Heavy Duty Spherical Roller Bearings NTN

About Heavy Duty Spherical Roller Bearings NTN

1. Spherical Shape: Unlike cylindrical roller bearings, which have straight rollers, spherical roller bearings have barrel-shaped rollers. This design allows the rollers to make contact with the raceways at an angle, enabling them to accommodate misalignment between the shaft and housing.

2. Construction: Spherical roller bearings consist of an inner ring with two raceways, an outer ring with a spherical raceway, and barrel-shaped rollers held in place by a cage. The inner ring and rollers are usually equipped with two rows of symmetrical rollers, while the outer ring features a concave spherical raceway.

3. Load Capacity: Spherical roller bearings are capable of carrying heavy radial loads and significant axial loads in both directions. Their design distributes the load evenly across the rollers, reducing stress concentrations and enhancing load-carrying capacity.

4. Misalignment Compensation: The spherical shape of the rollers and raceways allows the bearing to accommodate shaft misalignment caused by shaft deflection, mounting errors, or thermal expansion. This capability helps improve the bearings performance and service life in applications where misalignment is common.

5. Lubrication: Spherical roller bearings can be lubricated with grease or oil. Lubrication helps reduce friction, dissipate heat, and prevent premature wear and failure of the bearing components.

6. Sealing: Some spherical roller bearings come equipped with seals or shields to protect against contamination from dust, moisture, and other contaminants. Sealed bearings help extend the service life of the bearing by keeping out harmful particles and retaining lubrication.

7. Application: Spherical roller bearings are commonly used in heavy-duty industrial applications such as mining, construction, steel manufacturing, paper mills, and marine propulsion systems. They are also found in automotive applications, including axle assemblies and gearboxes.