71819 CD/P4DGA
71800 Series Super Precision Angular Contact Ball Bearings
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71819 CD/P4DGA Bearing Product Overview & Core Advantages
The 71819 CD/P4DGA is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. As a universal matchable (SU) bearing supplied in a pre-lubricated set of two, it enables simplified installation and optimal performance in preloaded configurations. Its P4 tolerance class ensures ultra-precise running, making it ideal for high-speed spindles and other critical machinery where minimal runout and high reliability are paramount. The combination of a 15° contact angle and extra light preload (Class A) provides superior handling of combined radial and axial loads while maintaining high-speed capability.
71819 CD/P4DGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71819 CD | Basic bearing designation for a high-precision angular contact ball bearing series. |
| P4 | Indicates a very high tolerance class, signifying extremely tight dimensional and running accuracy. |
| DGA | Signifies a universal matchable (SU) bearing pair, supplied lubricated and ready for installation in a preloaded arrangement. |
71819 CD/P4DGA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design and universal matching allow two bearings to be mounted together to create a highly rigid system capable of supporting significant combined loads (radial and axial).
- Precision & High-Speed Performance: Manufactured to P4 tolerance standards with a phenolic cage, this bearing ensures smooth operation and low vibration at high rotational speeds, with a limiting speed of 15,000 rpm.
- Optimized for Preload: The extra light preload (Class A) minimizes starting and running torque while maximizing positional accuracy and system stiffness in the final application.
- Ready-to-Install Solution: Supplied as a lubricated and matched set of 2 bearings, it reduces assembly time and ensures consistent, pre-optimized performance directly from the box.
71819 CD/P4DGA Bearing Typical Application Areas
- Machine Tool Spindles
- High-Frequency Machining Centers
- Precision Grinding Spindles
- High-Speed Robotics
- Medical & Dental Equipment Spindles
