S71910 CD/HCP4A
Hybrid Ceramic Super Precision Bearings
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Main Dimensions
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S71910 CD/HCP4A Bearing Product Overview & Core Advantages
The S71910 CD/HCP4A is a single-row angular contact ball bearing engineered for high-precision and high-speed applications. This metric precision bearing is distinguished by its ceramic balls and P4 (ABEC-7) tolerance class, ensuring exceptional running accuracy and minimal vibration. Its 15° contact angle is optimized to support significant combined loads, effectively handling both radial and one-directional axial forces. Pre-loaded and pre-lubricated, this bearing offers high rigidity and is ready for immediate installation in demanding environments requiring superior performance and reliability.
S71910 CD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| S71910 | Denotes the bearing series and size. A single-row, angular contact bearing with a 50mm bore, 72mm OD, and 12mm width. |
| C | Specifies a 15° contact angle, balancing axial and radial load capacity. |
| D | Indicates the bearing is supplied with a preload for enhanced rigidity and precise shaft positioning. |
| HC | Signifies the use of Hybrid Ceramic components, specifically ceramic balls, which reduce friction, heat generation, and allow for higher speeds. |
| P4A | Defines the tolerance class P4 (ABEC-7), representing ultra-precision manufacturing standards for minimal runout and vibration. |
S71910 CD/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and extends service life, especially in high-speed applications.
Phenolic Resin Cage: The lightweight and robust phenolic cage ensures excellent guidance and stability of the ceramic balls at very high rotational speeds, contributing to the bearing's limiting speed of 22,000 rpm.
High Rigidity & Preload: The preload applied to the bearing eliminates internal clearance, resulting in superior shaft rigidity and precise rotational accuracy, which is critical for machine tool spindles.
Precision & Load Capacity: Manufactured to P4 tolerance, this bearing offers exceptional dimensional stability. With a dynamic load rating of 3038 lbf and a static load rating of 2340 lbf, it reliably handles demanding combined loads.
S71910 CD/HCP4A Bearing Typical Application Areas
The S71910 CD/HCP4A is ideally suited for high-performance machinery where precision, speed, and reliability are paramount. Key applications include:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- High-Frequency Motors & Spindles: Where minimal friction and heat generation are required.
- Precision Instrumentation: Including measuring and testing equipment.
- Aerospace & Defense Systems: For auxiliary units and control surface actuators requiring high reliability.
