S71916 ACD/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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S71916 ACD/HCP4ADGA Bearing Product Overview & Core Advantages
The S71916 ACD/HCP4ADGA is a super-precision double row angular contact ball bearing engineered for the most demanding applications. Its universal matchable (SU) design allows for flexible mounting arrangements in pairs to achieve optimal preload and stiffness. Featuring ceramic balls and a P4A tolerance class, this bearing delivers exceptional rotational accuracy, high-speed capability, and extended service life. It is pre-lubricated and sealed, making it a maintenance-free solution for high-performance spindles and precision machinery requiring superior rigidity and reliability under combined loads.
S71916 ACD/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Implication |
|---|---|---|
| ACD | 25° Contact Angle, Double Row Design | Optimized for handling significant combined radial and axial loads. |
| HC | Hybrid Ceramic (Silicon Nitride Balls) | Reduces friction, increases limiting speed, and provides longer life under poor lubrication conditions. |
| P4A | ABEC 7 / ISO P4 Tolerance Class | Guarantees extremely high running accuracy and minimal vibration for precision applications. |
| DGA | Sealed on Both Sides, Grease Lubricated | Provides effective contamination exclusion and is a lubricated-for-life solution, reducing maintenance. |
S71916 ACD/HCP4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The double row angular contact design and 25° contact angle provide superior radial and axial stiffness, enabling the bearing to handle heavy combined loads from multiple directions with high stability.
- Superior High-Speed Performance: The combination of lightweight phenolic resin cage and low-density ceramic balls significantly reduces centrifugal forces, allowing for a high limiting speed of 28,000 rpm. This makes it ideal for high-speed spindle applications.
- Enhanced Durability and Long Life: Hybrid ceramic construction offers excellent wear resistance and is less susceptible to electrical arcing. The sealed and pre-greased design ensures consistent lubrication, contributing to a long, maintenance-free operational life.
- Precision Engineering: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration, which is critical for achieving high surface finishes and positioning accuracy in precision equipment.
S71916 ACD/HCP4ADGA Bearing Typical Application Areas
This high-precision bearing is specifically designed for advanced machinery where accuracy, speed, and reliability are paramount. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- Medical Equipment: High-speed dental handpieces and imaging scanner rotors.
- Aerospace & Defense: Gyroscopes, radar systems, and navigation instruments.
- Semiconductor Manufacturing: Wafer handling robots and precision stages.
