Product Overview: The 21304 Spherical Roller Bearing
The 21304 is a high-capacity Spherical Roller Bearing, a key component within our 21300 Series. Engineered with dimensions of 20x52x15mm (Bore x Outer Diameter x Thickness), this bearing is designed to withstand severe operating conditions, including heavy radial loads, moderate axial loads in both directions, and significant shaft misalignment. Its internal design features two rows of symmetrical barrel rollers and a common sphered raceway in the outer ring, which allows for angular misalignment of the shaft relative to the housing.
As a premier supplier of industrial components, we ensure our 21304 bearings meet rigorous industry standards. This makes them exceptionally reliable for demanding applications where durability and performance are critical. The robust construction and self-aligning capability reduce maintenance needs and extend the service life of machinery. Explore our complete range of Spherical Roller Bearings to find the ideal solution for your heavy-duty industrial needs.
Key Features of the 21304 Bearing
- Self-Aligning Capability: The spherical outer raceway allows the bearing to tolerate both static and dynamic misalignment, reducing stress on the shaft and housing.
- High Load Capacity: Engineered with two rows of barrel rollers, it provides excellent capacity for heavy radial loads and moderate axial loads from either direction.
- Robust Construction: Manufactured from high-quality bearing steel for superior durability, wear resistance, and performance under heavy shock loads.
- Optimized Internal Design: The geometry of the rollers and raceways is designed to minimize friction and heat generation, ensuring efficient operation.
- Versatile Mounting: Can be mounted directly onto a cylindrical shaft or, with an H 204 adapter sleeve, onto a stepped shaft.
- Industry Standard Dimensions: Produced to globally recognized specifications, ensuring interchangeability with other standard bearings.
Common Applications of 21304 Bearings
- Mining and Construction Equipment: Ideal for crushers, vibrating screens, and conveyor systems where heavy loads and misalignment are common.
- Pulp and Paper Machinery: Used in rollers and presses that operate under harsh conditions and require high reliability.
- Industrial Gearboxes: Provides robust support for gears and shafts, accommodating deflection under heavy torque.
- Large Fans and Blowers: Ensures smooth operation in industrial ventilation systems where shaft alignment can be challenging.
- Agricultural Machinery: Suitable for demanding applications in harvesters, tractors, and other heavy-duty farm equipment.
- Steel Manufacturing: Employed in rolling mills and continuous casting machines that experience extreme loads and temperatures.
- Marine and Offshore Applications: Used in propulsion systems and deck machinery requiring high-load capacity and resistance to harsh environments.
Benefits of Using the 21304 Bearing
- Increased Machine Uptime: The bearing's ability to handle misalignment and heavy loads reduces the risk of premature failure and costly downtime.
- Extended Service Life: High-quality materials and design result in a longer operational lifespan, even in challenging environments.
- Reduced Maintenance Costs: The self-aligning feature simplifies installation and reduces the need for frequent adjustments and replacements.
- Enhanced Operational Reliability: Provides stable and consistent performance, contributing to the overall reliability of the machinery.
- Improved Efficiency: Low-friction design helps to minimize energy loss and improve the mechanical efficiency of the system.
