QJ 314 N2MA
Four-Point Contact Bearings Ball Bearings
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Part No.
Part No.
QJ 314 N2MA
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
3.15 kg
Tolerance class
P6 (ABEC-3)
Seal type
Open
For load direction
Four Point Contact
Main Dimensions
Bore diameter
70 mm
Bore diameter tolerance
-0.012mm to 0
Outside diameter
150 mm
Outside diameter tolerance
-0.015mm to 0
Width
35 mm
Width tolerance
-0.05mm to 0
Chamfer dimension
2.1 mm
Distance from side face to load point
77 mm
Inner Ring Dimensions
Inner ring large-side shoulder diameter
89 mm
Outer Ring Dimensions
Shoulder diameter outer ring
123 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
45000 lbf
Radial static load rating
40500 lbf
Limiting speed
8 X 1000 rpm
Lubrication
Lubricated
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Brass
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 314 N2MA Bearing Product Overview & Core Advantages
The QJ 314 N2MA is a high-precision Four Point Contact Ball Bearing designed for demanding applications requiring exceptional rigidity and load capacity. This metric single row bearing is engineered to simultaneously support substantial radial loads and axial loads in both directions, making it an ideal compact solution. Manufactured to a P6 (ABEC-3) tolerance class, it delivers high running accuracy and reliability. Its optimized internal geometry and brass cage contribute to smooth operation, making it suitable for high-performance machinery.
QJ 314 N2MA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| QJ 314 | Denotes the basic bearing type: a Four Point Contact Ball Bearing with a 70mm bore diameter, 150mm outside diameter, and 35mm width. |
| N2 | Indicates two integral circlips (snap rings) on the outer ring, which facilitate simplified axial location within a housing. |
| MA | Signifies that the bearing is pre-lubricated with a specific high-temperature, high-speed grease suitable for the specified operating temperature range. |
QJ 314 N2MA Bearing Structural Features & Performance Benefits
- High Rigidity & Compact Design: The four point contact raceway design and single row construction provide a high degree of rigidity within a compact cross-section, enabling robust support in space-constrained applications.
- Superior Load Capacity: Engineered for combined loads, this bearing efficiently handles significant radial loads and bidirectional axial loads, with a dynamic load rating of 45,000 lbf and a static load rating of 40,500 lbf.
- Optimized for Performance: The brass cage ensures dimensional stability and reliable performance at the limiting speed of 8,000 rpm. The open seal type allows for optimal lubrication flow and heat dissipation in controlled environments.
- Simplified Installation: The inclusion of snap rings (N2) on the outer ring simplifies housing design and bearing mounting, reducing assembly time and cost.
- Pre-Lubricated for Immediate Use: Factory-filled lubrication (MA) ensures the bearing is ready for immediate installation and operation, reducing initial setup complexity.
QJ 314 N2MA Bearing Typical Application Areas
This bearing is ideally suited for applications requiring high precision and the ability to handle complex loading conditions. Key sectors include:
- Industrial Robotics: Used in robot arm joints and rotary units for precise movement under combined loads.
- Machine Tool Components: Applied in rotary tables, indexing heads, and slewing rings where high rigidity and accuracy are critical.
- Material Handling Equipment: Found in turntables and swivel mechanisms for cranes and conveyors.
- Aerospace Actuation Systems: Employed in control surface mechanisms and other high-reliability rotary systems.
- Precision Medical Equipment: Suitable for rotary stages in imaging and diagnostic devices.
