71902 CE/P4ADGA
71900 Series Super Precision Angular Contact Ball Bearings
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71902 CE/P4ADGA Bearing Product Overview & Core Advantages
The 71902 CE/P4ADGA is a super-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. As a universal matchable bearing supplied in a set of two, it enables simplified mounting in preloaded arrangements to achieve optimal system rigidity and minimal runout. Its P4A tolerance class and extra light preload (Class A) make it ideal for high-precision spindles and other critical machinery components where low vibration and high reliability are paramount.
71902 CE/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71902 | Basic bearing series, indicating a 15mm bore, 28mm OD, and 14mm width super-precision angular contact design. |
| CE | Contact angle of 15°, optimized for high-speed operation and combined load capacity. |
| P4A | Super-precision tolerance class exceeding ABEC 7, with enhanced running accuracy and dimensional stability. |
| DGA | Universal Matchable (SU) designation. Two bearings are supplied as a matched set for simplified preload adjustment. |
71902 CE/P4ADGA Bearing Structural Features & Performance Benefits
High-Speed Capability: The phenolic resin cage and optimized internal geometry, including the 15° contact angle, contribute to a high limiting speed of 140,000 rpm, making it suitable for demanding high-speed spindle applications.
Superior Rigidity and Accuracy: Manufactured to P4A tolerance standards with an extra light preload, this bearing provides exceptional running accuracy and system stiffness, minimizing deflection under load.
Combined Load Capacity: The angular contact design efficiently supports combined radial and axial loads simultaneously, a critical requirement for precision machining and tooling applications.
Pre-Lubricated for Immediate Use: The bearing comes pre-lubricated, ensuring immediate operation and protection during the initial run-in period within its specified temperature range of -30°C to 110°C.
71902 CE/P4ADGA Bearing Typical Application Areas
- High-Frequency CNC Spindles for milling, grinding, and drilling
- Precision Machine Tool Axles and rotary tables
- High-Speed Motors and encoder systems
- Medical and Dental Handpiece Drives
- Aerospace Instrumentation and gyroscopes
