71948 CD/P4ADGC
71900 Series Super Precision Angular Contact Ball Bearings
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71948 CD/P4ADGC Bearing Product Overview & Core Advantages
The 71948 CD/P4ADGC is a precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. Operating under P4A tolerance class, this bearing delivers superior running precision. Its universal matchable (SU) design allows for flexible mounting in various preload configurations, while the moderate preload (Class C) ensures optimal stiffness and minimal deflection under combined loads. Manufactured from high-grade chrome steel and featuring a phenolic cage, it is engineered for high reliability in high-speed and high-precision environments.
71948 CD/P4ADGC Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CD | Designates a universal matchable bearing with a 15° contact angle, allowing for duplex mounting in back-to-back (DB), face-to-face (DF), or tandem (DT) arrangements. |
| P4A | Indicates a high-precision tolerance class with enhanced dimensional and running accuracy, suitable for applications requiring minimal runout and vibration. |
| DGC | Specifies a moderate preload (Class C), providing a balance between operational stiffness and thermal management. |
71948 CD/P4ADGC Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design and 15° contact angle enable the bearing to efficiently support significant combined radial and axial loads in one direction. The moderate preload enhances system rigidity, reducing deflection under operational stresses.
- Precision & High-Speed Performance: Manufactured to P4A tolerance standards, this bearing ensures exceptional running accuracy. The lightweight phenolic cage and optimized internal geometry contribute to stable operation at high rotational speeds, with a limiting speed of 7,500 rpm.
- Universal Matching Capability (SU): As a universal matchable bearing, it can be paired with another identical bearing in various configurations (DB, DF, DT) without selective matching, simplifying inventory and assembly for complex spindle designs.
- Durable Construction: Components made from chrome steel offer high hardness and wear resistance. The open design allows for efficient lubrication management, supporting a wide temperature range from -30°C to 110°C.
71948 CD/P4ADGC Bearing Typical Application Areas
This high-precision bearing is ideally suited for applications where accuracy, speed, and rigidity are paramount. Key industries and machinery include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Gearboxes and Industrial Pumps.
- High-Frequency Motors and Compressors.
- Aerospace Positioning Systems and Medical Imaging Equipment.
