7311 BECBJ
Single Row Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Outer Ring Dimensions
Performance
Materials
Environment & Compliance
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7311 BECBJ Bearing Product Overview & Core Advantages
The 7311 BECBJ is a single row angular contact ball bearing engineered for high-performance applications requiring exceptional precision and reliability. This metric bearing is designed to accommodate combined loads, efficiently handling significant radial loads and unidirectional axial loads simultaneously. Its 40° contact angle provides superior axial load capacity and high rigidity, making it ideal for demanding operational conditions. Manufactured to a P6 (ABEC-3) tolerance class, it ensures precise running accuracy and is pre-lubricated for immediate use, offering a broad operating temperature range from -30°C to 110°C.
7311 BECBJ Bearing Model Code Explained, Specifications & Naming Convention
The model number 7311 BECBJ provides detailed technical specifications through its suffix codes. Below is a breakdown of its components:
- 7311: Standard designation indicating a medium series bearing with a 55 mm bore diameter.
- BE: Signifies an optimized internal design and a 40° contact angle, which enhances axial load capacity and high-speed performance.
- CB: Denotes a normal internal clearance and specific internal geometrical tolerances suitable for universal mounting arrangements.
- J: Indicates the use of a stamped steel cage (press-formed), which is lightweight and contributes to the bearing's high limiting speed.
The combination of these features results in a precision bearing optimized for high rigidity and stable operation under combined loads.
7311 BECBJ Bearing Structural Features & Performance Benefits
The 7311 BECBJ incorporates several key structural features that deliver distinct performance advantages:
- High Rigidity and Load Capacity: The single row design with a 40° contact angle provides robust support, enabling the bearing to handle high radial dynamic load ratings of 19125 lbf and radial static load ratings of 13500 lbf. This makes it exceptionally capable of managing combined loads.
- High-Speed Performance: The lightweight stainless steel cage (J suffix) minimizes centrifugal forces, allowing for a high limiting speed of 7,000 rpm. The optimized internal geometry further enhances its high-speed capability.
- Precision and Durability: Manufactured from chrome steel for both rings and balls, and compliant with P6 tolerance class, this bearing ensures long service life, dimensional stability, and precise operation in high-precision applications.
- Ready-to-Use Lubrication: The bearing comes pre-lubricated, facilitating immediate installation and initial operation without additional preparation.
7311 BECBJ Bearing Typical Application Areas
The 7311 BECBJ angular contact ball bearing is ideally suited for a wide range of industrial machinery and precision equipment where high rigidity and the ability to handle combined loads are critical. Common applications include:
- Machine Tool Spindles
- Industrial Pumps and Compressors
- Precision Gearboxes
- Agricultural Machinery
- Material Handling Systems
Its robust bearing dimensions (55 mm bore, 120 mm OD, 29 mm width) and performance characteristics make it a reliable component in demanding mechanical systems.
