S71916 ACEGA/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Main Dimensions
Ball & Washer Dimensions
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S71916 ACEGA/P4A Bearing Product Overview & Core Advantages
The S71916 ACEGA/P4A is a super-precision angular contact ball bearing designed for the most demanding high-speed and high-rigidity applications. Engineered to a P4A tolerance class, it delivers exceptional running accuracy and dimensional stability. Its primary advantage lies in its ability to handle combined loads—significant radial and axial loads in one direction simultaneously—making it an ideal choice for spindles requiring maximum performance, compact design, and superior operational reliability.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| S | Super-precision bearing |
| 7 | Angular contact ball bearing |
| 1916 | Bore: 80 mm, Outside Diameter: 110 mm, Width: 16 mm |
| AC | 25° contact angle |
| E | Optimized internal design for high speed and low torque |
| GA | Light preload (Class A) |
| P4A | High-precision tolerance class (superior to ABEC 7) |
S71916 ACEGA/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The single-row design with a 25° contact angle and phenolic resin cage provides excellent rigidity, enabling the bearing to support substantial combined radial and axial loads with minimal deflection.
- Superior High-Speed Performance: The lightweight phenolic cage and optimized internal geometry, combined with grease lubrication, contribute to a high limiting speed of 28,000 rpm, making it a premier high-speed bearing.
- Exceptional Precision and Stability: Manufactured to P4A tolerance class with tight dimensional tolerances on the bore, outside diameter, and width, ensuring smooth, quiet, and vibration-free operation critical for precision machinery.
- Universal Matching (SU): This bearing is universally matchable, allowing for flexible arrangement in pairs (e.g., back-to-back or face-to-face) to accommodate complex load conditions without the need for selective assembly.
S71916 ACEGA/P4A Bearing Typical Application Areas
The S71916 ACEGA/P4A is specified for high-performance applications where precision, speed, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Instrumentation: Measuring and testing equipment.
- High-Frequency Motors and Spindles: Electric motor spindles and high-RPM drives.
- Aerospace and Defense Systems: Gyroscopes, navigation systems, and other critical rotating assemblies.
