71802 ACD/HCP4DT
Hybrid Ceramic Super Precision Bearings
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71802 ACD/HCP4DT Bearing Product Overview & Core Advantages
The 71802 ACD/HCP4DT is a high-precision duplex tandem angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This matched pair bearing set features a P4 tolerance class and a 25° contact angle, enabling it to handle significant combined radial and axial loads. Its compact design, utilizing ceramic balls and a phenolic cage, is engineered for high-speed operation up to 121,000 rpm, offering superior rigidity and extended service life in precision machinery.
71802 ACD/HCP4DT Bearing Model Code Explained, Specifications & Naming Convention
| 71802 | Basic bearing series and size code (15mm bore, 24mm OD, 10mm width). |
| AC | Angular Contact design with a 25° contact angle. |
| D | Duplex arrangement. |
| HC | Hybrid Ceramic, indicating the use of ceramic balls. |
| P4 | Precision tolerance class, ensuring extremely tight dimensional and running accuracy. |
| DT | Duplex Tandem arrangement. The two bearings are matched to share the axial load in the same direction, increasing axial load capacity. |
71802 ACD/HCP4DT Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and silicon nitride (Si3N4) ceramic balls significantly reduces friction and heat generation. This construction provides superior high-speed performance, extended lubrication life, and increased operational reliability.
Optimized Duplex Tandem Design: The two bearings are factory-matched and preloaded in a tandem (DT) arrangement. This configuration is specifically designed to handle heavy unidirectional axial loads and combined loads, providing exceptional axial rigidity and positional accuracy.
Phenolic Resin Cage: The lightweight and robust phenolic cage ensures stable operation at very high speeds, offering excellent strength and guidance for the ceramic balls with minimal friction.
Precision P4 Tolerance: Manufactured to ABEC 7 / P4 standards, this bearing guarantees minimal runout and vibration, which is critical for applications requiring ultra-high precision and smooth rotation.
71802 ACD/HCP4DT Bearing Typical Application Areas
The 71802 ACD/HCP4DT is ideally suited for high-performance applications where speed, precision, and rigidity are paramount. Key industries and equipment include:
- High-Frequency Machine Tool Spindles
- Precision Grinding Spindles
- High-Speed Robotic Drives
- Dental and Medical Handpiece Drives
- Aerospace Actuation Systems
- Advanced Laboratory and Test Equipment
