QJ 219 N2MA
Four-Point Contact Bearings Ball Bearings
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Part No.
Part No.
QJ 219 N2MA
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
3.35 kg
Tolerance class
P6 (ABEC-3)
Seal type
Open
For load direction
Four Point Contact
Main Dimensions
Bore diameter
95 mm
Bore diameter tolerance
-0.015mm to 0
Outside diameter
170 mm
Outside diameter tolerance
-0.018mm to 0
Width
32 mm
Width tolerance
-0.05mm to 0
Chamfer dimension
2.1 mm
Distance from side face to load point
93 mm
Inner Ring Dimensions
Inner ring large-side shoulder diameter
120 mm
Outer Ring Dimensions
Shoulder diameter outer ring
145 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
47700 lbf
Radial static load rating
52200 lbf
Limiting speed
6.7 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 219 N2MA Bearing Product Overview & Core Advantages
The QJ 219 N2MA is a Four Point Contact Ball Bearing designed for exceptional performance in demanding applications. As a metric single row bearing with an open design, it excels at simultaneously handling combined radial and axial loads from both directions. Its P6 (ABEC-3) tolerance class ensures high running accuracy, making it a precision bearing ideal for applications requiring high reliability and rigidity. The compact cross-section and optimized internal geometry contribute to its robust performance.
QJ 219 N2MA Bearing Model Code Explained, Specifications & Naming Convention
The QJ 219 N2MA model designation provides key technical specifications:
- QJ 219: Denotes the bearing series and size (95mm bore, 170mm OD, 32mm width).
- 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 219 N2MA Bearing Structural Features & Performance Benefits
- Four Point Contact Design: The unique raceway geometry allows the bearing to support combined loads (radial and axial loads in both directions) with a single bearing row, offering a compact and efficient solution.
- High Rigidity and Load Capacity: The robust chrome steel construction and precise geometry result in high static and dynamic load ratings (52,200 lbf static, 47,700 lbf dynamic), ensuring stability under significant stress.
- Precision Performance: Manufactured to P6 tolerance class, this bearing provides high running accuracy and low noise, which is critical for precision machinery.
- Optimized for Secure Mounting: The N2 suffix indicates snap ring grooves, facilitating axial location and simplifying bearing arrangement design.
- Pre-Lubricated for Longevity: The MA lubrication ensures optimal performance from the start and is suitable for the specified temperature range of -30°C to 110°C.
QJ 219 N2MA Bearing Typical Application Areas
The QJ 219 N2MA is engineered for high-performance applications, including:
- Industrial Gearboxes
- Machine Tool Spindles
- Pumps and Compressors
- Material Handling Equipment
- Precision Rotary Actuators
