7203 CDGA/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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7203 CDGA/P4A Bearing Product Overview & Core Advantages
The 7203 CDGA/P4A is a single row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and speed capability. As a P4A tolerance class bearing, it offers superior dimensional and running accuracy. Its 15° contact angle is optimized to support significant combined loads (radial and axial loads simultaneously). The bearing is universally matchable (SU), allowing for flexible mounting in preloaded duplex arrangements (DB, DF, DT) to achieve high system rigidity. Pre-lubricated and featuring a lightweight phenolic cage, it is engineered for high-speed performance and reliable operation in demanding environments.
7203 CDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7203 | Basic bearing series, indicating a 17mm bore, 40mm OD, and 12mm width. |
| C | Designates a 15° contact angle. |
| D | Indicates the bearing is part of a universally matchable (SU) pair. |
| GA | Specifies an Extra Light (Class A) preload. |
| P4A | Denotes a high-precision tolerance class superior to ABEC 7. |
7203 CDGA/P4A Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: Manufactured to P4A tolerance class with tight dimensional control, ensuring minimal runout and vibration. The 15° contact angle and capability for duplex mounting provide high axial and radial system rigidity.
- Optimized Load Capacity: The angular contact design efficiently handles combined radial and axial loads.
- Superior High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, enabling a high limiting speed. The bearing is pre-lubricated for immediate high-speed operation.
- Universal Matchability (SU): This feature allows two bearings to be paired in any preload configuration (face-to-face, back-to-back, or tandem) without selective matching, simplifying inventory and assembly for high-rigidity applications.
7203 CDGA/P4A Bearing Typical Application Areas
- Machine Tool Spindles
- High-Frequency Electric Spindles
- Precision Grinding Equipment
- High-Speed Pumps and Compressors
- Medical and Dental Equipment
- Robotic Arms and Precision Gearboxes
