S7011 CD/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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S7011 CD/P4A Bearing Product Overview & Core Advantages
The S7011 CD/P4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. Engineered to a P4 (ABEC-7) tolerance class, this bearing is preloaded and optimized to handle combined loads—simultaneously supporting significant radial and axial forces. Its compact design, featuring a phenolic cage and factory-applied lubrication, makes it an ideal solution for high-speed spindles and other precision machinery where reliability and performance are critical.
S7011 CD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Benefit |
|---|---|---|
| S7011 | Basic bearing series and size designation (55mm bore, 90mm OD). | Defines the core bearing dimensions and internal geometry. |
| C | 15° nominal contact angle. | Optimized for axial load capacity while maintaining good radial load performance. |
| D | The bearing is preloaded. | Increases system stiffness, reduces runout, and improves positional accuracy. |
| P4 | Precision tolerance class (ABEC-7). | Guarantees tight dimensional and running accuracy for high-precision applications. |
| A | The bearing has a basic accuracy that meets ABEC-7 standards. | Ensures consistent, high-performance operation. |
S7011 CD/P4A Bearing Structural Features & Performance Benefits
High Rigidity and Precision: The angular contact design with a 15° contact angle and factory-applied preload (D) provides superior axial and radial stiffness, minimizing deflection under load for exceptional machining or positioning accuracy.
Optimized for High-Speed Operation: The lightweight phenolic resin cage ensures stability and low friction at the bearing's high limiting speed of 15,000 rpm. This makes it a true high-speed bearing.
Superior Load Capacity: With a dynamic load rating of 8932 lbf and a static load rating of 7312 lbf, this bearing is built to handle the combined loads encountered in demanding applications.
Sealed and Lubricated for Life: As a sealed bearing that is pre-lubricated, it is protected from contamination and is ready for immediate use, offering long-term, maintenance-free operation within its specified temperature range.
S7011 CD/P4A Bearing Typical Application Areas
The S7011 CD/P4A is ideally suited for high-performance machinery where precision and speed are non-negotiable. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and rotary actuators requiring high rigidity.
- Medical Equipment: High-speed dental handpieces and imaging scanner rotors.
- Aerospace & Defense: Gyroscopes, radar systems, and auxiliary power units.
