71800 ACD/HCP4
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
71800 ACD/HCP4 Bearing Product Overview & Core Advantages
The 71800 ACD/HCP4 is a single-row angular contact ball bearing engineered for applications demanding high precision and high-speed operation. As a metric series bearing, it is designed to primarily accommodate combined loads—significant axial loads in one direction along with radial loads—thanks to its defined 25° contact angle. A key feature is its P4 (ABEC-7) tolerance class, ensuring exceptional running accuracy for superior performance in precision machinery. The combination of a phenolic cage, ceramic balls, and factory-applied lubrication enables its outstanding limiting speed of 130,000 rpm, making it an ideal solution for compact, high-velocity spindles and instruments.
71800 ACD/HCP4 Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning | Performance Implication |
|---|---|---|
| 71800 | Basic series designation for a single-row angular contact ball bearing with a 10mm bore. | Defines the core bearing dimensions and type. |
| ACD | Angular Contact Design with a 25° contact angle. | Optimized for handling high axial loads in one direction in combination with radial loads. |
| HCP4 | Specifies a P4 (ABEC-7) tolerance class and a phenolic (Hybrid Cage, Phenolic) cage. | Delivers ultra-precision and reduced friction for high-speed applications. |
71800 ACD/HCP4 Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Design: The use of ceramic balls with a steel ring significantly reduces centrifugal forces, lowers operating temperature, and extends service life, especially at high speeds.
- Phenolic Resin Cage (HCP): This lightweight and robust cage material offers excellent dimensional stability and low friction, contributing directly to the bearing's high limiting speed and smooth operation.
- Precision P4 Tolerance: Manufactured to P4 (ABEC-7) tolerance standards, this bearing ensures minimal runout and vibration, which is critical for applications requiring high rigidity and accuracy.
- Optimized Load Capacity: The 25° contact angle is engineered to provide an optimal balance between radial and axial load ratings, making it suitable for demanding combined loads.
- Pre-lubricated & Open Seal: The open seal type allows for easy re-lubrication and is ideal for systems with centralized lubrication, while the factory-applied grease ensures immediate operational readiness.
71800 ACD/HCP4 Bearing Typical Application Areas
The 71800 ACD/HCP4 is specifically designed for high-performance applications where speed, precision, and compactness are paramount. Key industries and equipment include:
- High-Speed Machining Spindles (e.g., for PCB drilling, precision engraving)
- Precision Instrumentation and Optical Scanners
- Dental and Medical Handpieces
- High-Frequency Motors and Turbo-molecular Pumps
- Aerospace Actuators and Guidance Systems
