S71912 ACB/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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S71912 ACB/HCP4ADGA Bearing Product Overview & Core Advantages
The S71912 ACB/HCP4ADGA is a precision double-row angular contact ball bearing engineered for applications demanding exceptional accuracy and rigidity. Its universal matchable (SU) design allows for flexible mounting arrangements while maintaining P4A super-precision tolerance. This bearing excels at simultaneously handling combined radial and axial loads in both directions, making it ideal for high-speed spindles and other high-rigidity applications. The combination of a phenolic cage and ceramic balls contributes to its superior high-speed performance and operational stability.
S71912 ACB/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7 | High-precision angular contact bearing series |
| 1912 | Standard size designation (60mm bore × 85mm OD × 26mm width) |
| ACB | 25° contact angle, universal matchable design |
| HCP4A | P4A tolerance class, high-precision grade |
| DGA | Sealed construction with grease lubrication |
S71912 ACB/HCP4ADGA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double-row angular contact design provides exceptional stiffness, enabling stable support under combined radial and axial loads. With a 25° contact angle and extra light preload (Class A), this bearing delivers precise rotational accuracy while handling bidirectional thrust loads effectively.
High-Speed Performance: The phenolic resin cage and ceramic balls work in synergy to achieve outstanding high-speed capabilities, reaching limiting speeds up to 36,000 rpm. The lightweight cage reduces centrifugal forces, while ceramic balls offer lower density and reduced thermal expansion.
Precision & Longevity: Manufactured to P4A super-precision standards with tight dimensional tolerances (bore/OD: -0.004mm to 0), this bearing ensures minimal runout and vibration. The sealed construction with factory-applied grease provides maintenance-free operation within the specified temperature range of -30°C to 110°C.
S71912 ACB/HCP4ADGA Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers, grinding spindles
- High-Speed Motors: CNC spindle drives, precision electric motors
- Medical Equipment: Dental handpieces, laboratory centrifuges
- Aerospace Systems: Gyroscopes, navigation instruments
- Semiconductor Manufacturing: Wafer handling robots, precision positioning stages
