7013 ACD/P4AQBTC
7000 Series Super Precision Angular Contact Ball Bearings
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7013 ACD/P4AQBTC Bearing Product Overview & Core Advantages
The 7013 ACD/P4AQBTC is a precision angular contact ball bearing configured as a Quadruplex Tandem Back-to-Back (QBT) matched set. Engineered for applications demanding exceptional rigidity and accuracy, this bearing arrangement is specifically designed to handle combined loads with a primary focus on supporting high axial loads in one direction. Manufactured to P4A tolerance class, it offers superior running accuracy and is preloaded to Moderate / Class C for optimal stiffness and minimal deflection under operational forces. Its open design and phenolic cage contribute to its suitability for high-performance systems.
7013 ACD/P4AQBTC Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACD | Angular Contact Design with a 25° contact angle. |
| P4A | Indicates a high-precision tolerance class for superior dimensional and running accuracy. |
| QBT | Denotes the bearing is part of a Quadruplex (4 bearings) Tandem Back-to-Back matched arrangement. |
| C | Specifies a Moderate preload for enhanced system rigidity. |
7013 ACD/P4AQBTC Bearing Structural Features & Performance Benefits
Exceptional Rigidity and Load Capacity: The Quadruplex Tandem Back-to-Back (QBT) configuration provides an extremely rigid support system, capable of withstanding heavy combined loads. This setup is exceptionally effective at handling high axial loads in one direction while maintaining stability.
High-Precision Performance: Manufactured to P4A tolerance class with a 25° contact angle, this bearing ensures smooth, precise operation with minimal runout, making it ideal for high-speed, high-accuracy applications.
Optimized for High Speeds: The lightweight phenolic cage minimizes centrifugal forces, allowing for a high limiting speed of 31,000 rpm. The open design facilitates efficient lubrication management at these elevated speeds.
Robust Construction: Components made from chrome steel for both rings and balls ensure high durability, long service life, and consistent performance under demanding conditions.
7013 ACD/P4AQBTC Bearing Typical Application Areas
This high-precision, high-rigidity bearing set is typically employed in demanding industrial sectors, including:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers requiring utmost accuracy and rigidity.
- Precision Gearboxes: Especially in applications involving high axial thrust and rotational precision.
- Aerospace Actuation Systems: Where reliability and performance under extreme loads are critical.
- High-Speed Pumps and Compressors: For stable rotor support in demanding fluid handling equipment.
