71914 ACD/P4ATBTA
71900 Series Super Precision Angular Contact Ball Bearings
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71914 ACD/P4ATBTA Bearing Product Overview & Core Advantages
The 71914 ACD/P4ATBTA is a super-precision angular contact ball bearing designed for the most demanding applications. This metric system bearing is part of a matched triplex set in a back-to-back (TBT) arrangement, delivering exceptional system rigidity and rotational accuracy. Its P4A tolerance class and extra light preload (Class A) ensure smooth, high-speed operation with minimal vibration. Engineered to handle combined loads, it is the ideal solution for machine tool spindles and other high-performance machinery requiring ultimate precision and reliability.
71914 ACD/P4ATBTA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71914 | Basic bearing series and size designation |
| AC | Angular Contact design with a 25° contact angle |
| D | Signifies a duplex bearing (in this context, part of a matched set) |
| /P4A | Super-precision tolerance class, exceeding ABEC 7 standards |
| TB | Matched arrangement: Triplex Back-to-Back |
| T | Cage material: Phenolic (TF) for high-speed capability |
| A | Preload specification: Extra light (Class A) |
71914 ACD/P4ATBTA Bearing Structural Features & Performance Benefits
High Rigidity & System Stability: The triplex back-to-back (TBT) matched set configuration provides extremely high system rigidity, effectively resisting complex moment loads and ensuring stable rotational accuracy under demanding conditions.
Superior High-Speed Performance: The lightweight phenolic resin cage (TF) minimizes centrifugal forces, while the 25° contact angle and extra light preload are optimized for limiting speeds up to 28,000 rpm, making it a true high-speed bearing.
Exceptional Load Capacity: Manufactured from high-grade chrome steel for both rings and balls, this bearing offers a high dynamic load rating of 15,795 lbf and a static load rating of 21,712 lbf, ensuring long service life under significant combined radial and axial loads.
Precision & Accuracy: The P4A tolerance class guarantees extremely tight dimensional and running accuracy, which is critical for applications requiring minimal runout and vibration.
71914 ACD/P4ATBTA Bearing Typical Application Areas
The 71914 ACD/P4ATBTA is engineered for high-performance machinery where precision, speed, and rigidity are paramount. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, high-frequency motor spindles.
- Robotics: High-accuracy rotary joints and arm actuators.
- Aerospace & Defense: Gyroscopes, radar systems, and navigation equipment.
