S71915 CE/HCP4A
Hybrid Ceramic Super Precision Bearings
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S71915 CE/HCP4A Bearing Product Overview & Core Advantages
The S71915 CE/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. This single-row bearing is distinguished by its P4 (ABEC-7) tolerance class, ceramic ball construction, and preload availability. Its primary advantage lies in its ability to handle high-speed operations and combined loads with superior rigidity and thermal stability, making it an ideal choice for high-reliability, precision machinery.
S71915 CE/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S71915 | Denotes the bearing series and size (75mm bore, 105mm OD, 16mm width). |
| CE | Indicates the use of hybrid ceramic balls (Silicon Nitride), which reduce centrifugal forces, lower operating temperature, and enable higher limiting speeds. |
| HC | Refers to the phenolic resin cage, which is lightweight and offers excellent performance in high-speed applications. |
| P4A | Specifies the P4 tolerance class (equivalent to ABEC-7), ensuring extremely tight dimensional and running accuracy for precision applications. |
S71915 CE/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic Design: The combination of chrome steel rings and ceramic balls significantly reduces friction and heat generation. This results in a higher limiting speed (20,500 rpm), extended service life, and improved reliability in high-speed spindles.
High Rigidity & Load Capacity: The 15° contact angle and precision-ground raceways are optimized to support significant combined radial and axial loads. The availability of preload further enhances system stiffness and rotational accuracy.
High-Speed Phenolic Cage: The lightweight and robust phenolic cage (HC) ensures stable operation at ultra-high speeds, minimizing centrifugal forces and maintaining ball guidance.
Precision & Thermal Stability: Manufactured to P4 tolerance, this bearing guarantees minimal runout and vibration. The ceramic balls exhibit lower thermal expansion than steel, contributing to consistent performance across the operating temperature range (-30° to 110 °C).
S71915 CE/HCP4A Bearing Typical Application Areas
The S71915 CE/HCP4A is ideally suited for high-performance applications where speed, precision, and reliability are critical. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: High-accuracy robotic arms and joints.
- Aerospace & Defense: Gyroscopes, navigation systems, and auxiliary power units.
- Medical Equipment: High-speed dental handpieces and surgical drill spindles.
