QJ 1084 N2MA
Four-Point Contact Bearings Ball Bearings
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Part No.
Part No.
QJ 1084 N2MA
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
99.5 kg
Tolerance class
P6 (ABEC-3)
Seal type
Open
For load direction
Four Point Contact
Main Dimensions
Bore diameter
420 mm
Bore diameter tolerance
-0.035mm to 0
Outside diameter
620 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
364 mm
Inner Ring Dimensions
Inner ring large-side shoulder diameter
490 mm
Outer Ring Dimensions
Shoulder diameter outer ring
550 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
207675 lbf
Radial static load rating
513000 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
No drawings available at the moment, will be launched soon
In Stock
Price available upon request.
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QJ 1084 N2MA Bearing Product Overview & Core Advantages
The QJ 1084 N2MA is a four-point contact ball bearing designed for exceptional performance in demanding applications. This single-row precision bearing is engineered to simultaneously handle combined loads, including radial loads and axial loads from both directions. Its compact design and P6 (ABEC-3) tolerance class ensure high running accuracy and reliability. The bearing comes pre-lubricated for immediate operation and features a robust brass cage for stable performance at the specified limiting speed.
QJ 1084 N2MA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| N2 | Indicates the bearing has two circlip grooves on the outer ring for secure axial location. |
| MA | Signifies that the bearing is filled with a specific high-performance lubricant suitable for the operating temperature range. |
QJ 1084 N2MA Bearing Structural Features & Performance Benefits
- Four-Point Contact Design: The raceway geometry allows the bearing to accommodate combined radial and axial loads from any direction with a single bearing row, offering a compact and efficient solution.
- High Load Capacity: With a radial dynamic load rating of 207,675 lbf and a radial static load rating of 513,000 lbf, it is built for heavy-duty applications requiring high rigidity.
- Precision & Stability: Manufactured to P6 tolerance class and equipped with a brass cage, it ensures smooth operation, reduced vibration, and reliable performance at the specified limiting speed of 1,500 rpm.
- Ready-to-Use: The bearing is pre-lubricated, facilitating easy installation and immediate operation without initial maintenance.
QJ 1084 N2MA Bearing Typical Application Areas
This bearing is ideally suited for applications requiring high precision and the ability to handle complex load scenarios. Common uses include:
- Industrial Gearboxes
- Large-Diameter Slewing Rings (e.g., in construction equipment)
- Precision Turntables
- Heavy-Duty Machinery Spindles
- Wind Turbine Yaw and Pitch Systems
