S71910 ACEGB/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
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S71910 ACEGB/HCP4A Bearing Product Overview & Core Advantages
The S71910 ACEGB/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional rotational accuracy and rigidity. This sealed bearing features a universal matchable (SU) design, allowing two bearings to be mounted in any arrangement (back-to-back, face-to-face, or tandem) to optimize performance for specific load conditions. Its core advantages include the ability to handle combined radial and axial loads simultaneously, superior high-speed capability enabled by a phenolic cage and ceramic balls, and long-term, maintenance-free operation due to its integral seals and factory-applied grease.
S71910 ACEGB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S71910 | Precision series, 10mm bore diameter (19 series, 50mm bore) |
| AC | 25° Contact Angle |
| E | Optimized internal design for enhanced load capacity |
| GB | Preload: Light / Class B |
| HC | Hybrid Ceramic: Ceramic balls with steel rings |
| P4A | Tolerance Class equivalent to ABEC 7, with enhanced running accuracy requirements |
S71910 ACEGB/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4A tolerance class with a light preload (GB), this bearing provides exceptional running accuracy and shaft positioning stability, minimizing deflection under load.
- Superior High-Speed Performance: The combination of a lightweight phenolic cage and low-density ceramic balls significantly reduces centrifugal forces, enabling a high limiting speed of 34,000 rpm. This also reduces operating temperature and wear.
- Enhanced Load Capacity: The 25° contact angle and optimized internal geometry (E-design) provide excellent capacity for handling combined loads, particularly thrust loads in addition to radial loads.
- Long Service Life & Maintenance-Free Operation: The integral seals protect against contamination, while the factory-applied grease lubrication is suitable for a wide temperature range (-30°C to 110°C), ensuring long-term, reliable performance without re-lubrication.
S71910 ACEGB/HCP4A Bearing Typical Application Areas
- Machine Tool Spindles (High-speed machining centers, grinding spindles)
- Precision Instrumentation
- High-Frequency Motors and Spindles
- Medical and Dental Equipment
- Aerospace Actuation Systems
