Definition
Spherical roller bearings are rolling-element bearings in which the rollers have a barrel-like shape and are arranged between an inner ring with two raceways and an outer ring with a single spherical raceway. This geometry enables self-alignment, meaning the bearing can compensate for angular misalignment between the shaft and the housing without being damaged.
Features
- High radial load capacity due to load distribution across multiple rollers and their shape
- Capable of carrying axial loads - often in both directions to some extent
- Tolerance for misalignment or shaft deflection (typically up to 1–2° in practice), reducing stress during installation and operation
- Robust design suitable for dynamic and shock loads - ideal for harsh environments, vibration, and impact
- Available in various configurations: open or sealed, with brass, steel, or polyamide cages
Applications
- Industrial gearboxes and power transmission systems with high radial and axial loads
- Metallurgical, mining, and cement industries - crushers, kilns, and vibration-exposed equipment
- Mining and construction equipment, mobile machinery, and transport systems
- Turbines, turbo compressors, and turbofans - where shaft misalignment or deformation may occur
- Paper and pulp industry, materials processing, continuous production - machines with long shafts prone to deflection
