Spherical Roller Bearings

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A spherical roller bearing is a rolling-element bearing that permits rotation with low friction, and permits angular misalignment. Typically, these bearings support a rotating shaft in the bore of the inner ring that may be misaligned in respect to the outer ring. The misalignment is possible due to the spherical internal shape of the outer ring and spherical rollers. Despite what their name may imply, spherical roller bearings are not truly spherical in shape. The rolling elements of spherical roller bearings are mainly cylindrical in shape, but have a (barrel like) profile that makes them appear like cylinders that have been slightly over-inflated.

NIBL’s self-aligning double-row spherical roller bearings are a combination of radial and axial bearings. These are designed to operate even if shaft and housing are, or become, misaligned under load. The internal design of the spherical roller bearings enables them to withstand very high radial loads and axial loads in both directions. These type of heavy duty bearing are the preferred choice when conditions include heavy loads, difficulties in establishing or maintaining housing alignment, or when shaft deflection is expected. These bearings can take high degrees of misalignment depending on the size and series of the bearing. shaft deflection and housing distortion caused by shock or heavy loads, which lead to misalignment, are compensated for by the internal self-alignment of the bearing elements during operation. The corner loading of rollers, a condition that limits service life on other types of bearings, cannot develop in spherical roller bearings. The inherent compensation for misalignment provided by the spherical roller bearing offers the designer the opportunity to use weldments for housing frames instead of complex castings, eliminating high cost machining operations. Even when castings may be preferred, bore alignment is less critical if spherical roller bearings are specified. Unit design and construction also makes the spherical roller bearing convenient to handle during installation or maintenance. Most types have circular grooves and lubricating holes in the outer ring. This feature facilitates more effective lubrication. NIBL manufactures spherical roller bearings with cylindrical and tapered bore. Tapered bore bearings may be used either in Plummer blocks or conventional housings.

Series : 22205 – 22228, 22308 – 22344, 23026 – 23234, 24030 – 24060

NIBL spherical roller bearings can be in straight or tapered bore and have clearances ranging from C2-C5. 

Min ID :- 25 mm

Max ID :- 300 mm

Min OD :- 52 mm

Max OD :- 460 mm

1. Steel Cage

2. Brass Cage