71800 CD/HCP4DBA
Hybrid Ceramic Super Precision Bearings
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71800 CD/HCP4DBA Bearing Product Overview & Core Advantages
The 71800 CD/HCP4DBA is a precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This duplex back-to-back (DB) matched set features a P4 tolerance class and ceramic balls, enabling superior high-speed capability and rigidity. Its configuration is optimized to handle combined loads—simultaneous radial and axial loads—making it ideal for high-precision, high-reliability machinery where minimal runout and thermal stability are critical.
71800 CD/HCP4DBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71800 | Basic bearing series, indicating a metric ultra-miniature angular contact design. |
| CD | Duplex pair configuration: Back-to-Back (DB) arrangement. This provides high moment rigidity. |
| HC | Hybrid Ceramic: Signifies the use of ceramic balls for reduced friction, higher speed, and longer life. |
| P4 | Tolerance class P4, denoting very high precision with tight dimensional and running accuracy tolerances. |
| DBA | Preload grade: Extra Light (Class A). This minimizes friction and heat generation at high speeds. |
71800 CD/HCP4DBA Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) arrangement of the two bearings creates a wide, stable support system that significantly increases moment stiffness and resists operational deflection.
- Superior High-Speed Performance: The combination of a lightweight phenolic cage, hybrid ceramic balls, and an extra light preload allows for a very high limiting speed of 95,000 rpm, reducing centrifugal forces and operational temperature.
- Enhanced Load Capacity: With a 15° contact angle, this bearing set is engineered to efficiently handle combined radial and axial loads.
- Precision & Longevity: Manufactured to P4 tolerance standards with chrome steel rings and ceramic balls, this set ensures minimal vibration, high running accuracy, and extended service life, especially in clean, lubricated environments.
71800 CD/HCP4DBA Bearing Typical Application Areas
This high-precision bearing set is ideally suited for applications where compact size, extreme speed, and high accuracy are paramount. Key industries and equipment include:
- High-Speed Spindles for PCB drilling and precision machining
- Medical and Dental Handpieces
- High-Frequency Motors and Servo Drives
- Optical Scanners and Encoders
- Aerospace Instrumentation and Gyroscopes
