7013 ACDGC/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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Product Overview and Core Advantages
The 7013 ACDGC/P4A is a precision angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. This single bearing features a 25° contact angle and is manufactured to P4A tolerance class, ensuring superior running precision. Its key advantage lies in its ability to accommodate combined loads, particularly substantial axial loads in one direction, while maintaining high-speed capability. The phenolic cage and universal matching designation make it ideal for high-performance, pre-compressed duplex arrangements.
7013 ACDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7013 | Standard bearing series number, defining the bearing dimensions (65mm bore, 100mm OD, 18mm width). |
| AC | Angular Contact design, optimized for combined radial and axial loads. |
| DGC | Duplex bearing with a Moderate preload (Class C). This suffix indicates the bearing is supplied with a specific internal clearance reduction for optimal stiffness in matched sets. |
| P4A | High-Precision Tolerance Class, exceeding ABEC 7 (ISO Class 4) standards. This ensures minimal runout and vibration for demanding applications. |
Structural Features and Performance Benefits
High Rigidity and Load Capacity: The angular contact design with a 25° contact angle and moderate preload (C) provides high axial and radial rigidity, enabling it to handle significant combined loads.
High-Speed Performance: The lightweight and robust phenolic resin cage ensures stability and low friction, contributing to the high limiting speed of 24,000 rpm. The open design facilitates efficient lubrication management.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional tolerances on the bore, outside diameter, and width, this bearing guarantees exceptional running accuracy and minimal vibration.
Universal Matching Capability (SU): This bearing is designed as a Universal Matchable unit, allowing two identical bearings to be paired in a back-to-back (DB) or face-to-face (DF) arrangement to accommodate axial loads in both directions or increase overall rigidity.
7013 ACDGC/P4A Bearing Typical Application Areas
The 7013 ACDGC/P4A is engineered for high-precision, high-speed rotational systems. Its primary applications include:
- Machine Tool Spindles: For milling, grinding, and turning centers requiring high rigidity and precision.
- High-Frequency Motors and Spindles: Where high rotational speeds and accuracy are critical.
- Precision Instrumentation: Used in measuring devices and analytical equipment.
- Robotic Drives and Servo Motors: For accurate positioning and dynamic performance.
