QJ 315 N2PHAS
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 315 N2PHAS Bearing Product Overview & Core Advantages
The QJ 315 N2PHAS is a Four Point Contact Ball Bearing designed for applications requiring exceptional precision and load-handling capabilities. This single row bearing is engineered to simultaneously support substantial radial loads and axial loads in both directions, making it an ideal solution for compact, high-rigidity designs. Its P6 (ABEC-3) tolerance class ensures high running accuracy, while the advanced Peek cage contributes to its high-speed performance and stability. This bearing is pre-lubricated for immediate use and offers reliable operation across a wide temperature range.
QJ 315 N2PHAS Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| N2 | Two-Piece Machined Brass Cage | Provides excellent guidance and stability at high speeds, suitable for demanding operating conditions. |
| P | Glass Fiber Reinforced Polyamide (Nylon) Cage | Offers good strength-to-weight ratio, reduced friction, and is suitable for high-speed applications. |
| H | Hardened Bearings | Increases bearing durability and resistance to wear in challenging environments. |
| A | Optimized Internal Design | Enhances load capacity and performance characteristics. |
| S | Stainless Steel Ring Material | Provides superior corrosion resistance for use in harsh or washdown environments. |
QJ 315 N2PHAS Bearing Structural Features & Performance Benefits
Four Point Contact Design: The unique raceway geometry allows the QJ 315 N2PHAS to handle combined radial and axial loads efficiently. The contact angle is optimized to manage thrust loads from both directions without the need for a second bearing, simplifying assembly and saving space.
High Rigidity & Load Capacity: With a radial dynamic load rating of 48,600 lbf and a static load rating of 45,000 lbf, this bearing provides robust support for heavy loads and moments. The hardened rings and balls (from suffix 'H') further enhance its load-carrying capability and service life.
High-Speed Performance: The combination of a lightweight Peek cage and precision P6 tolerance minimizes friction and vibration, enabling a high limiting speed of 7,500 rpm. This makes it suitable for applications requiring rapid rotation.
Pre-Lubricated & Ready for Use: The bearing comes pre-lubricated, facilitating easy installation and ensuring immediate, reliable operation. Its specified temperature range of -30°C to 110°C ensures performance stability across various operating conditions.
QJ 315 N2PHAS Bearing Typical Application Areas
The QJ 315 N2PHAS is ideally suited for high-performance machinery and precision equipment, including:
- Industrial Robotics: Used in robot arm joints and rotary units where compact size and high moment load capacity are critical.
- Machine Tool Spindles: Provides high precision and rigidity for milling, grinding, and turning centers.
- Turntables and Indexing Tables: Offers accurate positioning and reliable support for rotational motion.
- Aerospace Actuation Systems: Its reliability and performance under combined loads make it suitable for flight control mechanisms.
- Medical Equipment: Used in CT scanners and other high-speed rotating medical devices requiring smooth and precise operation.
