QJ 309 PHAS
Four-Point Contact Bearings Ball Bearings
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Part No.
Part No.
QJ 309 PHAS
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
No drawings available at the moment, will be launched soon
In Stock
Price available upon request.
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QJ 309 PHAS Bearing Product Overview & Core Advantages
The QJ 309 PHAS is a high-precision four-point contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and load handling capabilities. Engineered with a single-row construction and an open design, it is optimized to accommodate combined loads—simultaneously managing radial loads and axial loads from both directions. Its P6 (ABEC-3) tolerance class ensures superior running accuracy, making it ideal for high-reliability and precision machinery where dimensional stability and performance consistency are critical.
QJ 309 PHAS Bearing Model Code Explained, Specifications & Naming Convention
The model designation QJ 309 PHAS provides specific technical information:
- QJ: Denotes the bearing series as a four-point contact ball bearing.
- 309: Standard dimension series code indicating a 45 mm bore, 100 mm outside diameter, and 25 mm width.
- PHAS: Indicates special features. In this context, it specifies the Peek cage material and the bearing being supplied lubricated from factory.
QJ 309 PHAS Bearing Structural Features & Performance Benefits
- Four-Point Contact Design: The unique raceway geometry allows the bearing to support combined radial and axial loads from both directions with a single row of balls, resulting in a compact and space-saving solution.
- High Precision & Rigidity: Manufactured to P6 (ABEC-3) tolerance with precise bore and outside diameter tolerances, it provides excellent running accuracy and high system rigidity for stable operation.
- High-Speed Capability: The lightweight and durable Peek (Polyetheretherketone) cage ensures smooth operation and contributes to the high limiting speed of 12,000 rpm, reducing centrifugal forces and friction.
- Robust Load Capacity: With a dynamic load rating of 22,500 lbf and a static load rating of 18,675 lbf, it is built to handle significant loads in demanding environments.
- Pre-Lubricated & Wide Temperature Range: Factory-applied lubrication and a temperature range of -30°C to 110°C ensure immediate readiness for service and reliable performance across various operating conditions.
QJ 309 PHAS Bearing Typical Application Areas
The QJ 309 PHAS is ideally suited for applications requiring high precision and the ability to handle complex load combinations. Key industries and equipment include:
- Robotics and Automation: Used in robot arm joints and rotary actuators.
- Machine Tool Spindles: Provides high accuracy and rigidity in machining centers.
- Industrial Gearboxes: Supports shafts subject to radial and axial forces.
- Precision Turntables and Indexing Tables: Ensures smooth and precise rotation.
- Aerospace Actuation Systems: Where reliability and performance under combined loads are essential.
