S7011 CDGC/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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S7011 CDGC/P4A Bearing Product Overview & Core Advantages
The S7011 CDGC/P4A is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high rigidity. Operating under the stringent P4A tolerance class, this bearing is engineered to support combined loads (radial and axial) simultaneously. Its 15° contact angle and moderate preload (Class C) provide outstanding operational stability and stiffness, making it ideal for high-speed spindles and other precision machinery where minimal runout and high reliability are critical.
S7011 CDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| S7011 | Basic bearing series and size designation (55mm bore, 90mm OD). | Defines the core bearing dimensions. |
| CD | Contact angle of 15° and moderate preload. | Optimized for high rigidity and precise operation. |
| GC | Grease lubrication with a specific filling quantity. | Ensures optimal lubrication for the bearing's operational life. |
| P4A | High-precision tolerance class, exceeding ABEC 7. | Guarantees extremely tight dimensional and running accuracy for high-speed applications. |
S7011 CDGC/P4A Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The angular contact design and application of a moderate preload eliminate internal clearance, resulting in a very stiff bearing assembly capable of handling significant combined loads with high precision.
High-Speed Performance: The lightweight phenolic resin cage minimizes centrifugal forces, while the optimized internal geometry and grease lubrication contribute to a high limiting speed of 46,000 rpm, making it a true high-speed bearing.
Precision and Durability: Manufactured from high-grade chrome steel for both rings and balls, and built to P4A tolerances, this bearing ensures minimal vibration, long service life, and consistent performance in demanding conditions.
Universal Matching (SU): This bearing is universally matchable, allowing for simplified mounting in preloaded sets (up to 3 bearings) to achieve even higher system rigidity and accuracy without selective assembly.
S7011 CDGC/P4A Bearing Typical Application Areas
The S7011 CDGC/P4A is ideally suited for high-performance applications where precision and speed are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Articulated arms and high-accuracy positioning systems.
- High-Frequency Spindles: PCB drilling and routing machines.
- Medical Equipment: Dental handpieces and high-speed centrifuges.
- Aerospace & Defense: Gyroscopes, radar systems, and navigation instruments.
