71801 ACD/HCP4DGA
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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71801 ACD/HCP4DGA Bearing Product Overview & Core Advantages
The 71801 ACD/HCP4DGA is a super-precision angular contact ball bearing engineered for the most demanding high-speed and high-rigidity applications. As a Universal Matchable (SU) bearing, it is designed to be mounted in pairs to form a preloaded duplex set, providing exceptional rotational accuracy and system stiffness. Its core advantages include the ability to handle combined radial and axial loads simultaneously, facilitated by a 25° contact angle. The use of a ceramic ball and phenolic cage combination enables superior high-speed performance and reduced rotational mass, making it an ideal choice for advanced machinery requiring the utmost precision and reliability.
71801 ACD/HCP4DGA Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| 71801 | The basic bearing series and size designation. |
| ACD | Angular Contact Design with a 25° contact angle. |
| HCP4D | Indicates a hybrid ceramic ball set and a Phenolic (resin) cage. |
| GA | Signifies Universal Matchable (SU) bearings with Extra Light (Class A) preload. |
71801 ACD/HCP4DGA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design and duplex mounting capability provide a very stiff bearing arrangement, capable of supporting significant combined loads from multiple directions.
- Superior High-Speed Performance: The combination of ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic cage allows for extremely high limiting speeds (up to 100,000 rpm), minimizing heat generation and power loss.
- Exceptional Precision: Manufactured to P4 tolerance class, this bearing guarantees extremely tight dimensional and running accuracy, which is critical for applications requiring minimal runout and vibration.
- Optimized for Matched Sets: As a Universal Matchable (SU) bearing, two identical bearings can be paired in a duplex set to provide a defined preload, simplifying installation and ensuring consistent performance.
71801 ACD/HCP4DGA Bearing Typical Application Areas
- Machine Tool Spindles
- High-Frequency Machining Centers
- Precision Grinding Spindles
- High-Speed Robotic Drives
- Advanced Dental and Medical Handpieces
- Aerospace Gyroscopes and Instrumentation
