71907 CDGC/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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71907 CDGC/P4A Bearing Product Overview & Core Advantages
The 71907 CDGC/P4A is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Operating under the P4A tolerance class, it guarantees minimal dimensional runout and smooth operation. This bearing is universally matchable (SU), allowing for precise preload configuration when mounted in pairs or sets. Its optimized design is ideal for handling combined loads and is engineered for high-speed performance, making it a superior choice for high-reliability machinery.
71907 CDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71907 | Bearing series and size designation (35mm bore, 55mm OD, 10mm width). |
| CD | 15° contact angle, optimized for high rigidity and axial load capacity. |
| GC | Indicates a Moderate preload (Class C) for enhanced stiffness in the mounted arrangement. |
| P4A | The highest precision tolerance class, ensuring ultra-precise running accuracy. |
71907 CDGC/P4A Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The angular contact design with a 15° contact angle provides excellent resistance to combined radial and axial loads. The Moderate preload (GC) eliminates internal clearance, resulting in superior system stiffness and precise shaft positioning.
High-Speed Capability: The lightweight phenolic cage minimizes centrifugal forces, while the optimized internal geometry contributes to a high limiting speed of 56,000 rpm, making it an ideal high-speed bearing.
Precision Engineering: Manufactured to P4A tolerance standards with tight bore, outside diameter, and width tolerances, this bearing ensures minimal vibration and exceptional running accuracy for demanding applications.
Universal Matching: As a Universal Matchable (SU) bearing, it can be paired in any combination to create precisely preloaded sets (back-to-back, face-to-face, or tandem), offering flexibility in machine design.
71907 CDGC/P4A Bearing Typical Application Areas
The 71907 CDGC/P4A is specified for high-performance applications where precision and speed are critical. Key industries and equipment include:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- Precision Robotics: In robotic arm joints and high-accuracy positioning systems.
- High-Frequency Spindles: Used in PCB drilling and dental machining equipment.
- Aerospace Actuators: In control surface mechanisms requiring high reliability.
