7226 ACDGA/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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7226 ACDGA/P4A Bearing Product Overview & Core Advantages
The 7226 ACDGA/P4A is a single-row angular contact ball bearing engineered for applications demanding ultra-high precision and exceptional rotational accuracy. Manufactured to P4A tolerance class, this bearing delivers superior dimensional stability and running accuracy. Its 25° contact angle is optimized to support significant combined loads—handling both radial and axial forces simultaneously. The phenolic resin cage and universal matching (SU) capability make it ideal for high-speed spindle arrangements and other precision machinery requiring minimal runout and maximum rigidity.
7226 ACDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7226 | Basic bearing series, indicating metric dimensions: 130mm bore, 230mm OD, 40mm width |
| AC | Angular Contact design with 25° contact angle |
| DG | Universal matchable (Universal Matchable SU) for duplex arrangements |
| A | Extra light preload classification for minimal deflection under light loads |
| P4A | Super precision tolerance class exceeding ABEC 7 standards |
7226 ACDGA/P4A Bearing Structural Features & Performance Benefits
High Precision Construction: Manufactured to P4A tolerance class with extremely tight dimensional tolerances (bore/OD: -0.004mm to 0), ensuring exceptional running accuracy and minimal vibration.
Optimized Load Capacity: The 25° contact angle and 17 chrome steel balls (30.162mm diameter) provide excellent combined load capacity, with dynamic rating of 45,675 lbf and static rating of 47,700 lbf.
High-Speed Capability: The phenolic resin cage enables superior performance at limiting speeds up to 11,000 rpm, reducing friction and heat generation.
Universal Matching Design: As a universal matchable (SU) bearing, it can be paired in various preloaded configurations (back-to-back, face-to-face, or tandem) to achieve optimal stiffness and precision in spindle applications.
7226 ACDGA/P4A Bearing Typical Application Areas
The 7226 ACDGA/P4A is specifically designed for high-performance applications including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers
- Precision Rotary Tables: Indexing and positioning systems
- Aerospace Components: Gyroscopes and navigation systems
- Medical Equipment: High-speed dental handpieces and surgical tools
- Robotic Systems: Precision joints and articulation points
