QJ 322 N2MA
Four-Point Contact Bearings Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
QJ 322 N2MA
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
12.5 kg
Tolerance class
P6 (ABEC-3)
Seal type
Open
For load direction
Four Point Contact
Main Dimensions
Bore diameter
110 mm
Bore diameter tolerance
-0.015mm to 0
Outside diameter
240 mm
Outside diameter tolerance
-0.02mm to 0
Width
50 mm
Width tolerance
-0.05mm to 0
Chamfer dimension
3 mm
Distance from side face to load point
123 mm
Inner Ring Dimensions
Inner ring large-side shoulder diameter
154 mm
Outer Ring Dimensions
Shoulder diameter outer ring
196 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
87750 lbf
Radial static load rating
108000 lbf
Limiting speed
4.8 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.
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 322 N2MA Bearing Product Overview & Core Advantages
The QJ 322 N2MA is a four-point contact ball bearing designed for exceptional performance in demanding applications. This metric single-row bearing excels at simultaneously handling combined radial loads and substantial axial loads from both directions. Its compact design, featuring a contact angle optimized for axial load capacity, makes it an ideal choice for high-rigidity and high-precision arrangements. Manufactured to a P6 (ABEC-3) tolerance class, it ensures reliable operation and dimensional consistency.
QJ 322 N2MA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| QJ 322 | Standard designation for a four-point contact ball bearing with a 110 mm bore and 240 mm outside diameter. |
| N2 | Indicates the bearing has two machined grooves in the outer ring for securing snap rings. |
| MA | Signifies that the bearing is pre-lubricated with a specific high-performance grease. |
QJ 322 N2MA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The four-point contact design and robust single-row construction provide high rigidity, enabling the bearing to support significant combined radial and axial loads in a compact envelope.
- Precision Performance: Built to a P6 tolerance class with a brass cage, this bearing ensures smooth operation, precise running accuracy, and stable performance under high speeds.
- Simplified Assembly: The N2 designation for snap ring grooves facilitates easy axial positioning and secure mounting within the housing, reducing assembly complexity.
- Ready-to-Use & Long-Lasting: The bearing arrives pre-lubricated (MA), ensuring immediate operation and reducing maintenance requirements from the outset.
QJ 322 N2MA Bearing Typical Application Areas
This bearing is engineered for applications requiring high axial stiffness and compact design. Key industries and machinery include:
- Industrial Gearboxes
- Machine Tool Spindles and indexing tables
- Construction Equipment swing rings
- Material Handling Systems
- Wind Turbine Yaw and Pitch Drives
