SKF Bearings 6311 Bearing

The SKF 6311 Bearing is a high-performance deep groove ball bearing engineered for heavy-duty industrial applications, particularly within HVACR motor and pump systems. Designed with a 55mm inside diameter and 120mm outside diameter, this SKF Explorer class component is optimized for high-speed operation, featuring a reference speed of 12,000 r/min and a limiting speed of 8,000 r/min. Its uncoated steel cage and single-row construction provide the structural integrity required to manage both radial and axial loads simultaneously. This specific 6311 open bearing is built with a standard C0 internal clearance, ensuring precise shaft alignment and minimal vibration for critical equipment like centrifugal pumps, fans, and large electric motors. With a dynamic load rating of 74.1 kN and a static load rating of 45 kN, it offers the robustness needed for high-demand contractor environments where equipment reliability is paramount.

• High Load Capacity: Optimized internal geometry supports a basic dynamic load rating of 74.1 kN for long-term reliability in industrial HVACR motors.
• Precision Tolerance: Manufactured to SKF Explorer standards, ensuring low noise, low vibration, and superior thermal stability.
• Versatile Application: Deep raceway grooves accommodate axial and radial loads in both directions, making it compatible with various pump and compressor designs.
• Operational Efficiency: Low friction design reduces energy consumption and heat generation during high-speed rotations.
• Steel Cage Durability: The pressed steel cage ensures consistent ball spacing and reliable performance under high operating temperatures.

Is this bearing suitable for high-speed HVAC fan motors?
Yes, its 8,000 r/min limiting speed and deep groove design make it an excellent choice for high-speed fan and blower applications requiring low vibration.

What is the difference between C0 and C3 clearance for this part?
This unit features C0 internal clearance, which is the standard radial clearance for general applications. C3 clearance offers more room for thermal expansion, but C0 provides tighter precision for standard operating temperatures.

Can this open bearing be used in contaminated environments?
As an open closure bearing, it is designed for use in housings where an external lubricant supply (like grease or oil) and existing seals are present to protect the internal components.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.