7013 ACDGA/HCP4A
Hybrid Ceramic Super Precision 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 ACDGA/P4A is a **high-precision angular contact ball bearing** designed for demanding applications requiring exceptional rotational accuracy and rigidity. As a **single-row bearing** with **P4A tolerance class**, it delivers superior running precision and dimensional stability. Its **ceramic ball** construction enables outstanding **high-speed performance** while the **25° contact angle** provides excellent capacity for combined radial and axial loads. The **extra light preload (Class A)** ensures minimal friction and optimal positioning accuracy, making it ideal for **precision machinery** and **high-reliability systems**.
7013 ACDGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Advantage |
|---|---|---|
| AC | Angular Contact Design | Optimized for **combined loads** and high-speed operation |
| DGA | Universal Matchable (SU) with 25° Contact Angle | Enables precise **bearing arrangement** in sets of 3 for maximum rigidity |
| P4A | High Precision Tolerance Class | Exceptional dimensional accuracy and running precision |
Structural Features and Performance Benefits
High-Speed Capability: The combination of **ceramic balls** and **phenolic cage** material significantly reduces centrifugal forces and friction, enabling operation at **limiting speeds up to 31,000 rpm** while maintaining thermal stability.
Enhanced Rigidity: The **25° contact angle** and **extra light preload** configuration provide optimal stiffness for precise shaft positioning and minimal deflection under **combined loads**.
Precision Performance: Manufactured to **P4A tolerance class** with tight dimensional control (±0.004mm bore/OD tolerance), ensuring consistent **high-precision** operation in demanding applications.
Universal Matching: Designed as **Universal Matchable (SU)** bearings, allowing precise arrangement in sets of 3 for optimized preload and stiffness characteristics.
7013 ACDGA/HCP4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers and precision grinding spindles
- Precision Instrumentation: Measuring equipment and optical systems requiring exceptional accuracy
- High-Speed Motors: Spindle motors and high-frequency drive systems
- Aerospace Systems: Guidance systems and auxiliary power units
- Medical Equipment: Dental handpieces and surgical tool drives
