QJ 1038 N2MA
Four-Point Contact Bearings Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
QJ 1038 N2MA
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
11.5 kg
Tolerance class
P6 (ABEC-3)
Seal type
Open
For load direction
Four Point Contact
Main Dimensions
Bore diameter
190 mm
Bore diameter tolerance
-0.022mm to 0
Outside diameter
290 mm
Outside diameter tolerance
-0.025mm to 0
Width
46 mm
Width tolerance
-0.05mm to 0
Chamfer dimension
2.1 mm
Distance from side face to load point
168 mm
Inner Ring Dimensions
Inner ring large-side shoulder diameter
224 mm
Outer Ring Dimensions
Shoulder diameter outer ring
256 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
81900 lbf
Radial static load rating
126000 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 1038 N2MA Bearing Product Overview & Core Advantages
The QJ 1038 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 and axial loads from both directions with high precision. Its compact design and P6 (ABEC-3) tolerance class ensure superior running accuracy, making it ideal for high-reliability machinery requiring high rigidity and precise rotational motion.
QJ 1038 N2MA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| QJ 1038 | Standard designation for a four-point contact ball bearing with a 190mm bore. |
| N2 | Indicates two integral snap rings (one on either side) on the outer ring for simplified axial location in the housing. |
| MA | Signifies that the bearing is pre-lubricated with a specific high-performance grease suitable for the specified temperature range. |
QJ 1038 N2MA Bearing Structural Features & Performance Benefits
- Four-Point Contact Design: The optimized raceway geometry allows a single bearing to accommodate significant combined radial and bidirectional axial loads, simplifying assembly and saving space compared to traditional bearing arrangements.
- High Rigidity & Load Capacity: Engineered with a brass cage and manufactured from high-grade chrome steel, this bearing offers high rigidity and excellent dynamic and static load ratings (81,900 lbf dynamic, 126,000 lbf static).
- Precision & Speed: The P6 tolerance class ensures precise operation, while the robust construction supports a limiting speed of 3,400 rpm.
- Simplified Installation: The inclusion of snap rings (N2) on the outer ring facilitates secure and straightforward mounting within a housing, reducing the need for complex machining.
- Ready-to-Use & Long-Lasting: Being factory pre-lubricated (MA), the bearing is ready for immediate installation, reducing maintenance requirements and ensuring consistent performance from startup.
QJ 1038 N2MA Bearing Typical Application Areas
This bearing is ideally suited for applications requiring robust performance under complex loading conditions. Key industries and equipment include:
- Industrial Robots (e.g., robotic arms and rotary joints)
- Machine Tools (e.g., rotary tables, indexing heads)
- Material Handling Equipment (e.g., slewing rings for cranes and excavators)
- Aerospace Actuation Systems
- Precision Turntables and Positioning Systems
