7011 ACD/P4ADGC
7000 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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7011 ACD/P4ADGC Bearing Product Overview & Core Advantages
The 7011 ACD/P4ADGC is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Operating under the P4A tolerance class, it delivers superior running precision. Its defining feature is the 25° contact angle and Universal Matchable (SU) designation, allowing two bearings to be universally paired in a back-to-back (DB) or face-to-face (DF) arrangement to withstand combined radial and axial loads from both directions. With a moderate preload (Class C) and phenolic cage, it is engineered for high-speed operation and stable performance in demanding industrial environments.
7011 ACD/P4ADGC Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| AC | Angular Contact design with a 25° contact angle. |
| D | Signifies a Universal Matchable (SU) bearing, one of a pair that can be universally arranged. |
| P4A | Indicates a high-precision tolerance class with enhanced dimensional and running accuracy. |
| DGC | Specifies a Moderate Preload (Class C) applied to the bearing, increasing rigidity and minimizing axial/radial play. |
7011 ACD/P4ADGC Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The angular contact design and moderate preload provide high system rigidity, enabling the bearing to effectively handle combined radial and thrust loads.
- High-Speed Performance: The lightweight and robust phenolic resin cage ensures stable operation and reduced centrifugal forces, contributing to a high limiting speed of 34,000 rpm.
- Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls on the bore diameter (55 mm), outside diameter (90 mm), and width (36 mm), ensuring predictable and precise performance.
- Optimized Internal Geometry: With 18 precision balls made of chrome steel and a specific contact angle, the bearing is optimized for low friction and high load-carrying efficiency.
7011 ACD/P4ADGC Bearing Typical Application Areas
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Robotic Arm Joints and Precision Gearboxes
