S71911 CB/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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S71911 CB/HCP4ADGA Bearing Product Overview & Core Advantages
The S71911 CB/HCP4ADGA is a super-precision double row angular contact ball bearing engineered for applications demanding exceptional accuracy, high rigidity, and superior speed performance. Its universal matchable (SU) design allows for simplified mounting in any arrangement. This bearing excels at simultaneously handling combined radial and axial loads from both directions, making it an ideal, compact solution for high-reliability, high-precision machinery. The use of ceramic balls and a P4A tolerance class further enhances its performance in demanding conditions.
S71911 CB/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7 | Indicates a super-precision bearing series. |
| 1911 | Denotes the standard size series with a 55 mm bore. |
| CB | Specifies a 15° contact angle and universal matchable (SU) design. |
| HC | Signifies the use of hybrid ceramic balls (Silicon Nitride). |
| P4A | Defines the tolerance class, which is superior to ABEC 7/ISO P4, with enhanced running accuracy. |
| DGA | Indicates the bearing is sealed on both sides and pre-lubricated with grease. |
S71911 CB/HCP4ADGA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row angular contact design provides exceptional stiffness, enabling stable support for spindles and shafts under significant combined loads.
Superior Speed Performance: The combination of a lightweight phenolic cage, low-friction ceramic balls, and optimized grease lubrication allows for a high limiting speed of 34,000 rpm, making it a true high-speed bearing.
Enhanced Durability & Longevity: Hybrid ceramic balls reduce wear, offer electrical insulation, and perform reliably across a wide temperature range (-30°C to 110°C). The integral seals (DGA) protect against contamination, ensuring long service life with minimal maintenance.
Precision Engineering: Manufactured to a P4A tolerance class, this bearing guarantees minimal runout and vibration, which is critical for achieving the highest levels of machining and operational accuracy.
S71911 CB/HCP4ADGA Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- High-Frequency Spindles: In PCB drilling and precision engraving machines.
- Precision Instrumentation: Used in measuring devices and optical systems.
- Robotics: For high-accuracy joints and arm assemblies.
