S71910 ACB/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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S71910 ACB/HCP4A Bearing Product Overview & Core Advantages
The S71910 ACB/HCP4A is a high-precision angular contact ball bearing designed for applications demanding exceptional accuracy and performance. Engineered to a P4 (ABEC-7) tolerance class, it is ideally suited for high-speed spindles and other precision machinery. Its key advantage lies in its ability to accommodate combined loads—simultaneously handling significant radial and axial forces. The use of ceramic balls and a phenolic cage contributes to lower friction, higher limiting speeds, and extended service life, making it a superior choice for high-reliability applications.
S71910 ACB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Benefit |
|---|---|---|
| S71910 | Bearing series and size designation (50mm bore, 72mm OD, 12mm width) | Defines the core bearing dimensions. |
| ACB | 25° Contact Angle | Optimized for high axial load capacity and high rigidity. |
| HC | Hybrid Ceramic (Ceramic balls with steel rings) | Enables higher speeds, reduced heat generation, and longer life. |
| P4 | Tolerance class (ABEC-7) | Guarantees ultra-high precision and running accuracy. |
S71910 ACB/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces centrifugal forces and friction, directly contributing to its high limiting speed of 28,000 rpm and excellent performance in high-temperature environments.
Phenolic Resin Cage: The lightweight and robust phenolic cage ensures stable operation at ultra-high speeds, offering superior strength and guidance compared to metallic cages.
25° Contact Angle & Preload: The specified contact angle is engineered to provide optimal rigidity and thrust load capacity. The availability of preload ensures minimal axial and radial play, which is critical for the precise positioning required in machine tool spindles.
Sealed & Lubricated Design: The sealed construction protects against contamination and retains lubricant, ensuring consistent performance and reducing maintenance needs.
S71910 ACB/HCP4A Bearing Typical Application Areas
The S71910 ACB/HCP4A is a premier choice for high-performance applications, including:
- Machine Tool Spindles: CNC machining centers, grinding spindles.
- High-Speed Motors: Electric spindles, high-frequency motors.
- Precision Instrumentation: Measuring devices, semiconductor manufacturing equipment.
- Aerospace & Defense: Gyroscopes, navigation systems.
