QJ 1072 N2MA
Four-Point Contact Bearings Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
QJ 1072 N2MA
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
70.5 kg
Tolerance class
P6 (ABEC-3)
Seal type
Open
For load direction
Four Point Contact
Main Dimensions
Bore diameter
360 mm
Bore diameter tolerance
-0.03mm to 0
Outside diameter
540 mm
Outside diameter tolerance
-0.038mm to 0
Width
82 mm
Width tolerance
-0.05mm to 0
Chamfer dimension
5 mm
Distance from side face to load point
315 mm
Inner Ring Dimensions
Inner ring large-side shoulder diameter
423 mm
Outer Ring Dimensions
Shoulder diameter outer ring
477 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
191700 lbf
Radial static load rating
434250 lbf
Limiting speed
1.7 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.
Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
REQUEST A QUOTE
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
QJ 1072 N2MA Bearing Product Overview & Core Advantages
The QJ 1072 N2MA is a Four Point Contact Ball Bearing designed for exceptional performance in demanding applications. This single row bearing features a unique raceway geometry that enables it to simultaneously support high radial loads and substantial axial loads from both directions. Manufactured to a P6 (ABEC-3) tolerance class, it delivers high precision and reliable operation. Its compact design, with a 360 mm bore and 540 mm outside diameter, provides a robust solution for applications requiring high load capacity and rigidity within a constrained space.
QJ 1072 N2MA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning |
|---|---|
| N2 | Indicates the bearing has two lubrication grooves and holes in the outer ring. |
| MA | Specifies that the bearing is supplied with a specific lubricant suitable for its operating temperature range. |
QJ 1072 N2MA Bearing Structural Features & Performance Benefits
- High Load Capacity: The four point contact design is the core feature, allowing the bearing to handle combined radial and axial loads efficiently. This eliminates the need for complex bearing arrangements, simplifying design and assembly.
- High Rigidity: The optimized raceway and brass cage construction provide excellent structural integrity and high rigidity, minimizing deflection under heavy loads for precise positioning.
- Precision Performance: Built to P6 tolerance class, this bearing ensures high running accuracy and smooth operation, which is critical for precision machinery.
- Effective Lubrication: The N2 suffix indicates integrated lubrication grooves and holes, facilitating efficient grease distribution to extend service life and maintain performance.
- Durable Construction: Components made from chrome steel for the rings and balls, combined with a brass cage, offer high durability and reliable operation within a temperature range of -30° to 110 °C.
QJ 1072 N2MA Bearing Typical Application Areas
- Industrial Gearboxes
- Large Pumps and Compressors
- Material Handling Equipment (e.g., crane slewing rings)
- Wind Turbine Main Shafts
- Heavy-Duty Construction Machinery
- Indexing Tables and Precision Turntables
