71914 ACD/P4AQBCC
71900 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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71914 ACD/P4AQBCC Bearing Product Overview & Core Advantages
The 71914 ACD/P4AQBCC is a precision angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This P4A tolerance class bearing features a matched quadruplex back-to-back (QBC) arrangement, enabling it to handle significant combined radial and axial loads from multiple directions simultaneously. Its moderate preload (Class C) ensures high system stiffness and precise rotational accuracy, making it ideal for high-precision machinery where minimal deflection is critical. The phenolic cage and optimized 25° contact angle contribute to its excellent high-speed capabilities.
71914 ACD/P4AQBCC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Performance Benefit |
|---|---|---|
| 71914 | Basic bearing designation | 70mm bore, 100mm OD, 64mm width |
| ACD | Angular Contact Design, 25° contact angle | Optimized for combined loading conditions |
| P4A | High precision tolerance class | Superior running accuracy and dimensional stability |
| QBCC | Quadruplex Back-to-Back arrangement, Class C preload | Maximum system rigidity and moment load capacity |
71914 ACD/P4AQBCC Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The quadruplex back-to-back configuration creates an extremely rigid bearing system capable of withstanding heavy combined loads and significant moment loads. With a radial dynamic load rating of 19,170 lbf and static load rating of 29,025 lbf, this bearing delivers exceptional load-carrying performance in compact dimensions.
Precision & Speed Performance: Manufactured to P4A tolerance standards with tight dimensional controls (bore/OD tolerance: -0.004mm to 0), this bearing ensures precise rotational characteristics. The phenolic cage and optimized internal geometry enable a limiting speed of 28,000 rpm, making it suitable for high-speed applications.
Material & Thermal Performance: Constructed from chrome steel for both rings and balls, the bearing offers excellent durability and wear resistance. The phenolic cage provides good dimensional stability across the operating temperature range of -30°C to 110°C, maintaining performance in varied environmental conditions.
71914 ACD/P4AQBCC Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers and grinding spindles requiring maximum rigidity
- High-Speed Spindles: CNC machining centers, PCB drilling machines, and precision grinding equipment
- Robotics & Automation: Precision robotic arms and automation equipment requiring accurate positioning
- Aerospace Systems: Flight control systems and aircraft instrumentation requiring high reliability
- Medical Equipment: High-speed dental handpieces and medical imaging devices
- Test & Measurement: Precision rotary tables and coordinate measuring machines
