QJ 309 N2PHAS
Four-Point Contact Bearings Ball Bearings
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Part No.
Part No.
QJ 309 N2PHAS
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
1.05 kg
Tolerance class
P6 (ABEC-3)
Seal type
Open
For load direction
Four Point Contact
Main Dimensions
Bore diameter
45 mm
Bore diameter tolerance
-0.01mm to 0
Outside diameter
100 mm
Outside diameter tolerance
-0.013mm to 0
Width
25 mm
Width tolerance
-0.05mm to 0
Chamfer dimension
1.5 mm
Distance from side face to load point
51 mm
Inner Ring Dimensions
Inner ring large-side shoulder diameter
58 mm
Outer Ring Dimensions
Shoulder diameter outer ring
81.2 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
22500 lbf
Radial static load rating
18675 lbf
Limiting speed
12 X 1000 rpm
Lubrication
Lubricated
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Peek
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
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In Stock
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QJ 309 N2PHAS Bearing Product Overview & Core Advantages
The QJ 309 N2PHAS is a high-precision Four Point Contact Ball Bearing designed for applications requiring exceptional rigidity and the ability to handle combined loads. This single row bearing can simultaneously support substantial radial loads and axial loads in both directions, making it an ideal, compact solution for high-precision machinery. Manufactured to a P6 (ABEC-3) tolerance class and featuring a high-performance PEEK cage, it delivers reliable operation in demanding environments.
QJ 309 N2PHAS Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| QJ 309 | Denotes the basic bearing series and size (45mm bore, 100mm OD, 25mm width). |
| N2 | Indicates snap ring grooves on the outer ring, facilitating secure axial location within a housing. |
| P | Signifies a PEEK (Polyetheretherketone) cage, contributing to low friction, high-speed capability, and suitability in a wide temperature range. |
| HA | Indicates the bearing is pre-lubricated. |
| S | Specifies the use of a special heat-stabilized bearing steel for stable operation at elevated temperatures. |
QJ 309 N2PHAS Bearing Structural Features & Performance Benefits
- Four Point Contact Design: The unique raceway geometry allows a single row bearing to handle combined radial and bidirectional axial loads efficiently, resulting in a compact and lightweight design.
- High Rigidity & Load Capacity: The optimized contact angle and robust construction provide high rigidity, with a dynamic load rating of 22,500 lbf and a static load rating of 18,675 lbf.
- High-Speed Performance: The lightweight and durable PEEK cage minimizes centrifugal forces, enabling a high limiting speed of 12,000 rpm.
- Precision & Stability: Manufactured to P6 tolerance and from heat-stabilized steel, this bearing ensures precise running accuracy and dimensional stability across its operating temperature range of -30°C to 110°C.
- Easy Installation: The outer ring snap ring grooves (N2) simplify bearing mounting and axial positioning within the housing.
QJ 309 N2PHAS Bearing Typical Application Areas
The QJ 309 N2PHAS is engineered for high-performance applications, including:
- Machine Tool Spindles
- Robotic Arms and Precision Gearboxes
- High-Speed Pumps and Compressors
- Aerospace Actuators and Control Systems
- Medical and Semiconductor Manufacturing Equipment
