QJ 1064 N2MA
Four-Point Contact Bearings Ball Bearings
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Part No.
Part No.
QJ 1064 N2MA
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
50 kg
Tolerance class
P6 (ABEC-3)
Seal type
Open
For load direction
Four Point Contact
Main Dimensions
Bore diameter
320 mm
Bore diameter tolerance
-0.03mm to 0
Outside diameter
480 mm
Outside diameter tolerance
-0.033mm to 0
Width
74 mm
Width tolerance
-0.05mm to 0
Chamfer dimension
5 mm
Distance from side face to load point
280 mm
Inner Ring Dimensions
Inner ring large-side shoulder diameter
376 mm
Outer Ring Dimensions
Shoulder diameter outer ring
424 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
160875 lbf
Radial static load rating
344250 lbf
Limiting speed
2 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 1064 N2MA Bearing Product Overview & Core Advantages
The QJ 1064 N2MA is a four-point contact ball bearing designed for exceptional performance in demanding applications. This precision bearing is engineered to simultaneously withstand combined radial and axial loads from both directions, making it an ideal solution for compact, high-rigidity designs. Manufactured to a P6 (ABEC-3) tolerance class, it ensures high running accuracy and reliability. Its open design, pre-lubricated for immediate operation, is optimized for high-speed performance up to 2000 rpm, establishing it as a top-tier component for critical machinery.
QJ 1064 N2MA Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| QJ 1064 | Standard designation for a four-point contact ball bearing with a 320 mm bore diameter. |
| N2 | Indicates specific internal design and snap ring groove modifications for precise mounting. |
| MA | Signifies that the bearing is pre-lubricated with a high-performance grease suitable for the specified temperature range. |
QJ 1064 N2MA Bearing Structural Features & Performance Benefits
- Four-Point Contact Design: The optimized raceway geometry allows a single bearing row to handle axial loads in both directions and radial loads simultaneously, resulting in a compact bearing size and simplified assembly.
- High Load Capacity: With a radial dynamic load rating of 160,875 lbf and a radial static load rating of 344,250 lbf, this bearing is built for heavy-duty applications and long service life under significant combined loads.
- High-Speed Capability: The brass cage ensures stability and guides the balls effectively at high rotational speeds, supporting the limiting speed of 2000 rpm.
- Precision & Rigidity: Manufactured to P6 tolerance from chrome steel for both rings and balls, the bearing provides high dimensional accuracy, minimal runout, and superior rigidity for precise shaft positioning.
- Ready-to-Install: The bearing comes lubricated from the factory, facilitating quick installation and immediate operation within the specified temperature range of -30°C to 110°C.
QJ 1064 N2MA Bearing Typical Application Areas
This bearing is ideally suited for applications requiring high precision and the ability to support complex load combinations. Key industries and machinery include:
- Industrial Robots and robotic actuators (for precise joint movement)
- Wind Turbine pitch and yaw control systems
- Machine Tool rotary tables and indexing heads
- Medical Equipment such as CT scanner gantries
- Aerospace actuation systems and radar platforms
