71814 CD/P4DGA
71800 Series Super Precision Angular Contact Ball Bearings
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71814 CD/P4DGA Bearing Product Overview & Core Advantages
The 71814 CD/P4DGA is a super-precision angular contact ball bearing designed for applications demanding the highest levels of rotational accuracy and rigidity. Manufactured to P4 tolerance class, this bearing excels in high-speed spindle systems. Its extra light preload (Class A) minimizes deflection under operational loads, ensuring exceptional running accuracy. The Universal Matchable (SU) design allows two bearings to be paired in a universal arrangement for optimal performance, enabling the bearing to handle combined radial and axial loads efficiently. Its compact cross-section and phenolic cage contribute to its high-speed capability and stability.
71814 CD/P4DGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 71814 | Bearing series and size designation | Indicates a 70mm bore, 90mm OD, 20mm width angular contact bearing. |
| CD | Contact angle of 15° | Optimized for handling combined loads, providing a balance between radial and axial load capacity. |
| P4 | Tolerance class | Denotes high-precision manufacturing standards for superior running accuracy and minimal vibration. |
| DGA | Universal Matchable (SU) bearing in a set of 2 | Specifies that the bearing is supplied as one of a universally matchable pair, designed to be mounted in a back-to-back (DB), face-to-face (DF), or tandem (DT) arrangement without selective assembly. |
71814 CD/P4DGA Bearing Structural Features & Performance Benefits
High Rigidity and Precision: The 15° contact angle and P4 tolerance class ensure high system rigidity and exceptional running accuracy, which is critical for machine tool spindles and other precision equipment. The extra light preload eliminates internal clearance, reducing deflection under load for improved machining quality.
Superior High-Speed Performance: The lightweight phenolic resin cage minimizes centrifugal forces, allowing for a high limiting speed of 28,000 rpm. This makes the bearing ideal for demanding high-speed applications.
Optimized Load Capacity: With a dynamic load rating of 5062 lbf and a static load rating of 7200 lbf, this bearing is engineered to handle significant combined radial and axial loads simultaneously, ensuring long service life and reliability.
Universal Matching Capability (SU): The Universal Matchable (SU) designation means any two bearings from this series can be paired without selective grinding, simplifying installation and ensuring consistent, high-performance preload in various mounting configurations.
71814 CD/P4DGA Bearing Typical Application Areas
The 71814 CD/P4DGA is ideally suited for high-performance machinery where precision, speed, and rigidity are paramount. Key application areas include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Rotary Tables: Indexing and positioning systems.
- High-Frequency Motors and Spindles: Applications requiring minimal runout and vibration.
- Medical and Dental Equipment: High-speed handpieces and scanners.
- Aerospace and Defense Systems: Gyroscopes, radar equipment, and other precision instruments.
