S71909 CB/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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S71909 CB/HCP4ADGA Bearing Product Overview & Core Advantages
The S71909 CB/HCP4ADGA is a high-precision double row angular contact ball bearing engineered for applications demanding exceptional accuracy and reliability. This sealed bearing is distinguished by its P4A tolerance class and ceramic ball construction, enabling superior performance in high-speed and high-rigidity scenarios. Its fundamental design allows it to support combined loads—simultaneously carrying significant radial loads and bidirectional axial loads. The compact design, featuring a 45 mm bore and 68 mm outside diameter, offers a space-saving solution without compromising on performance or load capacity.
S71909 CB/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7 | High-precision angular contact bearing series |
| 1909 | Bore diameter: 45 mm, Outside diameter: 68 mm, Width: 24 mm |
| CB | Universal Matchable (SU) arrangement; two bearings are supplied as a pre-matched set |
| HC | Hybrid Ceramic: Ceramic balls with steel rings |
| P4A | High precision tolerance class, superior to ABEC 7 |
| DGA | Contact angle of 15° and Extra Light (Class A) preload |
S71909 CB/HCP4ADGA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row design provides a rigid support system, significantly increasing the bearing's moment stiffness. This enables it to handle demanding combined loads effectively. The specific 15° contact angle is optimized for high-speed operation while maintaining excellent axial load capacity.
Superior High-Speed Performance: The combination of ceramic balls and a lightweight phenolic cage is critical for high-speed applications. Ceramic balls reduce centrifugal forces and friction, while the phenolic cage ensures low inertia and excellent performance at the limiting speed of 46,000 rpm.
Precision & Longevity: Manufactured to a P4A tolerance class, this bearing guarantees minimal runout and vibration for ultra-precise applications. The integral seals retain the factory-applied grease lubrication, protecting against contamination and providing maintenance-free operation within the specified temperature range of -30°C to 110°C.
S71909 CB/HCP4ADGA Bearing Typical Application Areas
The S71909 CB/HCP4ADGA is ideally suited for high-performance machinery requiring precision and speed, including:
- High-Frequency Machine Tool Spindles
- Precision Grinding Spindles
- High-Speed Motors and Drives
- Aerospace & Defense Actuators
- Medical and Dental Handpiece Drives
