QJ 236 N2MA
Four-Point Contact Bearings Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
QJ 236 N2MA
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
20.5 kg
Tolerance class
P6 (ABEC-3)
Seal type
Open
For load direction
Four Point Contact
Main Dimensions
Bore diameter
180 mm
Bore diameter tolerance
-0.018mm to 0
Outside diameter
320 mm
Outside diameter tolerance
-0.028mm to 0
Width
52 mm
Width tolerance
-0.05mm to 0
Chamfer dimension
4 mm
Distance from side face to load point
175 mm
Inner Ring Dimensions
Inner ring large-side shoulder diameter
231 mm
Outer Ring Dimensions
Shoulder diameter outer ring
269 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
106875 lbf
Radial static load rating
172125 lbf
Limiting speed
3.4 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 236 N2MA Bearing Product Overview & Core Advantages
The QJ 236 N2MA is a Four-Point Contact Ball Bearing designed for applications requiring exceptional performance under complex loading conditions. This metric single row bearing is engineered to simultaneously support high radial loads and axial loads in both directions, making it an ideal solution for compact, high-precision assemblies. Manufactured to a P6 (ABEC-3) tolerance class, it ensures reliable operation and long service life in demanding environments. Its robust construction and optimized internal geometry contribute to its high rigidity and excellent load-carrying capacity.
QJ 236 N2MA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| QJ 236 | Standard designation for a four-point contact ball bearing with a 180mm bore. |
| N2 | Indicates the bearing has two machined grooves in the outer ring for sealing or retaining devices. |
| MA | Signifies that the bearing is pre-lubricated with a specific, high-performance grease. |
QJ 236 N2MA Bearing Structural Features & Performance Benefits
- Four-Point Contact Design: The unique raceway geometry allows the bearing to handle combined radial and axial loads from any direction with a single bearing, simplifying assembly and saving space.
- High Load Capacity: With a dynamic load rating of 106,875 lbf and a static load rating of 172,125 lbf, it is built for heavy-duty applications and offers a long operational lifespan.
- Precision & Rigidity: Manufactured to P6 tolerance and featuring a brass cage, the bearing ensures smooth operation, minimal vibration, and high rotational accuracy, contributing to overall system high rigidity.
- Optimized for Performance: The open seal type allows for high-speed operation, with a limiting speed of 3,400 rpm. The pre-applied lubricant ensures immediate readiness and reliable performance within a temperature range of -30°C to 110°C.
QJ 236 N2MA Bearing Typical Application Areas
This bearing is ideally suited for heavy machinery and precision equipment where robust performance is critical. Key applications include:
- Industrial Gearboxes and power transmission systems
- Large Pumps and Compressors
- Material Handling Equipment such as crane slewing rings
- Wind Turbine Pitch and Yaw Systems
- Construction and Mining Machinery
