Product Overview: The 21311 Spherical Roller Bearing
The 21311 Spherical Roller Bearing is a high-capacity component engineered to perform in the most demanding industrial applications. With dimensions of 55x120x29mm, this bearing is a key part of our 21300 Series of Spherical Roller Bearings. It is specifically designed to handle very heavy radial loads and significant axial loads in both directions. Its defining feature is the spherical raceway in the outer ring, which allows it to accommodate shaft deflection and misalignment between the shaft and housing, ensuring continued operation without compromising performance.
Manufactured from high-quality bearing steel, the 21311 bearing offers exceptional durability and reliability. The internal design, featuring two rows of symmetrical barrel-shaped rollers, provides a combination of high load-carrying capacity and the ability to self-align, making it an indispensable part for heavy machinery where precision and resilience are critical.
Key Features of the 21311 Bearing
- High Load Capacity: Designed with two rows of rollers to support extremely heavy radial and axial loads.
- Self-Aligning Capability: The spherical outer ring raceway compensates for angular misalignment and shaft deflection.
- Robust Construction: Made from premium-grade bearing steel for superior wear resistance and long service life under harsh conditions.
- Symmetrical Barrel Rollers: Optimized internal geometry ensures even load distribution and reduces stress concentrations.
- Low Operating Friction: Engineered for smooth performance, which minimizes heat generation and energy consumption.
- Versatile Mounting: Can be used with an adapter sleeve such as the H 311 for easy mounting on commercial shafting.
Common Applications
- Mining and Construction: Used in vibrating screens, crushers, conveyor belt rollers, and heavy earth-moving equipment.
- Pulp and Paper Mills: Essential for rollers in paper machines, calendars, and presses where heavy loads and moisture are present.
- Steel Manufacturing: Found in continuous casting machines, rolling mill stands, and other high-temperature, high-load equipment.
- Industrial Gearboxes: Provides reliable support for gears and shafts in large-scale power transmission systems.
- Wind Turbines: Used in main shafts and gearboxes to handle the immense and fluctuating loads.
- Marine Propulsion Systems: Suitable for propeller shafts and other critical marine applications.
- Agricultural Machinery: Employed in heavy-duty equipment like combine harvesters and large tractors.
Benefits of Using the 21311 Bearing
- Enhanced Machine Reliability: Its ability to handle misalignment and heavy loads prevents premature failure and reduces machine downtime.
- Extended Service Life: The durable materials and robust design ensure longevity even in contaminated or high-stress environments.
- Reduced Maintenance Costs: The bearing's resilience and long life minimize the need for frequent replacements and repairs.
- Improved Operational Efficiency: Low-friction design contributes to smoother operation and better energy efficiency of the machinery.
- Versatility in Heavy Industry: A single bearing type can be used across a wide range of heavy-duty applications, simplifying inventory.
- Accommodates Shaft Deflection: Maintains performance even when the shaft bends under heavy operational loads, protecting other components.
