7013 ACDGA/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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7013 ACDGA/P4A Bearing Product Overview & Core Advantages
The 7013 ACDGA/P4A is a single-row angular contact ball bearing engineered for applications demanding ultra-high precision and exceptional rotational accuracy. Operating under P4A tolerance class, this bearing delivers superior dimensional stability and runout control. Its 25° contact angle is optimized to handle significant axial loads in one direction while supporting substantial radial loads. The phenolic resin cage ensures smooth operation at high speeds, making it ideal for high-speed spindles and precision machinery where rigidity and minimal thermal expansion are critical.
7013 ACDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Implication |
|---|---|---|
| AC | Angular Contact Design | Optimized for combined radial and axial loads |
| DGA | Universal Matchable (SU) with Extra Light Preload | Enables precise bearing arrangements in sets of 3 for maximum stiffness |
| P4A | Super Precision Tolerance Class | Exceeds ABEC 7 standards for exceptional running accuracy |
7013 ACDGA/P4A Bearing Structural Features & Performance Benefits
Precision Ground Components: Manufactured to P4A tolerance class with bore and OD tolerances of -0.004mm to 0, ensuring perfect fit and minimal runout in high-precision applications.
High-Speed Capability: The phenolic resin cage provides excellent strength-to-weight ratio and smooth operation at limiting speeds up to 31,000 rpm, reducing friction and heat generation.
Superior Load Capacity: With a 25° contact angle and 20 precision balls of 11.112mm diameter, this bearing achieves radial dynamic load rating of 8775 lbf and radial static load rating of 7988 lbf.
Universal Matching Design: As a Universal Matchable (SU) bearing, it can be supplied in precisely matched sets of 3 with extra light preload (Class A) for optimal stiffness in multi-bearing arrangements.
7013 ACDGA/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers requiring P4A precision
- Precision Robotics: High-accuracy robotic arms and CNC automation systems
- Aerospace Components: Gyroscopes, navigation systems, and aircraft instrumentation
- Medical Equipment: Dental handpieces, surgical robots, and MRI scanner components
- High-Frequency Spindles: PCB drilling machines and precision engraving equipment
