71801 CDGB/HCP4
Hybrid Ceramic Super Precision Bearings
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71801 CDGB/HCP4 Bearing Product Overview & Core Advantages
The 71801 CDGB/HCP4 is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and speed performance. This single bearing features a 15° contact angle and is manufactured to P4 tolerance class, ensuring ultra-precise rotational characteristics. Its core advantages include the ability to accommodate combined loads (radial and axial), superior high-speed capability enabled by its phenolic cage and ceramic balls, and high operational reliability. It is universally matchable, allowing for precise preload configuration when used in sets.
71801 CDGB/HCP4 Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| 71801 | Basic bearing designation, indicating a metric, ultra-light series angular contact bearing with a 12mm bore. |
| C | Designates a 15° contact angle. |
| DGB | Indicates the bearing is universally matchable (SU designation). When two bearings are mounted face-to-face or back-to-back, a specific preload is achieved. |
| HC | Signifies the use of hybrid ceramic balls (ceramic balls with steel rings). |
| P4 | Specifies the tolerance class, representing very high precision with tight dimensional and running accuracy tolerances. |
71801 CDGB/HCP4 Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and extends service life, especially at high speeds.
Phenolic Cage: The lightweight and robust phenolic resin cage provides excellent dimensional stability and guidance, contributing to smooth operation and a high limiting speed of 140,000 rpm.
Precision & Rigidity: Manufactured to P4 tolerance class with a light preload (Class B), this bearing offers high running accuracy and system rigidity, minimizing deflection under load.
Load Capacity: The 15° contact angle is optimized to handle combined loads effectively, providing a robust solution for applications with significant radial and axial force components.
Universal Matching: As a universally matchable bearing, it allows for simplified mounting and precise preload control in duplex pairs (DB or DF arrangements), enhancing application flexibility.
71801 CDGB/HCP4 Bearing Typical Application Areas
This high-precision, high-speed bearing is ideally suited for:
- High-Frequency Spindles in PCB drilling and milling machines
- Precision Machine Tool main shafts and ball screws
- Turbochargers and other high-RPM automotive systems
- Dental and Medical Handpieces
- Advanced Robotics and automation equipment
