71830 CD/P4DGA
71800 Series Super Precision Angular Contact Ball Bearings
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71830 CD/P4DGA Bearing Product Overview & Core Advantages
The 71830 CD/P4DGA is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. Manufactured to P4 tolerance class, this bearing is characterized by its ability to accommodate combined loads, offering high rigidity and reliable operation. Its universal matchable (SU) design allows for flexible mounting arrangements in pairs, making it ideal for high-precision spindles and other critical machinery where superior running accuracy is paramount.
71830 CD/P4DGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71830 | Basic bearing designation indicating size series and bore diameter (150 mm) |
| C | 15° contact angle, optimized for high-speed applications |
| D | Universal Matchable (SU) design for paired mounting |
| P4 | High precision tolerance class for superior running accuracy |
| DGA | Extra light preload (Class A) for minimal friction and optimal high-speed performance |
71830 CD/P4DGA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The angular contact design with a 15° contact angle enables the bearing to effectively handle combined radial and axial loads. The universal matchable arrangement allows two bearings to be mounted in tandem, back-to-back, or face-to-face configurations, significantly increasing system rigidity and moment load capacity.
High-Speed Performance: Featuring a lightweight phenolic cage and an extra light preload (DGA), this bearing achieves a high limiting speed of 11,000 rpm. The optimized internal geometry and precision manufacturing minimize friction and heat generation.
Precision & Reliability: Manufactured to P4 tolerance class with tight dimensional control on bore, outside diameter, and width, this bearing ensures consistent, high-precision performance. The use of high-quality chrome steel for rings and balls provides excellent durability and fatigue resistance.
71830 CD/P4DGA Bearing Typical Application Areas
The 71830 CD/P4DGA is specifically engineered for high-performance applications including:
- Machine Tool Spindles - High-speed milling, grinding, and turning centers
- Precision Robotics - High-accuracy robotic arms and joints
- High-Frequency Motors - Spindle motors and high-speed drives
- Medical Equipment - Dental handpieces and surgical tools
- Aerospace Systems - Guidance systems and auxiliary power units
