7311 ACCBM
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 ACCBM Bearing Product Overview & Core Advantages
The 7311 ACCBM is a single row angular contact ball bearing engineered for applications requiring high precision and reliable performance under combined loads. This metric bearing features a 25° contact angle and P6 (ABEC-3) tolerance class, making it ideal for arrangements where high rigidity and precise rotational accuracy are critical. Its optimized internal geometry enables it to accommodate significant axial loads in one direction simultaneously with radial loads, while the brass cage ensures stable operation at the limiting speed of 11,000 rpm. The open design allows for customized sealing and lubrication solutions tailored to specific operational requirements.
7311 ACCBM Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7311 | Basic bearing designation indicating 55 mm bore diameter, 120 mm outside diameter, and 29 mm width |
| A | 25° contact angle design optimized for high axial load capacity |
| CC | Modified internal design with optimized internal clearance and raceway geometry |
| BM | Brass machined cage providing excellent high-speed performance and stability |
7311 ACCBM Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The single row angular contact design with 25° contact angle provides exceptional stiffness and can handle combined radial and axial loads simultaneously. With dynamic load rating of 21,712 lbf and static load rating of 15,075 lbf, this bearing offers reliable performance in demanding applications.
Precision Engineering: Manufactured to P6 (ABEC-3) tolerance class with precise bore diameter tolerance of -0.012mm to 0 and outside diameter tolerance of -0.013mm to 0, ensuring consistent performance and easy installation.
High-Speed Capability: The brass machined cage (BM) combined with the optimized internal geometry enables stable operation at limiting speeds up to 11,000 rpm, making it suitable for high-speed applications.
Material Quality: Constructed from chrome steel for both rings and balls, providing excellent wear resistance and durability across the temperature range of -30° to 110°C.
7311 ACCBM Bearing Typical Application Areas
- Machine tool spindles requiring high precision and rigidity
- High-speed pumps and compressors where combined loads are present
- Precision gearboxes and transmission systems
- Industrial motors operating at elevated speeds
- Material handling equipment requiring reliable bearing performance
- Robotics and automation systems demanding precise motion control
