QJ 1080 N2MA
Four-Point Contact Bearings Ball Bearings
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Part No.
Part No.
QJ 1080 N2MA
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
95 kg
Tolerance class
P6 (ABEC-3)
Seal type
Open
For load direction
Four Point Contact
Main Dimensions
Bore diameter
400 mm
Bore diameter tolerance
-0.03mm to 0
Outside diameter
600 mm
Outside diameter tolerance
-0.038mm to 0
Width
90 mm
Width tolerance
-0.05mm to 0
Chamfer dimension
5 mm
Distance from side face to load point
350 mm
Inner Ring Dimensions
Inner ring large-side shoulder diameter
470 mm
Outer Ring Dimensions
Shoulder diameter outer ring
530 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
203400 lbf
Radial static load rating
486000 lbf
Limiting speed
1.5 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
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In Stock
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QJ 1080 N2MA Bearing Product Overview & Core Advantages
The QJ 1080 N2MA is a four-point contact ball bearing designed for exceptional performance in demanding applications. This single-row bearing excels at simultaneously handling combined radial and axial loads from both directions, making it an extremely versatile and space-efficient solution. Manufactured to a P6 (ABEC-3) tolerance class, it guarantees high running accuracy and reliability. Its optimized internal geometry and robust construction contribute to its high load-carrying capacity and long service life, ideal for high-precision, heavy-duty machinery.
QJ 1080 N2MA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning |
|---|---|
| N2 | Indicates two machined circumferential grooves in the outer ring for lubrication and potentially for sensor mounting. |
| MA | Signifies that the bearing is lubricated with a specific high-performance grease suitable for the specified operating temperature range. |
QJ 1080 N2MA Bearing Structural Features & Performance Benefits
- Four-Point Contact Design: The unique raceway geometry allows a single bearing to support substantial combined loads (radial and bidirectional axial loads) with a compact cross-section, reducing the need for complex multi-bearing arrangements.
- High Load Capacity: With a radial dynamic load rating of 203,400 lbf and a radial static load rating of 486,000 lbf, this bearing is engineered for heavy-duty applications requiring high rigidity and durability.
- Precision Engineering: The P6 tolerance class ensures precise internal clearances and dimensional stability, which is critical for applications demanding high rotational accuracy and smooth operation.
- Robust Construction: Components made from chrome steel and a brass cage offer excellent strength, wear resistance, and reliable performance at the specified limiting speed of 1,500 rpm.
- Optimized Lubrication: The pre-lubrication with high-quality grease ensures immediate operational readiness and provides long-term protection, enhancing service life and reducing maintenance needs.
QJ 1080 N2MA Bearing Typical Application Areas
This bearing is ideally suited for heavy machinery and precision equipment where high load capacity and compact design are paramount. Key applications include:
- Industrial Gearboxes
- Large-Diameter Slewing Rings (e.g., for cranes, excavators)
- Heavy-Duty Pumps and Compressors
- Machine Tool Rotating Tables
- Wind Turbine Yaw and Pitch Systems
