7011 CEGA/HCP4AL1
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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7011 CEGA/HCP4AL1 Bearing Product Overview & Core Advantages
The 7011 CEGA/HCP4AL1 is a single row angular contact ball bearing designed for the most demanding high-precision applications. Engineered to a P4A super-precision tolerance class, it delivers exceptional rotational accuracy and dimensional stability. A key feature is its universal matchable (SU) design, allowing bearings to be supplied in pre-matched sets for simplified installation and optimal preload control. The combination of a ceramic ball material and a phenolic cage enables superior high-speed performance and reduced rotational inertia. This bearing is pre-lubricated for immediate use and is capable of handling significant combined (radial and axial) loads.
7011 CEGA/HCP4AL1 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7011 | Basic bearing series and size designation (55mm bore, 90mm OD, 18mm width). |
| CE | Designates a 15° contact angle and specific internal geometry. |
| GA | Indicates a specific cage design and guidance, in this case a phenolic cage. |
| HC | Signifies the use of hybrid ceramic balls (silicon nitride). |
| P4A | Denotes a super-precision tolerance class with enhanced running accuracy. |
| L1 | Specifies a light preload category applied to the bearing. |
7011 CEGA/HCP4AL1 Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The use of ceramic balls provides significant advantages including lower density for reduced centrifugal force, higher stiffness, electrical insulation, and the ability to operate with less lubrication at high speeds.
Phenolic Resin Cage: This lightweight and robust cage material contributes to lower vibration, quieter operation, and excellent performance at the bearing's limiting speed of 34,000 rpm.
Precision & Rigidity: Manufactured to P4A tolerance class with strict dimensional control, this bearing ensures minimal runout and high system rigidity, which is critical for precise positioning and dynamic load capacity.
Universal Matching (SU): Bearings are supplied in sets of three, ground to be universally matchable. This allows for flexible mounting arrangements (back-to-back, face-to-face, or tandem) and simplifies achieving the correct preload for maximum stiffness and accuracy.
7011 CEGA/HCP4AL1 Bearing Typical Application Areas
The 7011 CEGA/HCP4AL1 is ideally suited for high-performance machinery requiring extreme precision and speed. Key application fields include:
- High-Frequency Machine Tool Spindles (milling, grinding, drilling)
- Precision Robotic Drives and Actuators
- High-Speed Dental and Medical Handpieces
- Aerospace Instrumentation and Gyroscopes
- Semiconductor Manufacturing Equipment
