QJ 214 N2MA
Four-Point Contact Bearings Ball Bearings
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Part No.
Part No.
QJ 214 N2MA
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
1.3 kg
Tolerance class
P6 (ABEC-3)
Seal type
Open
For load direction
Four Point Contact
Main Dimensions
Bore diameter
70 mm
Bore diameter tolerance
-0.012mm to 0
Outside diameter
125 mm
Outside diameter tolerance
-0.015mm to 0
Width
24 mm
Width tolerance
-0.05mm to 0
Chamfer dimension
1.5 mm
Distance from side face to load point
68 mm
Inner Ring Dimensions
Inner ring large-side shoulder diameter
83.5 mm
Outer Ring Dimensions
Shoulder diameter outer ring
106 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
27000 lbf
Radial static load rating
27450 lbf
Limiting speed
9 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
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QJ 214 N2MA Bearing Product Overview & Core Advantages
The QJ 214 N2MA is a metric single row four-point contact ball bearing engineered for high-performance applications requiring exceptional precision and load capacity. This bearing is specifically designed to simultaneously handle combined radial and axial loads from both directions, making it an extremely compact and efficient solution. Manufactured to a P6 (ABEC-3) tolerance class, it delivers high running accuracy and reliability for demanding industrial environments. Its optimized internal geometry and robust construction provide superior operational stability.
QJ 214 N2MA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning | Significance |
|---|---|---|
| N2 | Snap ring groove on the outer ring | Facilitates secure axial location and simplifies bearing housing design, eliminating the need for complex housing shoulders. |
| MA | Brass cage, guided by the outer ring | The brass cage offers high strength and excellent wear resistance, contributing to smooth operation and high limiting speed. Outer ring guidance ensures optimal cage stability. |
QJ 214 N2MA Bearing Structural Features & Performance Benefits
- Four-Point Contact Design: The unique raceway geometry allows the bearing to support combined radial and axial loads in both directions with a single bearing row, offering a compact design that saves space and weight.
- High Load Capacity: With a radial dynamic load rating of 27,000 lbf and a radial static load rating of 27,450 lbf, this bearing is built for robust performance under significant stress.
- High Precision & Rigidity: Conforming to P6 tolerance class, it ensures minimal runout and high rotational accuracy. The solid construction provides high rigidity for precise shaft positioning.
- Optimized for High-Speed Operation: The combination of a lightweight brass cage and an open design allows for effective lubrication management, supporting a high limiting speed of 9,000 rpm.
- Versatile Lubrication & Temperature Range: The open seal type permits optimal lubrication flow. It operates reliably within a temperature range of -30°C to 110°C, suitable for various industrial climates.
QJ 214 N2MA Bearing Typical Application Areas
This bearing is ideal for applications requiring high precision and the ability to handle complex load scenarios. Key industries and equipment include:
- Robotics and Automation: Used in robot arm joints and rotary actuators.
- Machine Tools: Ideal for rotary tables, indexing heads, and spindle supports.
- Material Handling: Found in turntables, slewing rings for small cranes, and positioning systems.
- Aerospace & Defense: Applicable in radar platforms, antenna positioning systems, and flight control mechanisms.
