7203 CD/HCP4ADGB
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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7203 CD/HCP4ADGB Bearing Product Overview & Core Advantages
The 7203 CD/HCP4ADGB is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This universal matchable (SU) bearing features a light preload (Class B) and is manufactured to P4A tolerance class for superior running accuracy. Its key advantage lies in its ability to handle combined loads (radial and axial) efficiently, making it ideal for high-speed spindles and precision machinery. The combination of a ceramic ball material and phenolic cage contributes to its high limiting speed and excellent operational characteristics.
7203 CD/HCP4ADGB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7203 | Basic bearing series, indicating a 17mm bore, 40mm OD, and 24mm width. |
| CD | Designates a 15° contact angle and specific internal design optimized for high-speed operation. |
| HC | Indicates the use of Hybrid Ceramic balls (ceramic balls with steel rings). |
| P4A | Specifies the tolerance class, denoting very high precision for bore, outer diameter, and width. |
| ADGB | Signifies a Universal Matchable (SU) bearing, supplied as one of a pair (2 bearings in a matched set) with pre-applied lubrication. |
7203 CD/HCP4ADGB Bearing Structural Features & Performance Benefits
High-Speed Capability: The combination of ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic resin cage enables an extremely high limiting speed of 103,000 rpm, making it a premier high-speed bearing.
Superior Rigidity and Load Capacity: The 15° contact angle and precision-ground raceways provide excellent high rigidity and the ability to support significant combined loads.
Precision and Thermal Stability: Manufactured to P4A tolerance class for minimal runout and vibration. The phenolic cage offers good dimensional stability across the operating temperature range of -30°C to 110°C.
Matched Set Performance: As a Universal Matchable (SU) bearing supplied in a set of two, it ensures optimal preload and performance when mounted in a back-to-back or face-to-face arrangement, simplifying installation and enhancing system accuracy.
7203 CD/HCP4ADGB Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and CNC milling machines.
- Precision Instrumentation: High-accuracy measuring devices and laboratory equipment.
- High-Speed Motors and Drives: Servo motors, spindle motors, and other high-RPM electric drives.
- Aerospace and Defense Systems: Gyroscopes, navigation systems, and other critical components requiring high precision and reliability.
