7003 CDGC/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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7003 CDGC/P4A Bearing Product Overview & Core Advantages
The 7003 CDGC/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. This single bearing features a 15° contact angle and is supplied as part of a Universal Matchable (SU) set, allowing for precise preload configuration when mounted with other bearings from the same set. Its P4A tolerance class ensures superior dimensional and running accuracy, making it ideal for high-speed spindles and other high-precision machinery. The phenolic cage and optimized internal geometry contribute to its high limiting speed and smooth operation under combined radial and axial loads.
7003 CDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7003 | Basic bearing series, indicating a metric 17mm bore, 35mm OD, and 10mm width. |
| C | 15° nominal contact angle. |
| DG | Universal Matchable (SU) bearing designation. |
| C | Moderate preload (Class C). |
| /P4A | High-precision tolerance class, exceeding ABEC 7 standards. |
7003 CDGC/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The 15° contact angle and robust internal construction enable the bearing to efficiently support significant combined loads (radial and axial). The Moderate preload (C) eliminates internal clearance, providing high system stiffness critical for machining accuracy.
- Superior High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the optimized internal geometry and high-grade chrome steel components allow for a very high limiting speed of 121,000 rpm, making it an excellent high-speed bearing.
- Precision and Stability: Manufactured to P4A tolerance class, this bearing guarantees minimal runout and consistent performance. The Universal Matchable (SU) feature ensures that bearings from the same set can be paired to achieve the exact preload and performance characteristics required by the application.
- Optimized for Performance: The bearing is pre-lubricated for immediate operation and features an open design, allowing for customized lubrication regimes to further enhance performance in specific operating conditions.
7003 CDGC/P4A Bearing Typical Application Areas
The 7003 CDGC/P4A is engineered for high-performance applications where precision and speed are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Instrumentation: Measuring devices, optical scanners, and coordinate measuring machines (CMM).
- High-Frequency Motors and Spindles: PCB drilling spindles and dental handpieces.
- Robotics: High-accuracy joints and actuators.
