71915 ACDGA/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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71915 ACDGA/P4A Bearing Product Overview & Core Advantages
The 71915 ACDGA/P4A is a single-row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and rigidity. Manufactured to P4A tolerance class, this bearing delivers superior running accuracy for demanding machinery. Its key advantage lies in its ability to accommodate combined loads (radial and axial loads in one direction) efficiently, making it ideal for high-speed spindles and precision equipment. The extra light preload (Class A) ensures minimal deflection under operational forces, contributing to outstanding system stability and longevity.
71915 ACDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71915 | Basic bearing series, indicating a high-precision angular contact design with a 75mm bore. |
| AC | Angular Contact design with a 25° contact angle. |
| DGA | Designates a Universal Matchable (SU) bearing, allowing for precise axial preload adjustment when mounted in pairs (back-to-back or face-to-face). |
| P4A | Indicates a super-precision tolerance class, exceeding ABEC 7 standards, for applications requiring extreme running accuracy. |
71915 ACDGA/P4A Bearing Structural Features & Performance Benefits
High Rigidity & Precision: The single-row design, combined with the 25° contact angle and extra light preload, provides high axial and radial rigidity, minimizing deflection under load and ensuring precise shaft positioning.
Superior Load Capacity: Engineered to handle significant combined loads, with a dynamic load rating of 7605 lbf and a static load rating of 7988 lbf.
High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, enabling a high limiting speed of 22,000 rpm. The open design facilitates efficient lubrication management for optimal thermal performance.
Precision Materials: Constructed from high-grade chrome steel for rings and balls, ensuring durability and consistent performance within a wide temperature range (-30°C to 110°C).
71915 ACDGA/P4A Bearing Typical Application Areas
The 71915 ACDGA/P4A is ideally suited for high-performance applications where precision and speed are critical, including:
- Machine Tool Spindles (High-speed milling, grinding)
- Precision Robotics and Automation Systems
- High-Frequency Motor Spindles
- Medical Equipment (e.g., Dental handpieces, Centrifuges)
- Aerospace Actuation Systems
