71805 ACDGA/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
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
71805 ACDGA/HCP4 Bearing Product Overview & Core Advantages
The 71805 ACDGA/HCP4 is a high-precision angular contact ball bearing designed for applications demanding extreme accuracy and high-speed performance. As a single bearing with a 25° contact angle and P4 tolerance class, it excels in providing high rigidity and precise rotational characteristics. Its core advantages include the ability to accommodate combined loads, superior high-speed capability facilitated by a phenolic cage and ceramic balls, and operation within a wide temperature range. This bearing is pre-lubricated and features an open design, making it an ideal choice for high-reliability, precision spindles and machinery.
71805 ACDGA/HCP4 Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| 71805 | Standard bearing series designation, indicating a metric, light series bearing with a 25mm bore. |
| AC | Angular Contact design, optimized for combined radial and axial loads. |
| D | High ball complement design for increased load capacity. |
| GA | Indicates a specific internal clearance and preload group (Extra light / Class A). |
| HC | Hybrid Ceramic, signifying the use of ceramic balls for reduced friction, higher speed, and longer service life. |
| P4 | The tolerance class, denoting very high precision in dimensions and running accuracy. |
71805 ACDGA/HCP4 Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces friction and heat generation, enabling a limiting speed of 103,000 rpm. This construction also provides electrical insulation and enhanced durability.
- Phenolic Cage: The lightweight and robust phenolic resin cage is ideal for high-speed applications, offering excellent dimensional stability and low friction at high rotational velocities.
- High-Precision P4 Tolerance: Manufactured to P4 tolerance class, this bearing ensures minimal runout and vibration, which is critical for applications requiring extreme rotational accuracy.
- Optimized Load Capacity: The 25° contact angle and high ball complement design provide excellent performance under combined radial and axial loads, with a dynamic load rating of 878 lbf and a static load rating of 686 lbf.
- Universal Matchable (SU): This bearing is supplied as a universally matchable single bearing, allowing for flexible arrangement in sets of two or more to achieve specific preload and stiffness requirements without selective mounting.
71805 ACDGA/HCP4 Bearing Typical Application Areas
The 71805 ACDGA/HCP4 is engineered for the most demanding precision applications, including:
- High-Frequency Spindles for PCB drilling and milling
- Precision Machine Tool Spindles
- High-Speed Motors and encoders
- Aerospace Instrumentation and gyroscopes
- Medical and Dental Handpieces
