71914 ACD/P4ATBTB
71900 Series Super Precision Angular Contact Ball Bearings
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71914 ACD/P4ATBTB Bearing Product Overview & Core Advantages
The 71914 ACD/P4ATBTB is a high-precision angular contact ball bearing designed for demanding applications. This triplex back-to-back (TBT) matched set delivers exceptional system rigidity and can accommodate combined radial and axial loads. Manufactured to a P4A tolerance class, it offers superior running accuracy, making it ideal for high-speed, high-reliability machinery where precise rotational performance is critical. The set is pre-lubricated and features a light preload (Class B) for immediate, optimized operation.
71914 ACD/P4ATBTB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71914 | Bearing series and size designation (70mm bore, 100mm OD). |
| ACD | Angular Contact Design with a 25° contact angle. |
| P4A | Indicates high precision tolerance class (superior to ABEC-7). |
| TBT | Specifies the Triplex Back-to-Back matched arrangement of three bearings. |
71914 ACD/P4ATBTB Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The triplex back-to-back configuration creates an extremely rigid bearing system, capable of handling significant combined loads and moment loads. The 25° contact angle is optimized for sustaining high axial loads in both directions.
High-Speed Performance: The phenolic resin cage is lightweight and robust, contributing to lower friction and stable operation at the high limiting speed of 28,000 rpm. The precision-ground chrome steel components ensure smooth, low-vibration rotation.
Precision & Reliability: Manufactured to P4A tolerance standards, this bearing set guarantees minimal runout and precise shaft positioning. The matched set is supplied with a light preload to eliminate internal clearance, ensuring immediate high performance and extended service life.
71914 ACD/P4ATBTB Bearing Typical Application Areas
This bearing is engineered for high-performance applications, including:
- Machine Tool Spindles (e.g., milling, grinding, and turning centers)
- High-Frequency Motors and Precision Gearboxes
- Industrial Pumps and Compressors
- Aerospace & Defense Actuation Systems
- Robotic Arm Joints and Rotary Tables
