QJ 202 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 202 N2MA Bearing Product Overview & Core Advantages
The QJ 202 N2MA is a metric single row four-point contact ball bearing engineered for applications requiring exceptional precision and load handling capabilities. This bearing is specifically designed to simultaneously accommodate combined radial and axial loads from both directions, making it an ideal solution for compact spaces. Manufactured to a P6 (ABEC-3) tolerance class, it delivers high running accuracy and reliability. Its open design and pre-lubrication ensure optimal performance in demanding operational environments.
QJ 202 N2MA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| QJ 202 | Basic bearing designation, indicating a four-point contact ball bearing with a 15mm bore diameter. |
| N2 | Identifies specific internal design features related to the contact angle and raceway geometry. |
| MA | Indicates the bearing is pre-lubricated with a specific high-performance grease suitable for the specified temperature range. |
QJ 202 N2MA Bearing Structural Features & Performance Benefits
Four-Point Contact Design: The unique raceway geometry allows the bearing to handle combined radial and axial loads in both directions with a single bearing row, offering a compact and space-saving solution.
High Load Capacity: With a dynamic load rating of 2858 lbf and a static load rating of 1868 lbf, this bearing is built for demanding applications requiring robust performance.
Precision & High-Speed Capability: Manufactured to P6 tolerance and featuring a brass cage, it ensures stable operation and is capable of running at a limiting speed of 36,000 rpm.
Material & Construction: Constructed from chrome steel for both rings and balls, it provides high durability and wear resistance. The open design facilitates custom lubrication regimes if required.
QJ 202 N2MA Bearing Typical Application Areas
The QJ 202 N2MA is ideally suited for high-precision and high-speed machinery, including:
- Machine Tool Spindles
- Industrial Robots and Manipulators
- Precision Gearboxes
- Pumps and Compressors
- Aerospace Actuation Systems
