71922 ACE/P4AQBCB
71900 Series Super Precision Angular Contact Ball Bearings
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71922 ACE/P4AQBCB Bearing Product Overview & Core Advantages
The 71922 ACE/P4AQBCB is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This quadruplex back-to-back (QBC) matched set delivers superior performance under combined loads, handling significant radial and axial forces simultaneously. Manufactured to P4A tolerance class with a light preload (Class B), it ensures precise shaft positioning, minimal runout, and optimal operational stability. The phenolic cage and chrome steel construction make it ideal for high-speed operation up to 10,000 rpm while maintaining dimensional stability across a wide temperature range (-30°C to 110°C).
71922 ACE/P4AQBCB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Performance Benefit |
|---|---|---|
| 71922 | Standard bearing series designation | Defines basic dimensions: 110mm bore × 150mm OD × 80mm width |
| ACE | 25° contact angle, enhanced internal design | Optimized for axial load capacity and stiffness |
| P4A | High precision tolerance class | Superior running accuracy and reduced vibration |
| QBC | Quadruplex Back-to-Back arrangement | Maximum moment stiffness and load distribution |
71922 ACE/P4AQBCB Bearing Structural Features & Performance Benefits
Enhanced Rigidity: The quadruplex back-to-back configuration creates an extremely rigid bearing system that effectively resists moment loads and shaft deflection, making it ideal for precision applications requiring minimal deformation under load.
Superior Load Capacity: With a 25° contact angle and optimized internal geometry, this bearing delivers exceptional combined load performance, handling both substantial radial loads (22,725 lbf dynamic) and bidirectional axial loads simultaneously.
High-Speed Capability: The phenolic resin cage provides excellent strength-to-weight ratio and smooth operation at limiting speeds of 10,000 rpm, while the precision-ground chrome steel components ensure balanced operation with minimal vibration.
Precision Engineering: Manufactured to P4A tolerance standards with bore and outside diameter tolerances of -0.004mm to 0, this bearing guarantees precise shaft positioning and consistent performance in the most demanding applications.
71922 ACE/P4AQBCB Bearing Typical Application Areas
- Machine Tool Spindles: High-precision milling, grinding, and turning centers requiring extreme rigidity and accuracy
- Precision Gearboxes: Industrial transmission systems demanding high-speed capability and load capacity
- Robotic Systems: Articulation joints and precision positioning mechanisms in industrial robotics
- Aerospace Components: Flight control systems and auxiliary power units requiring reliable performance
- Medical Equipment: High-speed dental handpieces and medical imaging devices
- Test & Measurement Equipment: Precision rotary tables and coordinate measuring machines
