S7011 CD/P4ADBA
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
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S7011 CD/P4ADBA Bearing Product Overview & Core Advantages
The S7011 CD/P4ADBA is a precision duplex angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. This matched back-to-back (DB) arrangement is preloaded to Extra Light / Class A specifications, ensuring minimal axial and radial play for superior running accuracy. Its primary advantage lies in its ability to handle combined loads (radial and axial) simultaneously with high stability, making it an ideal solution for high-speed and high-rigidity spindles and precision machinery.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| S7011 | Basic bearing designation (55mm bore, 90mm OD, 36mm width). |
| C | 15° contact angle. |
| D | Duplex / Matched arrangement. |
| P4A | High precision tolerance class (superior to ABEC 7). |
| DB | Back-to-Back mounting configuration for high moment rigidity. |
| A | Extra light preload classification. |
S7011 CD/P4ADBA Bearing Structural Features & Performance Benefits
High Rigidity & Stability: The duplex back-to-back (DB) design creates a wide effective spread between load centers, significantly increasing the bearing's resistance to moment loads and providing exceptional system rigidity.
Superior Load Capacity: The angular contact design with a 15° contact angle is engineered to support substantial combined radial and axial loads in both directions.
Optimized High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the P4A precision and light preload contribute to smooth operation and a high limiting speed of 34,000 rpm.
Sealed & Pre-Lubricated: As a sealed bearing pre-lubricated with grease, it is protected from contamination and is ready for immediate installation, offering long-term, maintenance-free operation within its specified temperature range.
S7011 CD/P4ADBA Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, engraving, and high-frequency motor spindles.
- Robotics: High-accuracy rotary joints and arm actuators.
- Medical Equipment: Dental handpieces and laboratory automation.
- Test & Measurement Equipment: Instrumentation requiring ultra-precise rotation.
