7013 ACD/P4ADBC
7000 Series Super Precision Angular Contact Ball Bearings
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7013 ACD/P4ADBC Bearing Product Overview & Core Advantages
The 7013 ACD/P4ADBC is a precision angular contact ball bearing configured as a duplex back-to-back (DB) matched set. Engineered for applications demanding exceptional rotational accuracy and rigidity, this bearing excels at simultaneously handling combined radial and axial loads from both directions. Its P4A tolerance class ensures superior running accuracy, while the moderate preload (Class C) minimizes axial and radial play, providing high system stiffness and precise shaft positioning. This makes it an ideal solution for high-performance, high-reliability machinery.
7013 ACD/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7013 | Basic bearing series, indicating a bore diameter of 65 mm, outside diameter of 100 mm, and width of 36 mm. |
| AC | Angular Contact design with a 25° contact angle, optimized for high axial load capacity. |
| D | Indicates a duplex back-to-back (DB) arrangement of two bearings, providing high moment rigidity. |
| P4A | Specifies a high precision tolerance class, exceeding ABEC 7/ISO P4 standards for superior running accuracy. |
| DB | Confirms the back-to-back mounting of the matched pair. |
| C | Denotes a moderate preload (Class C), balancing rigidity and operational smoothness. |
7013 ACD/P4ADBC Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex back-to-back configuration creates a wide, rigid support system that effectively resists moment loads and combined radial and bidirectional axial loads. With a radial dynamic load rating of 14,332 lbf and static load rating of 15,975 lbf, it delivers robust performance under demanding conditions.
Precision & High-Speed Performance: Manufactured to P4A tolerance class with a phenolic cage, this bearing ensures minimal vibration and stable operation at high speeds, with a limiting speed of 31,000 rpm. The phenolic cage offers excellent strength-to-weight ratio and operates smoothly at high rotational velocities.
Optimized Component Design: Constructed from chrome steel for both rings and balls, the bearing provides high durability and wear resistance. The use of 20 balls with a diameter of 11.112 mm ensures an optimal load distribution and long service life.
7013 ACD/P4ADBC Bearing Typical Application Areas
The 7013 ACD/P4ADBC is specifically designed for high-precision, high-stiffness applications, including:
- Machine Tool Spindles (milling, grinding, and turning centers)
- High-Speed Precision Spindles
- Industrial Pumps and Compressors
- Robotic Drives and Precision Gearboxes
- Aerospace and Defense Actuation Systems
