QJ 306 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 306 N2PHAS Bearing Product Overview & Core Advantages
The QJ 306 N2PHAS is a Four Point Contact Ball Bearing, engineered for applications requiring high precision and the ability to handle combined loads. Its unique design allows it to simultaneously support significant radial loads and axial loads in both directions, making it an exceptionally compact and space-saving solution. Manufactured to a P6 (ABEC-3) tolerance class, this bearing delivers reliable performance in high-accuracy and high-reliability scenarios. The use of a Peek cage and pre-lubrication further enhances its suitability for demanding operational conditions.
QJ 306 N2PHAS Bearing Model Code Explained, Specifications & Naming Convention
- QJ: Denotes the bearing series as a Four Point Contact Ball Bearing.
- 306: Specifies the standard bore diameter (30 mm) and dimension series.
- N2: Indicates the bearing is pre-lubricated with a specific, high-performance grease.
- P: Signifies the Peek (Polyetheretherketone) cage material, offering high strength, low weight, and excellent performance at high speeds.
- H: Represents the stabilized temperature range for the bearing, suitable for operations from -30°C to 110°C.
- A: Designates a contact angle of 30 degrees, optimized for carrying axial loads.
- S: Identifies the bearing's precision tolerance class of P6 (ABEC-3).
QJ 306 N2PHAS Bearing Structural Features & Performance Benefits
Four Point Contact Design: The raceway geometry creates four points of contact between the balls and raceways. This design enables the bearing to support combined radial and axial loads from any direction with a single bearing, simplifying assembly and reducing space requirements.
High Precision & Rigidity: Built to a P6 tolerance class, the bearing ensures minimal runout and consistent performance, contributing to system accuracy and high rigidity.
High-Speed Capability: The lightweight and robust Peek cage minimizes centrifugal forces, reduces friction, and allows for a high limiting speed of 17,000 rpm, making it a capable high-speed bearing.
Optimized for Performance: The bearing is pre-lubricated for long service life and is designed with a specific contact angle (A-suffix) to maximize axial load-carrying capacity.
QJ 306 N2PHAS Bearing Typical Application Areas
The QJ 306 N2PHAS is ideally suited for a wide range of precision machinery and equipment, including:
- Machine Tool Spindles
- Industrial Robots and Manipulators
- Precision Gearboxes
- Turntables and Indexing Tables
- Aerospace Actuation Systems
