S71913 CB/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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S71913 CB/HCP4A Bearing Product Overview & Core Advantages
The S71913 CB/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 ceramic ball material and P4 (ABEC-7) tolerance class, ensuring superior running accuracy and minimal vibration. Its key advantage lies in its ability to accommodate high combined loads, particularly excelling under high-speed conditions with a limiting speed of 24,000 rpm. The combination of a phenolic cage, preloaded design, and factory-applied lubrication makes it an ideal, ready-to-install solution for high-rigidity, high-reliability spindle systems.
S71913 CB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Benefit |
|---|---|---|
| 71913 | Standard bearing series designation, defining the basic dimensions: 65mm bore, 90mm OD, 13mm width. | Standardized sizing for easy integration and replacement. |
| C | Specifies a 15° contact angle. | Optimized for high-speed operation and moderate axial load capacity. |
| B | Indicates an increased internal design, often related to ball size and arrangement. | Enhances load rating and stiffness. |
| HC | Hybrid Ceramic: Signifies the use of ceramic balls with steel rings. | Reduces friction, heat generation, and wear; allows for higher speeds and longer service life. |
| P4A | Denotes a P4 (ABEC-7) tolerance class with specific running accuracy requirements. | Guarantees extreme precision, low noise, and minimal runout for high-performance applications. |
S71913 CB/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The use of ceramic balls (Silicon Nitride) with chrome steel rings significantly reduces centrifugal forces, friction, and operating temperature. This directly contributes to the bearing's exceptional high-speed performance and extended service life, even under demanding conditions.
- Phenolic Resin Cage: The lightweight and robust phenolic cage offers excellent dimensional stability and guidance at high rotational speeds, contributing to smooth operation and the high limiting speed.
- Precision P4 (ABEC-7) Grade: Manufactured to ultra-precise tolerances on bore, outer diameter, and width, this bearing ensures superior running accuracy, reduced vibration, and enhanced system stability, which is critical for precision machining.
- Preload & High Rigidity: The bearing is supplied with a preload, which eliminates internal clearance. This results in increased stiffness, precise shaft positioning, and improved dynamic response, making it ideal for applications requiring high rigidity.
- Optimized Lubrication: Factory-applied lubrication ensures immediate operational readiness and provides long-term, maintenance-free performance within the specified temperature range.
S71913 CB/HCP4A Bearing Typical Application Areas
The S71913 CB/HCP4A is designed for high-performance machinery where speed, precision, and reliability are paramount. Its key application fields include:
- Machine Tool Spindles: High-speed CNC milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, engraving machines, and high-frequency motor spindles.
- High-Speed Automation: Robotic arms, direct-drive systems, and precision positioning stages.
- Medical & Dental Equipment: High-speed handpieces and laboratory instrumentation.
- Aerospace & Defense: Gyroscopes, navigation systems, and auxiliary power units.
