QJ 319 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 319 N2PHAS Bearing Product Overview & Core Advantages
The QJ 319 N2PHAS is a four-point contact ball bearing designed for exceptional performance in demanding applications. This single row bearing excels at simultaneously handling combined radial loads and substantial axial loads from both directions. Manufactured to P6 (ABEC-3) tolerance class, it delivers high running accuracy and reliability. Its compact design, featuring a 45 mm width and a 95 mm bore, makes it an ideal solution for space-constrained, high-precision machinery requiring robust load capacity and dimensional stability.
QJ 319 N2PHAS Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning |
|---|---|
| QJ 319 | Denotes the bearing series and size (95mm bore, 200mm OD). |
| N2 | Indicates snap ring grooves on the outer ring for secure axial location in the housing. |
| P | Specifies the P6 tolerance class for high precision and running accuracy. |
| H | Signifies the use of a PEEK (Polyetheretherketone) cage, offering high strength, low weight, and excellent performance at high speeds and temperatures. |
| A | Represents a 30° contact angle, optimized for carrying significant axial loads. |
| S | Indicates the bearing is supplied with a standard, high-performance lubrication. |
QJ 319 N2PHAS Bearing Structural Features & Performance Benefits
Four-Point Contact Design: The unique raceway geometry allows a single row of balls to make contact at four points, enabling the bearing to support combined radial and axial loads from any direction with a single bearing, simplifying assembly and saving space.
High Load Capacity: With a dynamic load rating of 68,625 lbf and a static load rating of 76,500 lbf, this bearing is engineered for heavy-duty applications and long service life under significant stress.
High-Speed Capability: The lightweight and robust PEEK cage ensures stable operation and contributes to a high limiting speed of 6,000 rpm, making it suitable for high-speed applications.
Precision & Rigidity: The P6 tolerance class ensures minimal runout and vibration, which is critical for applications requiring high positional accuracy. The defined shoulder diameters and chamfer dimensions contribute to precise mounting and system rigidity.
Convenient Mounting: The outer ring snap ring grooves (N2) facilitate easy and secure axial positioning within the housing, reducing assembly complexity.
QJ 319 N2PHAS Bearing Typical Application Areas
The QJ 319 N2PHAS is ideally suited for a wide range of industrial machinery where high precision, high load capacity, and compact design are paramount. Key application areas include:
- Industrial Robots (e.g., Robotic arms and rotary joints)
- Machine Tools (e.g., Rotary tables, indexing heads)
- Wind Turbines (e.g., Yaw and pitch control systems)
- Material Handling Equipment (e.g., Slewing rings for cranes and excavators)
- Medical Equipment (e.g., High-precision rotary stages in imaging systems)
- Aerospace Actuation Systems
