Product Overview: The 21309 Spherical Roller Bearing
The 21309 Spherical Roller Bearing is a high-capacity component engineered for the most demanding industrial environments. As a key part of our 21300 Series, this bearing is designed to handle very heavy radial and significant axial loads in both directions. With standard dimensions of 45mm Bore Diameter, 100mm Outer Diameter, and 25mm Thickness, it is a robust solution for applications involving shaft deflection or housing misalignment.
This bearing's design features two rows of symmetrical barrel-shaped rollers that align themselves freely within a common spherical raceway in the outer ring. This self-aligning capability is crucial for accommodating angular misalignment, preventing stress concentrations, and ensuring a long operational life. As a premier supplier of industrial parts, we provide top-quality Spherical Roller Bearings that meet rigorous industry standards, guaranteeing reliability and performance in heavy-duty machinery.
Key Features of the 21309 Bearing
- Self-Aligning Design: Automatically compensates for angular misalignment between the shaft and housing, reducing wear and extending service life.
- High Load Capacity: Engineered to support extremely heavy radial loads and substantial axial loads in both directions.
- Double Row Rollers: Features two rows of symmetrical barrel rollers for maximum stability and load distribution.
- Robust Construction: Manufactured from high-grade bearing steel for superior durability and resistance to wear and fatigue.
- Optimized Roller Profile: The roller profile is designed to prevent stress peaks at the roller ends, ensuring smoother operation and longevity.
- Versatile Application Range: Ideal for a wide array of heavy industrial machinery where misalignment and heavy loads are prevalent.
Common Applications
- Mining and Construction: Used in crushers, vibrating screens, conveyor systems, and heavy-duty vehicles.
- Industrial Gearboxes: Provides reliable support for gears and shafts in large-scale transmission systems.
- Pulp and Paper Mills: Essential for rollers and processing equipment that operate under heavy loads and harsh conditions.
- Heavy-Duty Fans and Blowers: Accommodates shaft deflection in large industrial ventilation systems.
- Marine and Offshore Equipment: Suitable for propulsion systems, winches, and cranes where reliability is critical.
- Steel Manufacturing: Employed in continuous casting machines, rolling mills, and other high-temperature, high-load equipment.
- Wind Turbines: Used in the main shaft and gearbox assemblies to handle immense operational loads.
Benefits of Using the 21309 Bearing
- Enhanced Machine Reliability: Tolerates misalignment and shaft deflection, preventing premature failure and reducing machine downtime.
- Extended Service Life: The robust design and high load capacity ensure long-lasting performance even in extreme conditions.
- Reduced Maintenance Costs: The bearing's durability and self-aligning properties minimize the need for frequent replacements and repairs.
- Improved Operational Efficiency: Low-friction design contributes to smoother machinery operation and potential energy savings.
- High Performance in Harsh Environments: Capable of withstanding shock loads, vibrations, and contamination typical in heavy industry.
- Versatile Mounting Options: Can be mounted directly on a cylindrical shaft or on a tapered shaft using an adapter sleeve like the H 309.
