7202 ACD/P4ADFD
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7202 ACD/P4ADFD Bearing Product Overview & Core Advantages
The 7202 ACD/P4ADFD is a precision duplex angular contact ball bearing designed for applications demanding exceptional rigidity and accuracy. This metric system bearing features a Face-to-Face (DF) matched arrangement and a Heavy preload (Class D), providing superior stability and resistance to complex combined loads. Its P4A tolerance class ensures high running accuracy, making it ideal for high-precision, high-rigidity spindles and machinery.
7202 ACD/P4ADFD Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7202 | Basic bearing series and size designation (15mm bore, 35mm OD). |
| AC | Angular Contact design with a 25° contact angle. |
| D | Heavy preload (Class D) for maximum system rigidity. |
| /P4A | High Precision Tolerance Class (P4A), exceeding ABEC 7 standards. |
| DF | Duplex Face-to-Face mounting arrangement. |
7202 ACD/P4ADFD Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex DF arrangement and heavy preload create an exceptionally stiff bearing system, capable of withstanding significant combined radial and axial loads from both directions. This is critical for minimizing deflection under operational stresses.
Precision Performance: Manufactured to P4A tolerance class with a 25° contact angle, this bearing guarantees high running accuracy and smooth operation, essential for applications requiring minimal runout and vibration.
Optimized Internal Design: The phenolic resin cage and 10 high-grade chrome steel balls contribute to smooth operation at high speeds, with a limiting speed of 95,000 rpm. The open design allows for optimized lubrication flow.
Material & Durability: Constructed from chrome steel for both rings and balls, the bearing offers high durability and a long operational life within a temperature range of -30°C to 110°C.
7202 ACD/P4ADFD Bearing Typical Application Areas
This high-precision, high-rigidity bearing is specifically engineered for demanding applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Drilling & Boring Spindles
- High-Frequency Motorized Spindles
- Robotic Arm Precision Joints
- High-Performance Pumps and Compressors
