7048 BGM
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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7048 BGM Bearing Product Overview & Core Advantages
The 7048 is a single row angular contact ball bearing engineered for high-precision applications requiring superior performance under combined loads. This metric bearing is distinguished by its ability to accommodate significant axial loads in one direction alongside radial loads, thanks to its defined 40° contact angle. Manufactured to a P6 (ABEC-3) tolerance class, it ensures high running accuracy and reliability. Its open design and brass cage contribute to its suitability for high-speed operation up to 1,900 rpm, making it an ideal component for demanding industrial environments.
7048 BGM Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning | Performance Implication |
|---|---|---|
| 7048 | Basic bearing designation, defining the core dimensions (Bore: 240mm, OD: 360mm, Width: 56mm). | Specifies the standard size and load-carrying capacity. |
| Open (No Seal) | No integral seals or shields on the bearing. | Allows for higher speeds and custom lubrication systems, but requires a clean operating environment. |
| P6 Tolerance | Dimensional and running accuracy per ISO P6 class (equivalent to ABEC-3). | Ensures precise shaft positioning, reduced vibration, and smooth operation for high-precision applications. |
7048 BGM Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The single row angular contact design with a 40° contact angle provides excellent rigidity and is optimized to support high combined radial and axial loads in one direction. The robust chrome steel construction ensures durability under heavy loads, with a dynamic load rating of 58,500 lbf and a static load rating of 84,375 lbf.
- Optimized High-Speed Performance: The brass cage offers superior strength and guidance at high rotational speeds, contributing to the bearing's limiting speed of 1,900 rpm. The open design minimizes friction and heat generation.
- Precision Engineering: Manufactured to P6 tolerance, this bearing guarantees minimal runout and high dimensional stability, which is critical for applications requiring high precision and smooth operation.
- Wide Operating Range: With a temperature range of -30°C to 110°C and compliance with RoHS and REACH, the bearing is suitable for use in various industrial conditions.
7048 BGM Bearing Typical Application Areas
The 7048 angular contact ball bearing is ideally suited for machinery and systems that demand high precision, speed, and reliable performance under combined loads. Key application areas include:
- Machine Tool Spindles
- High-Speed Pumps and Compressors
- Precision Gearboxes
- Industrial Fans and Blowers
- Material Handling Equipment
