7011 CE/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
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7011 CE/HCP4A Bearing Product Overview & Core Advantages
The 7011 CE/HCP4A is a single row angular contact ball bearing engineered for applications demanding exceptional precision and high-speed performance. Its defining characteristic is the ability to support combined loads—simultaneously handling significant radial loads and axial loads in one direction. Manufactured to a P4 (ABEC-7) tolerance class, this bearing ensures superior running accuracy. The use of a phenolic cage and ceramic balls contributes to lower friction, higher limiting speeds, and extended service life, making it an ideal choice for high-reliability, high-rigidity applications.
7011 CE/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7011 | Standard bearing series designation, indicating a metric bore diameter of 55 mm, outside diameter of 90 mm, and width of 18 mm. |
| C | Denotes a 15° contact angle, optimized for high-speed operation and moderate axial load capacity. |
| E | Indicates an optimized internal design and enhanced internal geometry for superior performance. |
| HC | Signifies the use of Hybrid Ceramic components, specifically ceramic balls (Si3N4) in a steel ring structure. |
| P4 | Specifies the tolerance class P4 (ABEC-7), representing extremely high precision in dimensions and running accuracy. |
| A | Indicates that the bearing is supplied with a specific preload for enhanced rigidity and precise shaft positioning. |
7011 CE/HCP4A Bearing Structural Features & Performance Benefits
High-Speed & Low Friction Performance: The combination of ceramic balls and a lightweight phenolic resin cage significantly reduces centrifugal forces and friction, enabling a high limiting speed of 39,000 rpm. This hybrid construction also provides electrical insulation and is suitable for a wide temperature range from -30°C to 110°C.
High Rigidity & Precision: The angular contact design with a 15° contact angle and the application of a preload result in a very stiff bearing arrangement, minimizing deflection under load. The P4 precision ensures minimal runout and vibration, which is critical for maintaining accuracy.
Superior Load Capacity: Engineered to support combined loads, this bearing offers a high dynamic load rating of 3780 lbf and a static load rating of 2745 lbf, providing reliable performance in demanding conditions.
Lubrication & Maintenance: The bearing is supplied lubricated from the factory. The open seal type allows for easy re-lubrication and inspection, tailored to the specific application requirements.
7011 CE/HCP4A Bearing Typical Application Areas
The 7011 CE/HCP4A is ideally suited for high-performance machinery where speed, precision, and rigidity are paramount. Key application areas include:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- Precision Instrumentation: In medical devices, optical scanners, and coordinate measuring machines.
- High-Frequency Motors and Spindles: Used in PCB drilling, dental handpieces, and small turbochargers.
- Aerospace & Defense Systems: In gyroscopes, navigation systems, and auxiliary power units.
