S7013 CE/P4ADBB
Sealed Super Precision Angular Contact Ball Bearings
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S7013 CE/P4ADBB Bearing Product Overview & Core Advantages
The S7013 CE/P4ADBB is a super-precision angular contact ball bearing designed for applications demanding the highest levels of rotational accuracy and rigidity. This bearing is supplied as a matched duplex set in a back-to-back (DB) arrangement, providing exceptional stability and the ability to withstand combined loads (radial and axial loads from both directions). Manufactured to P4A tolerance class with a light preload (Class B), it is engineered for high-speed operation and superior performance in machine tool spindles and other precision equipment.
S7013 CE/P4ADBB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| S7013 | Bearing series and size designation | Indicates a 65 mm bore, 100 mm OD, 36 mm width bearing from the 70-series. |
| CE | High-precision designation | Denotes enhanced internal geometry and manufacturing precision for superior running accuracy. |
| P4A | Tolerance Class | Specifies extremely tight dimensional and running accuracy tolerances, superior to ABEC 7/ISO P4. |
| DBB | Duplex Back-to-Back Arrangement | Two bearings are universally matched and mounted back-to-back. This arrangement provides high moment stiffness and is optimal for withstanding overturning moments. |
S7013 CE/P4ADBB Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The back-to-back (DB) duplex arrangement creates a wide effective spread, significantly increasing the bearing set's resistance to moment loads and ensuring exceptional operational stability and high rigidity.
- Superior Load Capacity: With a 15° contact angle, this bearing is optimized to handle significant combined radial and axial loads simultaneously. The dynamic and static load ratings ensure reliable performance under demanding conditions.
- Optimized High-Speed Performance: The phenolic resin cage is lightweight and robust, reducing centrifugal forces and allowing for a high limiting speed of 36,000 rpm. The standard grease lubrication is suitable for this operational range.
- Precision Engineering: Manufactured to P4A tolerance class with a light preload, this bearing guarantees minimal runout and precise shaft positioning, which is critical for achieving high surface finishes and accuracy in machining applications.
S7013 CE/P4ADBB Bearing Typical Application Areas
The S7013 CE/P4ADBB is ideally suited for high-precision, high-speed machinery where accuracy and rigidity are paramount. Key applications include:
- Machine Tool Spindles: CNC machining centers, grinding spindles, and milling spindles.
- Precision Rotary Systems: High-frequency motors, precision spindles for PCB drilling, and dental handpieces.
- Aerospace & Defense Systems: Gyroscopes, radar platforms, and other instrumentation requiring ultra-precise rotation.
