Spherical roller bearings were first used in heavy-duty, medium-speed, and applications with the risk of misalignment, and their applications later extended to wind turbines, ship propulsion, sugar processing, pulp and paper, material handling, mining and construction machinery . Spherical roller bearings achieve low-friction rotation and can handle angular eccentricity, which is a factor driving its continuous penetration into more application fields.
The developer of spherical roller bearings is SKF engineer Arvid Palmgren. He joined SKF in 1917 and works in the market communications department responsible for technical information. Realizing the lack of detailed application details to support the development of bearing technology, he set out to study bearing theory and experiment.
In 1951, SKF introduced the C-type spherical roller bearing with a guide ring and a stamped steel cage. The previous small-size bearing design used an inner ring with a central flange guide to guide the rollers. It turns out that in applications where combined loads exist, flanges can cause problems, leading to high friction and insufficient reliability. The floating guide ring can help the axial positioning of the roller without generating additional internal forces and friction.
In 1979, SKF introduced the CC type bearing with self-guided roller design. For the first time, SKF uses computer-aided analysis to optimize the interaction between rollers and raceways. Therefore, the roller has more freedom and can find its equilibrium position between the raceways. This new design reduces bearing friction, especially when dealing with combined loads.
In 1989, SKF introduced E-bearings to meet the industry's requirements for improving equipment carrying capacity. This involves a radical redesign of CC bearings, using highly accurate high-tech lightweight stamped steel cages. These cages provide space for larger, more rollers, and also have self-aligning capabilities for low friction.
In 1995, SKF launched the standard sealed spherical roller bearing series.
Where are spherical roller bearings suitable?
Typical application of open spherical roller bearings
Industrial gearbox
Wind Turbines
Pump
Exhaust fans and blowers
Mining and construction machinery
Pulp and paper processing
Marine and Offshore Engineering
Metallurgical Industry
Rail transport
Typical application of sealed spherical roller bearings
Elevators and escalators
Industrial motor
Mining and construction machinery
Fluid machinery
Food processing in the shipbuilding industry
Steel manufacturing
Conveyor
crane
As with all SKF products, spherical roller bearings have undergone continuous development. The most recent was the introduction of new SKF Explorer spherical roller bearings for high-speed applications in the industrial gearbox industry in 2018. In the future, spherical roller bearings will continue to push the limits of performance.
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