S71915 CB/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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S71915 CB/HCP4ADGA Bearing Product Overview & Core Advantages
The S71915 CB/HCP4ADGA is a super-precision double row angular contact ball bearing engineered for the most demanding applications. Its metric design combines a 15° contact angle with a P4A tolerance class and ceramic balls to deliver exceptional rotational accuracy, high rigidity, and superior speed capability. This bearing is distinguished by its ability to support combined loads (radial and bidirectional axial loads) simultaneously, making it an ideal choice for high-precision spindles and other machinery requiring uncompromising performance and reliability.
S71915 CB/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7 | Series designation for high-precision angular contact ball bearings. |
| 1915 | Bore diameter: 75 mm, Outside diameter: 105 mm, Width: 32 mm. |
| CB | Specific internal clearance and preload designation (Extra light / Class A). |
| HC | Hybrid Ceramic: Indicates the use of ceramic balls. |
| P4A | High-Precision Tolerance Class, exceeding ABEC 7/ISO P4 standards. |
| DGA | Sealed on both sides and pre-lubricated with grease. |
S71915 CB/HCP4ADGA Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The double row design provides a significantly stiffer support structure compared to single row bearings, enabling superior performance under combined loads. With a radial dynamic load rating of 5152 lbf and a static load rating of 5962 lbf, it handles heavy-duty operations with ease.
Enhanced High-Speed Performance: The combination of ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic cage minimizes friction and allows for a high limiting speed of 28,000 rpm. This makes it an exceptional high-speed bearing.
Super-Precision Operation: Manufactured to a P4A tolerance class with a 15° contact angle, this bearing ensures minimal runout and vibration, which is critical for achieving the highest levels of machining and positioning accuracy.
Long-Term Reliability and Low Maintenance: The integral seals (DGA) effectively protect the bearing from contaminants, while the factory-applied grease lubrication is suitable for a wide temperature range of -30°C to 110°C, offering a long, maintenance-free service life.
S71915 CB/HCP4ADGA Bearing Typical Application Areas
The S71915 CB/HCP4ADGA is ideally suited for high-performance machinery where precision, speed, and rigidity are paramount. Key application areas include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Instrumentation: High-accuracy measuring and testing equipment.
- High-Frequency Motors and Spindles: Applications requiring extreme rotational velocities.
- Aerospace and Defense Systems: Gyroscopes, navigation systems, and other critical components.
