7011 ACE/HCP4AH1DGA
Hybrid Ceramic Super Precision Bearings
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7011 ACE/HCP4AH1DGA Bearing Product Overview & Core Advantages
The 7011 ACE/HCP4AH1DGA is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. This universal matchable (SU) bearing is designed to accommodate combined loads (radial and axial) simultaneously, with its 25° contact angle providing optimal thrust capacity. Manufactured to P4A tolerance class, it delivers superior running accuracy and dimensional stability. The combination of a phenolic cage and ceramic balls enables high-speed operation up to 34,000 rpm, while the extra light preload (Class A) ensures smooth, precise rotation with minimal friction and heat generation, making it ideal for high-reliability, high-rigidity systems.
7011 ACE/HCP4AH1DGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix / Prefix | Technical Meaning |
|---|---|
| 7011 | Basic bearing series and size designation (55mm bore, 90mm OD, 36mm width). |
| ACE | Designates specific internal design, contact angle (25°), and enhanced performance features. |
| HC | Indicates the use of Hybrid Ceramic components (Ceramic balls with steel rings). |
| P4A | Specifies the high-precision tolerance class, exceeding ABEC 7/ISO P4 standards for exceptional dimensional and running accuracy. |
| H1 | Signifies the bearing is pre-lubricated with a specific high-performance grease. |
| DGA | Denotes a Universal Matchable (SU) bearing, allowing any two bearings to be mounted together in a back-to-back (DB), face-to-face (DF), or tandem (DT) arrangement without selective assembly to achieve a specific preload or tolerance. |
7011 ACE/HCP4AH1DGA Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and silicon nitride (Si3N4) ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and extends service life, especially at high speeds. Ceramic's inherent properties provide superior electrical resistance and operation in marginal lubrication conditions.
Phenolic Resin Cage: The lightweight and robust phenolic (polyamide) cage contributes to excellent high-speed performance and smooth operation by reducing inertia and providing superior guidance for the ceramic balls.
Universal Matchability (SU): The DGA suffix ensures that any two bearings from this group can be universally matched. This simplifies mounting, reduces inventory complexity, and provides design flexibility for achieving precise preload and system rigidity in paired arrangements.
High-Precision P4A Tolerance: Manufactured to ultra-precise P4A tolerances, this bearing guarantees minimal runout and vibration, which is critical for applications demanding the highest levels of rotational accuracy and positional control.
Optimized Load Capacity: With a 25° contact angle and robust internal geometry, this bearing effectively supports combined radial and axial loads, offering a dynamic load rating of 5850 lbf and a static load rating of 5220 lbf.
7011 ACE/HCP4AH1DGA Bearing Typical Application Areas
The 7011 ACE/HCP4AH1DGA is ideally suited for high-performance machinery where speed, precision, and rigidity are paramount. Key application areas include:
- High-Frequency Machine Tool Spindles: For CNC milling, grinding, and drilling centers requiring high rotational accuracy and speed.
- Precision Robotics: In robot arm joints and rotary actuators demanding high rigidity and responsive movement.
- Advanced Aerospace Systems: Including gyroscopes, navigation systems, and auxiliary power units (APUs).
- High-Speed Electric Motors & Generators: Particularly in applications benefiting from hybrid ceramic's high-speed capabilities and electrical insulation.
- Medical & Laboratory Equipment: Such as high-speed centrifuges and precision imaging devices.
