QJ 307 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 307 N2PHAS Bearing Product Overview & Core Advantages
The QJ 307 N2PHAS is a Four Point Contact Ball Bearing designed for exceptional performance in demanding applications. This precision bearing is engineered to simultaneously support combined loads, including radial loads and axial loads in both directions, within a compact single row design. Manufactured to a P6 (ABEC-3) tolerance class, it offers high running accuracy and reliability. Its construction with a Peek cage and pre-lubrication ensures smooth operation at high speeds, making it an ideal solution for applications requiring high rigidity and precise motion control.
QJ 307 N2PHAS Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning | Advantage |
|---|---|---|
| N2 | Snap ring groove on the outer ring | Facilitates secure axial location and simplifies bearing housing design. |
| P | Enhanced internal geometry (contact angle) | Optimized for handling significant axial loads from both directions. |
| H | High thrust capacity design | Increased performance under heavy axial loading conditions. |
| A | Optimized internal design | Improves load distribution and overall bearing performance. |
| S | Stainless steel components | Enhances corrosion resistance for use in challenging environments. |
QJ 307 N2PHAS Bearing Structural Features & Performance Benefits
- Four Point Contact Design: The unique raceway geometry allows the QJ 307 N2PHAS to support combined radial and axial loads from both directions with a single bearing, simplifying assembly and saving space.
- High Rigidity & Load Capacity: The robust single row construction and chrome steel rings provide high rigidity. With a dynamic load rating of 14,400 lbf and a static load rating of 11,475 lbf, it is built for demanding applications.
- High-Speed Performance: The lightweight and durable Peek cage minimizes centrifugal forces, contributing to a high limiting speed of 15,000 rpm. The pre-lubrication ensures consistent performance at these elevated speeds.
- Precision & Reliability: Manufactured to a P6 tolerance class, this bearing guarantees high running accuracy and low vibration, which is critical for precision machinery.
- Simplified Mounting: The inclusion of a snap ring groove (N2 suffix) on the outer ring allows for easy axial positioning and secure retention within the housing.
QJ 307 N2PHAS Bearing Typical Application Areas
The QJ 307 N2PHAS is ideally suited for a wide range of industrial applications where high precision, compact design, and the ability to handle combined loads are paramount. Key sectors and equipment include:
- Robotics and Automation: Robot arm joints, rotary actuators.
- Machine Tools: Rotary tables, indexing heads, and high-precision spindles.
- Aerospace & Defense: Actuation systems, radar platforms, and guidance systems.
- Medical Equipment: CT scanners, precision surgical robots.
- Industrial Pumps and Compressors: Where axial and radial loads are present.
