S71916 ACD/HCPA9AQBCC
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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S71916 ACD/HCPA9AQBCC Bearing Product Overview & Core Advantages
The S71916 ACD/HCPA9AQBCC is a high-precision quadruplex angular contact ball bearing designed for extreme performance applications. This matched set arrangement features four bearings in a back-to-back (QBC) configuration, delivering exceptional system rigidity and stability. Engineered with ceramic balls and phenolic cage, it achieves superior high-speed capability while handling significant combined radial and axial loads. With PA9A tolerance class and pre-lubrication, this bearing ensures optimal accuracy and reliability in demanding operational environments.
S71916 ACD/HCPA9AQBCC Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Benefit |
|---|---|---|
| ACD | 25° contact angle, high precision | Optimized for axial load capacity and stiffness |
| HCPA9A | High precision tolerance class (PA9A) | Exceptional running accuracy and minimal vibration |
| QBCC | Quadruplex back-to-back arrangement | Maximum system rigidity and moment load resistance |
S71916 ACD/HCPA9AQBCC Bearing Structural Features & Performance Benefits
Enhanced Rigidity & Load Capacity: The quadruplex back-to-back configuration creates an extremely rigid bearing system capable of withstanding heavy combined loads and moment forces. With a 25° contact angle and four-bearing arrangement, it provides superior axial and radial load support.
High-Speed Performance: The combination of ceramic balls (silicon nitride) and phenolic resin cage enables exceptional high-speed operation up to 28,000 rpm. Ceramic balls reduce centrifugal forces, minimize friction, and provide excellent thermal stability.
Precision Engineering: Manufactured to PA9A tolerance class with tight dimensional controls (bore: -0.004mm to 0, OD: -0.004mm to 0), ensuring precise running accuracy and minimal vibration in high-speed applications.
Optimized Lubrication & Sealing: Factory-preloaded with high-performance grease and sealed construction provides maintenance-free operation within the specified temperature range (-30°C to 110°C).
S71916 ACD/HCPA9AQBCC Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers, grinding spindles, and CNC milling machines
- High-Speed Motors: Electric motor spindles, high-frequency spindles, and precision drives
- Aerospace Systems: Jet engine components, auxiliary power units, and flight control systems
- Medical Equipment: Dental handpieces, surgical tools, and high-speed medical scanners
- Robotics & Automation: Precision robotic arms, CNC rotary tables, and automated manufacturing systems
