7011 ACEGA/HCP4AL
Hybrid Ceramic Super Precision Bearings
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Main Dimensions
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7011 ACEGA/HCP4AL Bearing Product Overview & Core Advantages
The 7011 ACEGA/HCP4AL is a single row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and speed capability. Manufactured to P4A super precision tolerance, this bearing delivers superior running accuracy and dimensional stability. Its ceramic ball construction and phenolic resin cage enable outstanding high-speed performance while maintaining dimensional stability across a wide temperature range. The bearing comes universally matchable (SU) in sets of two, allowing for precise preload configuration in back-to-back or face-to-face arrangements.
7011 ACEGA/HCP4AL Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Performance Benefit |
|---|---|---|
| 7011 | Basic designation: 55mm bore, 90mm OD, 18mm width | Standard dimension compatibility |
| AC | Angular Contact design | Optimized for combined radial and axial loads |
| EGA | Extra Light Preload (Class A) | Minimal friction, ideal for high-speed operation |
| HC | Hybrid Ceramic (Silicon Nitride balls) | Reduced weight, higher stiffness, electrical insulation |
| P4A | Super Precision Tolerance Class | Exceptional running accuracy and dimensional stability |
7011 ACEGA/HCP4AL Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings with silicon nitride ceramic balls provides superior performance characteristics including reduced centrifugal forces, higher stiffness, and excellent electrical insulation properties. This construction enables operation at limiting speeds up to 34,000 rpm while maintaining dimensional stability.
Phenolic Resin Cage: The phenolic resin cage offers excellent strength-to-weight ratio and operates effectively across the full temperature range (-30°C to 110°C). This cage material provides superior guidance for the 24 ceramic balls, ensuring stable operation at high rotational speeds.
Precision Engineering: Manufactured to P4A super precision standards with tight dimensional tolerances (bore/OD: -0.004mm to 0), this bearing delivers exceptional running accuracy and minimal vibration. The 25° contact angle is optimized for handling significant axial loads in one direction while accommodating radial loads.
Universal Matching Capability: As a universally matchable (SU) bearing supplied in sets of two, the 7011 ACEGA/HCP4AL allows for flexible mounting configurations to achieve optimal preload conditions and system stiffness.
7011 ACEGA/HCP4AL Bearing Typical Application Areas
- High-Speed Machine Tool Spindles: CNC machining centers, grinding spindles, and milling applications requiring precision and speed
- Precision Medical Equipment: Dental handpieces, surgical tools, and laboratory instrumentation
- Aerospace Systems: Gyroscopes, navigation systems, and auxiliary power units
- Semiconductor Manufacturing: Wafer handling robots, precision positioning stages, and cleanroom equipment
- High-Performance Motors: Servo motors, spindle motors, and high-frequency electric motors
- Test and Measurement Equipment: Coordinate measuring machines and optical inspection systems
