The 71984 angular contact ball bearing is part of the 719 series, engineered for ultra-precision performance in applications demanding high speed, minimal friction, and superior rigidity. Manufactured to P5 precision class or higher, this bearing is ideal for industries requiring strict tolerances, such as aerospace, precision machine tools, robotics, and high-speed spindle systems.
Product Model: 71984
Bearing Type: Angular Contact Ball Bearing
Precision Grade: P5 or Higher (P4, P2 available upon request)
Inner Diameter (ID): 420 mm
Outer Diameter (OD): 560 mm
Width (B): 65 mm
Contact Angle: 15° (customizable 25°, 30° upon request)
Cage Material: Brass, Phenolic Resin, or Polyamide (based on application needs)
Seal Type: Open
Lubrication: Oil or grease-lubricated, depending on application
Dynamic Load Rating (Cr): Available upon request
Static Load Rating (Cor): Available upon request
Limiting Speed: High-speed capability (consult factory for application-specific speed)
719 Series Compared with Other series Angular Contact Ball Bearings
The 719 series is designed for high-speed and high-precision applications. Compared to other angular contact ball bearing series (e.g., 70 series, 72 series), the 719 series offers:
| Feature | 719 Series | 70 Series | 72 Series |
|---|---|---|---|
| Cross-section | Ultra-thin | Thin | Medium |
| Speed capability | Highest | High | Moderate |
| Rigidity | Moderate | High | Higher |
| Load capacity | Lower | Moderate | Higher |
| Applications | High-speed spindles, precision tools | Machine centers, general spindles | Heavy-duty machining, pumps |
While the 70 and 72 series prioritize load-bearing capacity and rigidity, the 719 series is optimized for minimal mass and maximum rotational speed, making it the preferred choice in environments where precision and speed outweigh heavy load requirements.
Be used in a wide range of industries.
Robotics and Automation Systems
High-Speed CNC Spindles
Precision Grinding Machines
Aerospace Equipment
Medical Imaging Devices
Wind Turbine Gearboxes (High-Speed Shafts)
Why Choose Our 71984 Angular Contact Ball Bearing?
✅ Precision Manufacturing: Our bearings are manufactured to P5, P4, or even P2 tolerances, ensuring ultra-low runout and consistent performance.
✅ Large Size Expertise: We specialize in large-diameter angular contact ball bearings, offering both standard and custom configurations.
✅ Strict Quality Control: Each bearing undergoes rigorous inspection-including dynamic balance, noise, radial clearance, and raceway profiling.
✅ Material Excellence: High-purity bearing steel, optimized cage materials, and custom lubrication solutions.
✅ Fast Delivery & Technical Support: Full engineering support from design to post-sales service.
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