71822 CD/P4DGC
71800 Series Super Precision Angular Contact Ball Bearings
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71822 CD/P4DGC Bearing Product Overview & Core Advantages
The 71822 CD/P4DGC is a precision angular contact ball bearing designed for applications demanding high rotational accuracy and rigidity. As a universally matchable (SU) bearing supplied in a pre-set pair, it is engineered to accommodate combined loads (radial and axial) simultaneously. Its P4 tolerance class ensures exceptional dimensional and running accuracy, making it ideal for high-speed spindles and other high-precision machinery. The moderate preload (Class C) enhances system stiffness and reduces vibration, contributing to superior performance in demanding operational conditions.
71822 CD/P4DGC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71822 | Basic bearing designation, indicating a metric, angular contact bearing with a 110mm bore, 140mm OD, and 32mm width. |
| C | Specifies a 15° contact angle, optimized for high-speed applications and moderate axial load capacity. |
| D | Indicates the bearing is part of a universally matchable (SU) pair. Two such bearings can be mounted together in any combination to achieve the desired preload or rigidity. |
| P4 | Denotes a high-precision tolerance class, with extremely tight limits on bore, outside diameter, and width tolerances for superior running accuracy. |
| DG | Signifies a moderate preload (Class C). This pre-determined axial internal load increases bearing stiffness and improves rotational accuracy. |
| C | Confirms the 15° contact angle is consistent across the matched pair. |
71822 CD/P4DGC Bearing Structural Features & Performance Benefits
High Rigidity and Precision: The combination of a 15° contact angle and moderate preload provides high system stiffness, minimizing deflection under load and ensuring precise shaft positioning. The P4 tolerance class guarantees minimal runout and vibration.
Superior Load Capacity: Designed as an angular contact bearing, the 71822 CD/P4DGC efficiently handles combined radial and axial loads. The universal match (SU) design allows for flexible arrangement of two bearings to create a system with optimized load-sharing capabilities.
Optimized High-Speed Performance: The lightweight phenolic cage reduces centrifugal forces, while the 15° contact angle and precision manufacturing contribute to a high limiting speed of 16,000 rpm, making it an excellent high-speed bearing.
Material Integrity: Manufactured from chrome steel for both rings and balls, this bearing offers high hardness, wear resistance, and a long operational life under demanding conditions.
71822 CD/P4DGC Bearing Typical Application Areas
The 71822 CD/P4DGC is ideally suited for high-precision, high-speed applications where rigidity and accuracy are paramount. Key industries and equipment include:
- Machine Tool Spindles: For CNC machining centers, grinding spindles, and milling heads.
- Precision Grinding Spindles: Where minimal runout and high rotational accuracy are critical.
- High-Frequency Motors and Spindles: Applications requiring stable operation at very high speeds.
- Robotic Arms and Precision Gearboxes: For accurate motion control and positioning.
