QJ 1276 N2MA
Four-Point Contact Bearings Ball Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Outer Ring Dimensions
Performance
Materials
Environment & Compliance
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QJ 1276 N2MA Bearing Product Overview & Core Advantages
The QJ 1276 N2MA is a Four Point Contact Ball Bearing designed for applications requiring exceptional load capacity and precision. This metric single row bearing excels at simultaneously handling combined radial and axial loads from both directions, making it ideal for heavy-duty and high-precision machinery. Its P6 (ABEC-3) tolerance class ensures reliable performance in demanding operational environments, while its robust construction provides outstanding rigidity and operational stability.
QJ 1276 N2MA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning |
|---|---|
| N2 | Indicates specific internal design modifications for optimized load distribution and performance |
| MA | Signifies the bearing is pre-lubricated with high-performance grease suitable for the specified temperature range |
QJ 1276 N2MA Bearing Structural Features & Performance Benefits
Four Point Contact Design: The unique raceway geometry enables the bearing to support substantial combined radial and axial loads in both directions with a single bearing row, offering a compact solution.
High Load Capacity: With a radial dynamic load rating of 263,250 lbf and a radial static load rating of 641,250 lbf, this bearing is engineered for heavy-load applications.
Precision Performance: Manufactured to P6 (ABEC-3) tolerance class with a brass cage for stable operation at the limiting speed of 1,400 rpm.
Durability & Reliability: Constructed from chrome steel for both rings and balls, ensuring excellent wear resistance and long service life within the operating temperature range of -30°C to 110°C.
QJ 1276 N2MA Bearing Typical Application Areas
- Industrial Gearboxes and heavy power transmission systems
- Large Rotating Machinery such as industrial fans and blowers
- Construction Equipment including cranes and excavators
- Mining Machinery requiring high load capacity and reliability
- Wind Turbine pitch and yaw control systems
