71919 ACDGA/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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71919 ACDGA/P4A Bearing Product Overview & Core Advantages
The 71919 ACDGA/P4A is a single-row angular contact ball bearing designed for exceptional precision and performance in demanding applications. Manufactured to P4A tolerance class, it delivers ultra-high running accuracy. Its key advantage lies in its ability to support high combined loads, particularly substantial axial loads in one direction, thanks to its 25° contact angle. The phenolic cage and premium chrome steel construction contribute to its suitability for high-speed operation up to 16,000 rpm, making it an ideal choice for machine tool spindles and other high-precision machinery where rigidity and accuracy are paramount.
71919 ACDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71919 | Basic bearing series and size designation (95mm bore, 130mm OD, 18mm width). |
| AC | Angular Contact design with a 25° contact angle. |
| DGA | Designates a Universal Matchable (SU) bearing, supplied in a set of 3 for preloaded duplex arrangements (e.g., DB, DF, DT). |
| P4A | Indicates an ultra-precision tolerance class with enhanced dimensional and running accuracy. |
71919 ACDGA/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The single-row design with a 25° contact angle is optimized to handle significant combined radial and axial loads, providing stable and rigid support for rotating components.
- Superior High-Speed Performance: The lightweight phenolic resin cage minimizes centrifugal forces, reduces friction, and enables reliable operation at the high limiting speed of 16,000 rpm.
- Precision Engineering: Manufactured to P4A tolerance standards, this bearing ensures minimal runout and vibration, which is critical for applications requiring extreme positional accuracy.
- Universal Matching Capability (SU): Supplied as a matched set, these bearings can be mounted in various preloaded configurations (back-to-back, face-to-face, or tandem) to achieve the desired stiffness and operational performance.
71919 ACDGA/P4A Bearing Typical Application Areas
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Equipment
- Robotic Drives and Actuators
- Medical and Dental Equipment Spindles
