7011 ACE/HCP4ADBA
Hybrid Ceramic Super Precision Bearings
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Main Dimensions
Ball & Washer Dimensions
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7011 ACE/HCP4ADBA Bearing Product Overview & Core Advantages
The 7011 ACE/HCP4ADBA is a precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This duplex back-to-back (DB) matched set features an Extra Light (Class A) preload, delivering superior rotational accuracy and system rigidity. Manufactured to P4A tolerance class, it ensures minimal runout and consistent high-speed operation. The combination of a ceramic ball material and phenolic cage enables outstanding performance under high limiting speeds of 34,000 rpm, making it an ideal solution for machine tool spindles and other high-precision machinery.
7011 ACE/HCP4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Benefit |
|---|---|---|
| ACE | 25° Contact Angle, Extra Light Preload | Optimized for combined radial and axial loads with minimal friction |
| HC | Hybrid Ceramic (Silicon Nitride Balls) | Reduced weight, lower friction, and extended service life at high speeds |
| P4A | ABEC 7 / ISO P4 Precision Class | Exceptional running accuracy and dimensional stability |
| DB | Duplex Back-to-Back Arrangement | Enhanced moment load capacity and system stiffness |
7011 ACE/HCP4ADBA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex back-to-back configuration creates a rigid bearing system capable of withstanding significant moment loads and combined radial and axial loads. The 25° contact angle is optimized for applications requiring substantial axial load capacity.
Superior High-Speed Performance: The hybrid ceramic design with silicon nitride balls reduces centrifugal forces, enabling higher limiting speeds (34,000 rpm). The phenolic cage provides excellent strength-to-weight ratio and operates effectively at high rotational velocities.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls (bore and OD tolerance: -0.004mm to 0), this bearing ensures minimal vibration and precise rotational characteristics essential for precision applications.
Temperature Stability: The hybrid construction and phenolic cage maintain stable performance across a wide temperature range from -30°C to 110°C, accommodating various operating environments.
7011 ACE/HCP4ADBA Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and milling applications
- Precision Instrumentation: Measuring equipment, optical instruments, and laboratory devices
- High-Speed Motors: Servo motors, spindle motors, and high-frequency applications
- Aerospace Components: Guidance systems, gyroscopes, and auxiliary power units
- Medical Equipment: Dental handpieces, surgical tools, and diagnostic imaging systems
