Product Overview: The 21316 Spherical Roller Bearing
The 21316 Spherical Roller Bearing is a high-capacity, self-aligning bearing designed to excel in the most demanding industrial environments. With principal dimensions of an 80mm bore diameter, 170mm outer diameter, and 39mm thickness, this component is a key part of our 21300 Series and broader Spherical Roller Bearings collection. Its design features two rows of symmetrical barrel-shaped rollers in a common sphered outer ring raceway. This configuration allows the bearing to tolerate significant angular misalignment between the shaft and housing, making it indispensable for applications with shaft deflection or mounting inaccuracies. Engineered for reliability, the 21316 is the go-to solution for heavy radial and axial loads acting in both directions.
Key Features of the 21316 Bearing
- Excellent Misalignment Compensation: The spherical internal design allows it to accommodate both static and dynamic angular misalignment, reducing stress on the shaft and extending machine life.
- High Load-Carrying Capacity: Engineered with two rows of rollers to handle extremely heavy radial loads and substantial axial loads in either direction.
- Robust and Durable Construction: Manufactured from high-purity, ultra-clean bearing steel for superior fatigue strength and wear resistance, ensuring a long service life.
- Low-Friction Operation: The optimized internal geometry and roller conformity minimize friction and heat generation, leading to more efficient operation.
- Versatile Mounting Options: Typically available with a cylindrical or tapered bore, allowing for flexible mounting methods using adapter sleeves or withdrawal sleeves.
- High Operational Reliability: Designed to perform consistently under conditions of heavy loads, shock, vibration, and contamination.
Common Applications
The 21316 bearing's robust design makes it suitable for a wide range of heavy-duty industrial machinery, including:
- Mining and Construction: Used in rock crushers, vibrating screens, conveyor systems, and heavy earth-moving equipment.
- Pulp and Paper Mills: Essential for rollers in paper machines, calendars, and processing equipment where heavy loads and moisture are common.
- Industrial Gearboxes: Provides reliable support for gears and shafts in large-scale transmission systems.
- Wind Turbines: Supports the main shaft and gearbox components, enduring variable loads and harsh environmental conditions.
- Steel Manufacturing: Utilized in continuous casting machines, rolling mills, and other high-temperature, high-load applications.
- Marine and Offshore: Applied in propulsion systems, winches, and cranes where reliability is critical.
- Large Industrial Fans and Blowers: Accommodates shaft deflection in high-speed air-handling units.
Benefits of Using the 21316 Bearing
- Enhanced Machine Uptime: Its ability to handle misalignment and heavy loads reduces the likelihood of premature failure, leading to fewer breakdowns and more productivity.
- Reduced Maintenance Costs: The long service life and high reliability minimize the need for frequent replacements and maintenance interventions.
- Improved Performance in Harsh Conditions: Maintains operational integrity even when subjected to shock loads, vibration, and environmental contaminants.
- Simplified Assembly: The self-aligning nature can simplify the design and assembly of machinery by relaxing the need for perfect alignment.
- Increased Load Capacity: Allows for more compact machine designs by offering a higher load density compared to other bearing types of similar size.
