7202 CD/P4ADBC
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Main Dimensions
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7202 CD/P4ADBC Bearing Product Overview & Core Advantages
The 7202 CD/P4ADBC is a precision duplex angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. This metric system bearing features a back-to-back (DB) matched arrangement and a P4A super-precision tolerance class, making it ideal for high-speed spindles and other demanding machinery. Its primary advantage lies in its ability to support combined loads (radial and axial) simultaneously while maintaining high operational stability and stiffness. The moderate preload (Class C) ensures consistent performance and minimizes deflection under load.
7202 CD/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7202 | Basic bearing series, indicating a 15mm bore, 35mm OD, and 22mm width. |
| C | 15° contact angle, optimized for carrying significant axial loads. |
| D | Duplex (two single bearings supplied as a matched set). |
| P4A | Super-precision tolerance class, exceeding ABEC-7 standards for running accuracy. |
| DB | Back-to-Back arrangement, providing high moment rigidity and excellent stability. |
| C (in Preload) | Moderate preload class, reducing axial and radial play for enhanced system stiffness. |
7202 CD/P4ADBC Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) arrangement significantly increases the bearing's resistance to moment loads, providing exceptional system stiffness crucial for precision machining and high-load applications.
- Superior Load Capacity: With a 15° contact angle and a dynamic load rating of 2722 lbf, this bearing is engineered to handle substantial combined radial and axial loads efficiently.
- Precision High-Speed Performance: The P4A tolerance ensures minimal runout and vibration. Combined with the lightweight phenolic cage and a limiting speed of 95,000 rpm, it delivers smooth operation at high rotational velocities.
- Optimized Material & Lubrication: Components made from chrome steel offer high durability and wear resistance. The bearing is supplied lubricated, ready for immediate use within a temperature range of -30°C to 110°C.
7202 CD/P4ADBC Bearing Typical Application Areas
The 7202 CD/P4ADBC is specified for high-performance applications where precision and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Gearboxes and Robotic Drives.
- High-Frequency Motors and Spindles.
- Medical Equipment: Dental handpieces and imaging devices.
- Aerospace Actuation Systems.
