S71909 CE/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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S71909 CE/HCP4ADGA Bearing Product Overview & Core Advantages
The S71909 CE/HCP4ADGA is a super-precision angular contact ball bearing designed for the most demanding industrial applications. This matched bearing set (Universal Matchable SU) provides exceptional rotational accuracy, high rigidity, and superior high-speed performance. Featuring a 15° contact angle and ceramic balls, it is engineered to handle combined radial and axial loads simultaneously. Its P4A tolerance class and phenolic cage ensure reliable operation in high-precision machinery, making it an ideal solution for applications requiring maximum reliability and minimal thermal expansion.
S71909 CE/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S71909 | Super-precision angular contact ball bearing series with 45mm bore |
| CE | Ceramic balls (Silicon Nitride) for reduced weight, higher speed capability, and longer service life |
| HC | Phenolic (resin) cage for optimal performance at high speeds |
| P4A | Extra-light preload and enhanced running accuracy tolerance class |
| DGA | Sealed on both sides and pre-lubricated with high-performance grease |
S71909 CE/HCP4ADGA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The universal matchable (SU) design allows two bearings to be mounted in any configuration (back-to-back, face-to-face, or tandem) to achieve optimal system rigidity. This enables the bearing set to handle significant combined loads (radial and axial) from any direction.
Superior High-Speed Performance: The combination of ceramic balls (lower density reduces centrifugal forces) and a lightweight phenolic cage allows for an exceptionally high limiting speed of 46,000 rpm. The 15° contact angle is optimized for high-speed applications requiring high precision.
Maintenance-Free Operation: The bearing is sealed and pre-lubricated with high-performance grease, providing long-term, maintenance-free operation within a wide temperature range of -30°C to 110°C. This sealed design protects against contamination, ensuring consistent performance and extended service life.
Precision Engineering: Manufactured to P4A tolerance class with an extra-light preload, this bearing delivers extremely low running noise and vibration, which is critical for maintaining the accuracy of high-speed spindles and other precision equipment.
S71909 CE/HCP4ADGA Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers
- Precision Instrumentation: Measuring machines, optical scanners, and coordinate measuring equipment
- High-Speed Motors & Drives: Servo motors, spindle motors, and turbo-molecular pumps
- Aerospace & Defense: Gyroscopes, navigation systems, and radar equipment
- Medical Equipment: Dental handpieces, centrifuges, and high-speed surgical tools
