71822 ACDGA/P4
71800 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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Product Overview and Core Advantages
The 71822 ACDGA/P4 is a single-row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and rigidity. Manufactured to P4 tolerance class, this bearing delivers superior dimensional stability and running accuracy. Its 25° contact angle is optimized to handle significant combined loads (radial and axial) in one direction efficiently. The phenolic resin cage and universal matching design (SU) enable high-speed operation and simplified mounting in duplex arrangements, making it ideal for machine tool spindles and other precision machinery where high rigidity and minimal runout are critical.
71822 ACDGA/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71822 | Basic bearing designation (110mm bore, 140mm OD, 16mm width) |
| AC | Angular Contact design with 25° contact angle |
| D | High-precision phenolic resin cage |
| GA | Light preload (Class A) for reduced deflection |
| P4 | Super precision tolerance class (ISO P4) |
Structural Features and Performance Benefits
Precision Ground Components: The bearing features tight dimensional tolerances (bore/OD: -0.004mm to 0) and P4 precision grade for exceptional running accuracy and minimal vibration.
High-Speed Capability: The lightweight phenolic resin cage reduces centrifugal forces, enabling operation at high rotational speeds up to 16,000 rpm while maintaining stability.
Superior Load Capacity: With a 25° contact angle and optimized internal geometry, this bearing delivers excellent combined load capacity (Radial dynamic: 6795 lbf, Static: 8550 lbf) while maintaining high rigidity.
Universal Matching Design: As a Universal Matchable (SU) bearing, it can be paired with another identical bearing in various preload configurations (back-to-back, face-to-face, or tandem) to meet specific application requirements.
Optimized Material Selection: Manufactured from chrome steel for both rings and balls, ensuring high durability and consistent performance across the operating temperature range (-30°C to 110°C).
71822 ACDGA/P4 Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers, grinding spindles, and milling heads
- Precision Instrumentation: Measuring equipment, optical instruments, and laboratory apparatus
- High-Speed Motors: Electric spindle motors and high-frequency motor applications
- Robotics and Automation: Industrial robot joints, precision positioning systems
- Aerospace Components: Guidance systems, avionics, and precision actuators
