7013 ACD/P4ADFC
7000 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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7013 ACD/P4ADFC Bearing Product Overview & Core Advantages
The 7013 ACD/P4ADFC is a precision duplex angular contact ball bearing set, designed for applications demanding exceptional rotational accuracy and rigidity. This matched pair, arranged in a Face-to-Face (DF) configuration, is preloaded to Moderate / Class C specifications, ensuring optimal stiffness and minimal axial/radial play under operating conditions. Its primary advantage lies in its ability to handle combined loads—significant radial loads alongside thrust loads in both directions—making it an ideal solution for high-precision spindles and other high-rigidity systems requiring superior running accuracy.
7013 ACD/P4ADFC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7013 | Basic bearing series; 65 mm bore, 100 mm OD, 36 mm width. |
| AC | Angular Contact design with a 25° contact angle. |
| D | Duplex set (two bearings supplied as a matched pair). |
| P4A | High-Precision Tolerance Class, exceeding ABEC 7/ISO P4 standards, ensuring extremely tight dimensional and running accuracy. |
| DF | Face-to-Face mounting arrangement. This configuration provides high moment rigidity and is tolerant of misalignment. |
| C | Specifies a Moderate preload (Class C), which increases system stiffness and improves rotational accuracy. |
7013 ACD/P4ADFC Bearing Structural Features & Performance Benefits
Optimized Internal Geometry & Materials: Manufactured from high-grade chrome steel for both rings and balls, this bearing ensures high durability and wear resistance. The phenolic cage contributes to smooth operation at high speeds with low friction and is suitable for the specified temperature range.
Superior Rigidity and Load Capacity: The duplex DF arrangement and moderate preload work in tandem to create an exceptionally rigid bearing system. This design effectively supports combined radial and bidirectional axial loads, with a dynamic load rating of 14,332 lbf and a static load rating of 15,975 lbf.
High-Speed Capability: The combination of the lightweight phenolic cage, precision P4A tolerances, and a 25° contact angle enables a high limiting speed of 31,000 rpm. This makes the bearing suitable for demanding high-speed applications.
Pre-Lubricated for Immediate Use: The bearing is supplied lubricated, ready for installation and initial operation, simplifying the mounting process.
7013 ACD/P4ADFC Bearing Typical Application Areas
The 7013 ACD/P4ADFC is engineered for high-performance machinery where precision and rigidity are paramount. Key application areas include:
- Machine Tool Spindles: For CNC machining centers, grinders, and lathes requiring high speed and accuracy.
- High-Frequency Motors and Spindles: Used in applications demanding minimal runout and high rotational stability.
- Precision Gearboxes and Drive Systems: Where accurate shaft positioning and load support are critical.
- Robotics and Automation: Particularly in robot arm joints and precision actuators.
