71802 ACD/HCP4
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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71802 ACD/HCP4 Bearing Product Overview & Core Advantages
The 71802 ACD/HCP4 is a single-row angular contact ball bearing engineered for applications demanding ultra-high precision and exceptional performance. Positioned in the P4 (ABEC-7) tolerance class, it is designed to provide superior rotational accuracy and rigidity. A key advantage is its ability to accommodate combined loads, efficiently handling both radial and significant axial loads in one direction. The combination of a ceramic ball material and a phenolic cage contributes to its high-speed capabilities, low friction, and extended service life, making it an ideal choice for high-speed spindles and other precision machinery.
71802 ACD/HCP4 Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| 71802 | Basic bearing designation indicating the series and size (15mm bore, 24mm OD). |
| AC | Angular Contact design with a 25° contact angle. |
| D | Indicates a high-precision design with a preload applied. |
| HC | Hybrid Ceramic, signifying the use of ceramic balls for enhanced performance. |
| P4 | Specifies the P4 (ABEC-7) tolerance class, denoting ultra-high precision. |
71802 ACD/HCP4 Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The single-row angular contact design, combined with a 25° contact angle and factory-applied preload, ensures high system rigidity and minimizes axial and radial runout, which is critical for precision applications.
- Superior High-Speed Performance: The phenolic resin cage offers excellent strength-to-weight ratio and low friction, while the ceramic (Si3N4) balls reduce centrifugal forces, lower operating temperatures, and enable higher limiting speeds compared to all-steel bearings.
- Enhanced Load Capacity: Engineered to support combined radial and axial loads simultaneously. The optimized internal geometry and high-quality materials provide a dynamic load rating of 486 lbf and a static load rating of 315 lbf.
- Optimized for Precision Applications: The open seal type allows for custom lubrication schemes, while the P4 tolerance class guarantees tight dimensional control for applications requiring the highest level of accuracy.
71802 ACD/HCP4 Bearing Typical Application Areas
The 71802 ACD/HCP4 is ideally suited for high-performance applications where precision, speed, and reliability are paramount. Key industries and equipment include:
- High-Frequency Machine Tool Spindles
- Precision Grinding Spindles
- Dental and Medical Handpiece Motors
- High-Speed Robotics and Automation Drives
- Aerospace Instrumentation and Guidance Systems
