S7011 CE/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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S7011 CE/HCP4A Bearing Product Overview & Core Advantages
The S7011 CE/HCP4A is a single-row angular contact ball bearing engineered for applications demanding ultra-high precision and superior high-speed performance. Its defining feature is the combination of a 15° contact angle, a phenolic resin cage, and ceramic balls, enabling it to handle significant axial loads in one direction while accommodating high radial loads. This bearing is preloaded and manufactured to P4 (ABEC-7) tolerance, ensuring exceptional running accuracy, rigidity, and rotational stability. The factory-applied lubrication and sealed design contribute to its reliability and long service life in demanding operational environments.
Model Code Breakdown
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| S7011 | Basic bearing series and size designation. | Indicates a metric, 55mm bore, 90mm OD, 18mm width bearing. |
| CE | Hybrid Bearing designation (Ceramic balls, Steel rings). | Signifies the use of ceramic balls, which reduce weight, friction, and heat generation, enhancing high-speed capability and service life. |
| HC | Phenolic Resin Cage. | Indicates a lightweight, high-strength phenolic cage that is ideal for high-speed and high-temperature applications, contributing to lower centrifugal forces and smooth operation. |
| P4A | Tolerance Class and Preload Specification. | Denotes a P4 (ABEC-7) precision tolerance class and a specific light preload ("A"), ensuring minimal runout, high rigidity, and precise shaft positioning. |
S7011 CE/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic-Steel Construction: The combination of ceramic balls with steel rings significantly reduces friction and operating temperature. This construction offers electrical insulation, higher limiting speed (25,000 rpm), and extended lubricant life compared to all-steel bearings.
High Rigidity & Load Capacity: The 15° contact angle is optimized to support substantial combined (radial and axial) loads, with a dynamic load rating of 3780 lbf and a static load rating of 2745 lbf. The preload further increases system stiffness, minimizing deflection under load.
Superior High-Speed Performance: The lightweight phenolic cage (HC) and low-density ceramic balls work in unison to reduce centrifugal forces and inertial effects, making this bearing exceptionally capable for very high rotational speeds.
Precision & Reliability: Manufactured to P4 precision tolerances, this bearing guarantees exceptional running accuracy and low vibration. The sealed and lubricated design ensures consistent performance and protects against contamination.
S7011 CE/HCP4A Bearing Typical Application Areas
The S7011 CE/HCP4A is ideally suited for high-performance machinery where speed, precision, and reliability are paramount. Key application areas include:
- High-Frequency Machine Tool Spindles
- Precision Grinding Spindles
- High-Speed Motors and Drives
- Aerospace & Defense Actuators and Control Systems
- Semiconductor Manufacturing Equipment
