S71920 CEGA/P4A
Sealed Super Precision Angular Contact Ball Bearings
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S71920 CEGA/P4A Bearing Product Overview & Core Advantages
The S71920 CEGA/P4A is a super-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. As a single bearing from a universally matchable (SU) pair, it excels in supporting combined loads—simultaneously handling radial and axial forces. Its P4A tolerance class ensures extremely tight dimensional control, making it ideal for high-rigidity, high-reliability spindles and precision machinery where minimal runout and consistent performance are critical.
S71920 CEGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7 | Series designation for high-precision angular contact ball bearings. |
| 1920 | Bore size code (100 mm). |
| C | 15° contact angle, optimized for high-speed operation and moderate axial load capacity. |
| E | Optimized internal geometry for enhanced performance. |
| GA | Indicates universal matchable (SU) bearing, allowing flexible arrangement in pairs for preload control. |
| P4A | Super-precision tolerance class, exceeding ABEC 7/ISO P4 standards for exceptional running accuracy. |
S71920 CEGA/P4A Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The bearing's single-row design with a 15° contact angle provides high rigidity, effectively supporting combined radial and axial loads. The phenolic cage ensures lightweight and robust operation, contributing to stability under load.
High-Speed Performance: The optimized internal design and phenolic cage enable a high limiting speed of 16,250 rpm, making it suitable for demanding high-speed applications.
Precision & Accuracy: Manufactured to P4A tolerance class with strict bore, outside diameter, and width tolerances, this bearing guarantees minimal vibration and superior running accuracy.
Sealed & Lubricated for Life: As a sealed bearing pre-lubricated with grease, it offers protection against contamination and is maintenance-free within its specified temperature range of -30°C to 110°C.
S71920 CEGA/P4A Bearing Typical Application Areas
The S71920 CEGA/P4A is ideally suited for high-precision, high-speed machinery, including:
- Machine Tool Spindles (e.g., CNC milling, grinding, and turning centers)
- High-Frequency Spindles for PCB drilling and precision machining
- Precision Instrumentation and measuring equipment
- Robotic Arm Joints and precision automation systems
