S7013 ACE/P4ADBB
Sealed Super Precision Angular Contact Ball Bearings
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S7013 ACE/P4ADBB Bearing Product Overview & Core Advantages
The S7013 ACE/P4ADBB 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 Light / Class B specifications, ensuring high system stiffness and minimal axial/radial runout. Its P4A tolerance class guarantees superior dimensional and running accuracy, making it ideal for high-speed spindles and other precision machinery where combined loads (radial and axial) are present. The sealed design with phenolic cage contributes to reliable, long-term performance.
S7013 ACE/P4ADBB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| S7013 | Basic bearing series (70-series) with 65mm bore | Denotes the bearing size and internal geometry. |
| ACE | 25° Contact Angle, Sealed | Optimized for high axial load capacity and sealed against contamination. |
| P4A | High Precision Tolerance Class | Exceeds ABEC-7 standards, ensuring ultra-precise running and dimensional accuracy. |
| DBB | Duplex Back-to-Back Arrangement | Two bearings are factory-matched and mounted back-to-back to withstand moment loads and provide high rigidity. |
S7013 ACE/P4ADBB Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex back-to-back (DB) arrangement creates a rigid bearing system capable of withstanding combined radial and axial loads as well as moment loads. The 25° contact angle is optimized for significant axial load support.
- Precision & High-Speed Performance: Manufactured to P4A tolerance class with a lightweight phenolic cage, this bearing ensures smooth operation and is suitable for high-speed applications up to 31,000 rpm.
- Sealed & Pre-lubricated: The integrated seals protect against contaminants and retain the factory-applied grease lubrication, enabling long service intervals and reliable operation within a temperature range of -30°C to 110°C.
- Matched Set Performance: Supplied as a pre-loaded pair, these precision bearings offer consistent, predictable performance, eliminating the need for on-site matching and simplifying installation.
S7013 ACE/P4ADBB Bearing Typical Application Areas
This high-precision, high-rigidity bearing is engineered for advanced applications including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Rotary Tables & Indexers: Where high axial stiffness and accuracy are critical.
- High-Frequency Spindles: For PCB drilling and precision engraving.
- Medical & Laboratory Equipment: Centrifuges and other high-speed precision instruments.
- Robotics: High-accuracy robot arm joints and gears.
