71913 CDGC/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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71913 CDGC/P4A Bearing Product Overview & Core Advantages
The 71913 CDGC/P4A is a single row angular contact ball bearing engineered for applications demanding high precision and exceptional running accuracy. Positioned in the P4A super-precision tolerance class, it is designed to handle combined loads, primarily thrust loads, with high rigidity. Its moderate preload (Class C) ensures optimal stiffness and minimizes axial and radial runout, making it ideal for high-speed spindles and other precision machinery where operational reliability is critical. The bearing is universally matchable (SU), allowing for flexible mounting arrangements in sets to accommodate complex load requirements.
71913 CDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71913 | Basic bearing series and size designation (65mm bore, 90mm OD, 13mm width). |
| CD | Contact angle of 15°, optimized for handling significant thrust loads. |
| GC | Indicates a specific internal clearance and preload group for moderate preload (Class C). |
| P4A | Denotes a super-precision tolerance class, with extremely tight dimensional and running accuracy tolerances. |
71913 CDGC/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The single row angular contact design, combined with P4A tolerances and moderate preload, provides superior shaft positioning accuracy and system stiffness, effectively resisting operational deflection.
- Optimized Load Capacity: With a 15° contact angle, this bearing is engineered to support high combined loads, offering excellent performance under predominant thrust loads.
- High-Speed Capability: The lightweight phenolic cage ensures stability and reduced centrifugal forces, contributing to a high limiting speed of 31,000 rpm. This makes it suitable for high-speed applications.
- Universal Matching (SU): This feature allows multiple bearings to be mounted in a matched set (typically 3 bearings) to share loads effectively, providing design flexibility for complex arrangements.
- Durable Construction: Manufactured from chrome steel for both rings and balls, the bearing ensures high durability and long service life under demanding conditions.
71913 CDGC/P4A Bearing Typical Application Areas
The 71913 CDGC/P4A is ideally suited for high-performance machinery where precision and speed are paramount. Key application areas include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: Used in PCB drilling, engraving, and other high-accuracy machining operations.
- High-Frequency Motors: Spindles for electric motors requiring minimal runout and high rotational accuracy.
- Robotics: Critical joints and arm assemblies demanding high rigidity and precise movement.
