QJ 216 N2MA
Four-Point Contact Bearings Ball Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Outer Ring Dimensions
Performance
Materials
Environment & Compliance
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QJ 216 N2MA Bearing Product Overview & Core Advantages
The QJ 216 N2MA is a Four-Point Contact Ball Bearing designed for applications requiring exceptional precision and load handling capabilities. This single-row bearing excels at simultaneously supporting combined radial and axial loads from both directions, making it an ideal solution for compact, high-rigidity assemblies. Manufactured to P6 (ABEC-3) tolerance class, it delivers reliable performance in demanding operational environments.
QJ 216 N2MA Bearing Model Code Explained, Specifications & Naming Convention
- QJ: Four-Point Contact Ball Bearing series
- 216: Standard size designation (80mm bore, 140mm OD)
- N2: Machined brass cage with pin-type construction
- MA: Pre-lubricated with high-temperature grease
QJ 216 N2MA Bearing Structural Features & Performance Benefits
Four-Point Contact Design: The optimized raceway geometry enables the bearing to handle combined loads efficiently while maintaining minimal cross-sectional height, perfect for space-constrained applications.
High Precision Construction: Manufactured to P6 tolerance class with precisely controlled bearing dimensions (80mm bore, 140mm OD, 26mm width) ensures consistent performance and easy installation.
Superior Load Capacity: With radial dynamic load rating of 32,850 lbf and radial static load rating of 35,100 lbf, this bearing delivers exceptional durability under heavy operating conditions.
Optimized Cage Design: The machined brass cage (N2) provides excellent guidance and stability at limiting speeds up to 8,000 rpm, while the pre-lubrication ensures consistent performance across the operating temperature range of -30° to 110°C.
QJ 216 N2MA Bearing Typical Application Areas
The QJ 216 N2MA finds extensive use in precision applications requiring high load capacity and compact design:
- Machine tool spindles and rotary tables
- Industrial robots and automation equipment
- Precision gearboxes and transmission systems
- Aerospace components and actuation systems
- Medical equipment and imaging devices
