S71912 CE/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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S71912 CE/HCP4A Bearing Product Overview & Core Advantages
The S71912 CE/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. Engineered to accommodate combined loads (radial and axial), this bearing features a 15° contact angle for optimal axial load capacity. Its P4 (ABEC-7) tolerance class ensures ultra-precise rotational accuracy, while the ceramic ball construction contributes to high-speed capability, reduced weight, and extended service life. This bearing is preloaded and comes lubricated and sealed for immediate installation and reliable, long-term operation.
S71912 CE/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Description | Technical Significance |
|---|---|---|
| S7 | Bearing Series | Indicates a high-precision angular contact ball bearing series. |
| 1912 | Size Code | Denotes a bore diameter of 60 mm, outside diameter of 85 mm, and width of 13 mm. |
| CE | Contact Angle & Design | Specifies a 15° contact angle and an optimized internal design. |
| HC | Hybrid Ceramic | Signifies the use of ceramic balls (typically silicon nitride) for higher speed, lower friction, and longer life. |
| P4A | Precision Class | Corresponds to P4 tolerance (ABEC-7), indicating very high running accuracy. |
S71912 CE/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of steel rings and ceramic balls significantly reduces centrifugal forces, enabling higher limiting speeds (26,000 rpm) and providing non-conductive properties. This construction also offers superior resistance to wear and a longer operational lifespan.
Phenolic Resin Cage: The lightweight and robust phenolic cage ensures excellent dimensional stability and guidance of the ceramic balls at high rotational speeds, contributing to smooth and quiet operation.
High-Precision & Preload: Manufactured to P4 precision class and supplied with preload, this bearing delivers exceptional rotational accuracy, minimal runout, and high rigidity, making it ideal for applications with precise positioning requirements.
Sealed and Lubricated: The integrated seals protect against contamination and retain lubricant, offering a maintenance-free solution for the designated temperature range of -30°C to 110°C.
S71912 CE/HCP4A Bearing Typical Application Areas
The S71912 CE/HCP4A is engineered for high-performance machinery where precision, speed, and reliability are paramount. Key application areas include:
- High-Speed Machine Tool Spindles: For CNC machining centers, grinding spindles, and milling applications.
- Precision Robotics: In robotic arm joints and high-accuracy actuators.
- Medical and Dental Equipment: Used in high-speed handpieces, centrifuges, and imaging devices.
- Aerospace and Defense Systems: For gyroscopes, navigation systems, and auxiliary power units.
- High-Frequency Motors and Spindles: In PCB drilling machines and other high-RPM electric motors.
