71900 ACE/P4ADGB
71900 Series Super Precision Angular Contact Ball Bearings
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71900 ACE/P4ADGB Bearing Product Overview & Core Advantages
The 71900 ACE/P4ADGB is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. This universal matchable (SU) bearing features a light preload (Class B) and is manufactured to P4A tolerance class, ensuring superior running accuracy. Its compact design, with a 10 mm bore and 12 mm width, provides a high load capacity in a minimal space. The bearing is capable of supporting combined loads (radial and axial) simultaneously, making it an ideal solution for high-speed spindles and precision machinery where high rigidity and rotational precision are paramount.
71900 ACE/P4ADGB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71900 | Basic bearing series and size designation. |
| ACE | Specific internal design and contact angle (25°). |
| P4A | High precision tolerance class, exceeding ABEC 7 standards. |
| DGB | Universal Matchable (SU) arrangement. Two bearings are supplied as a matched set for optimal performance. |
71900 ACE/P4ADGB Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4A tolerance class with a 25° contact angle, this bearing provides exceptional running accuracy and system stiffness, crucial for minimizing deflection under load.
- Optimized Load Capacity: The angular contact design efficiently handles combined radial and axial loads. The phenolic cage and optimized internal geometry contribute to a high dynamic load rating of 702 lbf.
- Superior High-Speed Performance: The lightweight phenolic resin cage ensures low friction and excellent acceleration characteristics, supporting a limiting speed of 165,000 rpm. The open design facilitates efficient lubrication management for high-speed operation.
- Universal Matchability (SU): Supplied as a pre-matched pair (DGB suffix), these bearings can be mounted in various configurations (back-to-back, face-to-face, or tandem) to precisely adjust the preload and stiffness of the application.
71900 ACE/P4ADGB Bearing Typical Application Areas
- Machine Tool Spindles
- High-Frequency Machining Centers
- Precision Grinding Spindles
- High-Speed Robotics and Automation
- Medical and Dental Handpiece Drives
- Aerospace Instrumentation
