71914 ACD/P4ADFC
71900 Series Super Precision Angular Contact Ball Bearings
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71914 ACD/P4ADFC Bearing Product Overview & Core Advantages
The 71914 ACD/P4ADFC is a precision angular contact ball bearing designed for demanding applications requiring high rigidity and accuracy. This duplex face-to-face (DF) matched set is preloaded to Moderate / Class C, providing exceptional system stability and runout control. Its primary advantage lies in its ability to handle combined loads (radial and axial) efficiently, making it ideal for high-precision spindles and machinery where high rigidity and precise rotational accuracy are paramount. The bearings are supplied lubricated and ready for installation, featuring a P4A tolerance class for superior dimensional and running accuracy.
71914 ACD/P4ADFC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71914 | Basic bearing series and size designation (70mm bore, 100mm OD). |
| AC | Angular Contact design with a 25° contact angle. |
| D | Indicates a Duplex (two-bearing) matched set. |
| P4A | Specifies the high-precision tolerance class, exceeding normal P4 standards for enhanced accuracy. |
| DF | Specifies the Face-to-Face mounting arrangement of the duplex pair. |
| C | Indicates the Moderate preload level applied to the matched set. |
71914 ACD/P4ADFC Bearing Structural Features & Performance Benefits
High Rigidity & System Stability: The duplex face-to-face (DF) arrangement and moderate preload (Class C) work in unison to create an exceptionally rigid bearing system. This configuration minimizes axial and radial deflection under load, ensuring precise shaft positioning and improved machining quality.
Superior Load Capacity: With a 25° contact angle, this bearing is optimized to support significant combined radial and axial loads simultaneously. The dynamic and static load ratings (11,858 lbf and 14,400 lbf respectively) ensure reliable performance under demanding operating conditions.
Precision & High-Speed Capability: Manufactured to P4A tolerance class, this bearing guarantees minimal running noise and vibration. The phenolic cage is lightweight and robust, contributing to smooth operation at high speeds, with a limiting speed of 28,000 rpm. The open design allows for efficient lubrication management in high-speed applications.
Material Quality: Constructed from chrome steel for both rings and balls, the bearing offers high hardness, wear resistance, and a long operational lifespan.
71914 ACD/P4ADFC Bearing Typical Application Areas
The 71914 ACD/P4ADFC is engineered for high-performance applications where precision and rigidity are non-negotiable. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Rotary Tables: Indexing and positioning systems.
- High-Frequency Motors and Spindles: Applications requiring minimal runout and high rotational accuracy.
- Medical and Dental Equipment: High-speed handpieces and scanners.
- Aerospace Test Rigs: Precision positioning and simulation equipment.
