearance of the bearing. The tapered roller spherical roller bearings with the rear code K and K30 are mounted on the matching adapter sleeves, which become the rear bearing code K+H and K30+H bearings. This type of bearing can be mounted on an optical axis without a shoulder and is suitable for applications where the bearing needs to be installed and removed frequently.
Spherical roller bearings are primarily used in such application as rolling mills, paper making machines,power-driven gears, reduction gears, railway vehicle axles, crushers, woodworking machinery, shipping and so on.
|Bearing Model||Dimensions(mm)||Basic Load Rating(kN)||Limiting Speed(rpm)||Weight(kg)|
Spherical Roller Bearing 21304 size 20x52x15 mmInquire
Spherical Roller Bearing 21305 size 25x62x17 mmInquire
Spherical Roller Bearing 21307 size 35x80x21 mmInquire
Spherical Roller Bearing 21306 size 30x72x19 mmInquire
Spherical Roller Bearing 21309 size 45x100x25 mmInquire
Spherical Roller Bearing 21309 K size 45x100x25 mmInquire
Spherical Roller Bearing 21310 size 50x110x27 mmInquire
Spherical Roller Bearing 21308 size 40x90x23 mmInquire
Spherical Roller Bearing 21311 size 55x120x29 mmInquire
Spherical Roller Bearing 21313 size 65x140x33 mmInquire
Spherical Roller Bearing 21312 size 60x130x31 mmInquire
Spherical Roller Bearing 21315 size 75x160x37 mmInquire
Spherical Roller Bearing 21314 size 70x150x35 mmInquire
Spherical Roller Bearing 21316 size 80x170x39 mmInquire
Spherical Roller Bearing 21317 size 85x180x41 mmInquire
Spherical Roller Bearing 21319 size 95x200x45 mmInquire
Spherical Roller Bearing 21318 size 90x190x43 mmInquire
Spherical Roller Bearing 21320 size 100x215x47 mmInquire