Product Overview: The 21318 Spherical Roller Bearing
The 21318 Spherical Roller Bearing is a high-performance component engineered to excel in the most demanding industrial environments. With dimensions of 90x190x43mm, this bearing is a key part of our 21300 Series, renowned for its robustness and reliability. It features two rows of symmetrical barrel rollers that align themselves within a spherical outer ring raceway. This innovative design allows the bearing to accommodate significant angular misalignment of the shaft relative to the housing, as well as shaft deflection during operation, making it an indispensable solution for heavy-duty applications.
Designed to handle very high radial loads and substantial axial loads in both directions, the 21318 bearing is manufactured from premium-grade steel for maximum durability and service life. Its internal geometry is optimized to reduce friction and wear, ensuring smooth and efficient operation even under severe conditions. Whether you are operating mining equipment, industrial gearboxes, or paper mills, this bearing provides the strength and adaptability required. Explore our full range of Spherical Roller Bearings to find the perfect solution for your machinery.
Key Features of the 21318 Bearing
- Superior Self-Aligning Capability: Automatically compensates for dynamic and static misalignment, reducing stress on the shaft and extending the life of machine components.
- High Load-Carrying Capacity: The double-row roller design provides exceptional capacity for both radial and axial loads, making it ideal for heavy-duty tasks.
- Robust Construction: Manufactured from high-purity, hardened bearing steel to withstand extreme shock loads and harsh operating conditions.
- Optimized for Performance: Engineered for low friction and minimal heat generation, which improves operational efficiency and longevity.
- Versatile Mounting Options: Can be mounted directly onto a tapered shaft or on a cylindrical shaft using an adapter sleeve, such as the H 318.
- Dimensional Stability: Heat-treated to ensure stability and performance across a wide range of operating temperatures.
Common Applications
- Mining and Construction: Widely used in rock crushers, vibrating screens, conveyor systems, and heavy earth-moving equipment.
- Industrial Gearboxes: Provides reliable support for gears and shafts in large-scale power transmission systems.
- Pulp and Paper Machinery: Essential for rollers in press sections, calenders, and other equipment exposed to high loads and moisture.
- Steel Manufacturing: Utilized in continuous casting machines, rolling mills, and other steel processing equipment.
- Wind Turbines: Supports the main rotor shaft, enduring fluctuating loads and demanding environmental conditions.
- Marine Propulsion Systems: Employed in propeller shafts and gearboxes where reliability is critical.
- Fans and Blowers: Ideal for large industrial ventilation systems where shaft deflection can occur.
Benefits of Using the 21318 Bearing
- Enhanced Machine Reliability: Its ability to handle misalignment and heavy loads prevents premature failures and increases overall equipment uptime.
- Extended Service Life: The durable materials and low-friction design significantly reduce wear, leading to a longer operational lifespan.
- Reduced Maintenance Costs: The bearing's robustness and reliability minimize the need for frequent inspections, repairs, and replacements.
- Improved Operational Efficiency: Smooth performance and low friction contribute to lower energy consumption and better machine output.
- Simplified Installation: The self-aligning nature eases the mounting process, saving time and labor, especially in complex assemblies.
- Consistent Performance: Delivers dependable performance even in applications with high levels of contamination, vibration, and shock loads.
