QJ 1260 N2MA
Four-Point Contact Bearings Ball Bearings
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Part No.
Part No.
QJ 1260 N2MA
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
105 kg
Tolerance class
P6 (ABEC-3)
Seal type
Open
For load direction
Four Point Contact
Main Dimensions
Bore diameter
300 mm
Bore diameter tolerance
-0.025mm to 0
Outside diameter
540 mm
Outside diameter tolerance
-0.038mm to 0
Width
98 mm
Width tolerance
-0.05mm to 0
Chamfer dimension
5 mm
Distance from side face to load point
420 mm
Inner Ring Dimensions
Inner ring large-side shoulder diameter
392 mm
Outer Ring Dimensions
Shoulder diameter outer ring
448 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
187200 lbf
Radial static load rating
396000 lbf
Limiting speed
1.9 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
Price available upon request.
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QJ 1260 N2MA Bearing Product Overview & Core Advantages
The QJ 1260 N2MA is a four-point contact ball bearing designed for exceptional performance in demanding applications. This precision bearing is engineered to simultaneously handle combined loads, including radial loads and axial loads from both directions, within a compact, single-row design. Its high rigidity and superior load ratings make it an ideal solution for applications requiring high reliability and dimensional stability. Manufactured to a P6 (ABEC-3) tolerance class, it ensures consistent, high-precision operation.
QJ 1260 N2MA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning |
|---|---|
| N2 | Indicates the bearing has two machined grooves in the outer ring for lubrication. |
| MA | Specifies that the bearing is supplied with a brass cage. |
QJ 1260 N2MA Bearing Structural Features & Performance Benefits
- Four-Point Contact Design: The unique raceway geometry allows the bearing to support significant combined radial and axial loads from both directions with a single bearing row, offering a compact and space-saving solution.
- High Load Capacity: With a dynamic load rating of 187,200 lbf and a static load rating of 396,000 lbf, this bearing is built for heavy-duty applications and long service life.
- Precision & Rigidity: The P6 tolerance class and robust construction with a brass cage contribute to high running accuracy, smooth operation, and enhanced system rigidity.
- Optimized for Performance: The open design facilitates efficient lubrication, while the specified shoulder diameters ensure proper mounting and load support.
QJ 1260 N2MA Bearing Typical Application Areas
This bearing is ideally suited for heavy machinery and precision equipment, including:
- Industrial Gearboxes
- Large Pumps and Compressors
- Construction and Mining Equipment
- Material Handling Systems
- Wind Turbine Pitch and Yaw Systems
