7203 CDGB/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
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7203 CDGB/P4A Bearing Product Overview & Core Advantages
The 7203 CDGB/P4A is a single-row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and rigidity. Operating under P4A tolerance class with a Light preload (Class B), this bearing delivers superior running accuracy and minimal vibration. Its 15° contact angle and universal matching (SU) capability enable optimal performance under combined radial and axial loads. Manufactured with chrome steel rings and balls and a phenolic cage, it achieves high-speed operation up to 103,000 rpm while maintaining dimensional stability across a temperature range of -30°C to 110°C.
7203 CDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7203 | Basic bearing designation: 17mm bore, 40mm OD, 12mm width |
| C | 15° contact angle design |
| D | Light preload (Class B) |
| GB | Universal matching bearing (SU designation) |
| P4A | High precision tolerance class (superior to ABEC 7) |
7203 CDGB/P4A Bearing Structural Features & Performance Benefits
Precision Engineering: The P4A tolerance class ensures minimal runout and vibration, critical for high-speed applications requiring exceptional rotational accuracy.
Optimized Load Capacity: With a 15° contact angle design, this bearing efficiently handles combined radial and axial loads, offering a dynamic load rating of 2077 lbf and static load rating of 934 lbf.
High-Speed Performance: The phenolic resin cage provides excellent strength-to-weight ratio and smooth operation at limiting speeds of 103,000 rpm, reducing centrifugal forces and maintaining stability.
Universal Matching Capability: Designed as Universal Matchable (SU), these bearings can be paired in various configurations (back-to-back, face-to-face, or tandem) to meet specific application requirements for stiffness and load distribution.
Thermal Stability: The chrome steel construction maintains dimensional integrity across a wide operating temperature range from -30°C to 110°C.
7203 CDGB/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers and grinding spindles
- High-Speed Motors: Servo motors, spindle motors, and high-frequency applications
- Precision Instrumentation: Measuring equipment, optical devices, and laboratory instruments
- Aerospace Components: Guidance systems, actuators, and auxiliary power units
- Medical Equipment: Dental handpieces, surgical tools, and diagnostic imaging systems
- Robotics: Joint mechanisms, rotary actuators, and precision positioning systems
