70876 AMB
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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70876 AMB Bearing Product Overview & Core Advantages
The 70876 AMB is a single row angular contact ball bearing designed for applications requiring high precision and reliable performance under combined loads. This metric bearing features a 30° contact angle, enabling it to support significant radial loads and unidirectional axial loads simultaneously. Manufactured to P6 (ABEC-3) tolerance class, it delivers exceptional running accuracy, making it ideal for high-speed applications with a limiting speed of 1,400 rpm. Its open design allows for customized lubrication solutions, while the brass cage ensures stable operation at high rotational speeds.
70876 AMB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 70876 | Basic bearing number indicating specific dimensions (380mm bore, 480mm OD) |
| AMB | Manufacturer-specific designation for angular contact bearing configuration |
| Open | No seals or shields, allowing for custom lubrication and high-speed operation |
| P6 | Tolerance class equivalent to ABEC-3, ensuring high precision |
70876 AMB Bearing Structural Features & Performance Benefits
Optimized Contact Design: The 30° contact angle provides optimal load distribution, enabling the bearing to handle both substantial radial dynamic load rating of 42,750 lbf and unidirectional axial loads effectively.
High-Speed Capability: The brass cage construction ensures dimensional stability and reduced friction at high rotational speeds, supporting operations up to 1,400 rpm while maintaining precision.
Precision Engineering: Manufactured to P6 tolerance class with tight dimensional controls (bore tolerance: -0.03mm to 0), this bearing delivers exceptional running accuracy and minimal vibration.
Robust Material Selection: Constructed from chrome steel for both rings and balls, providing high hardness, wear resistance, and extended service life under demanding conditions.
Thermal Stability: Operating temperature range of -30° to 110°C ensures reliable performance across various environmental conditions.
70876 AMB Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers requiring accurate rotational performance
- Industrial Pumps: Centrifugal and process pumps handling combined radial and axial loads
- Precision Gearboxes: Power transmission systems demanding high-speed capability and accuracy
- Robotics and Automation: Robotic joints and positioning systems requiring precise motion control
- Specialized Machinery: Printing equipment, textile machinery, and other industrial applications needing reliable angular contact bearings
