7200 ACDGB/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7200 ACDGB/P4A Bearing Product Overview & Core Advantages
The 7200 ACDGB/P4A is a single-row angular contact ball bearing engineered for applications demanding high precision and superior running accuracy. Operating as a Universal Matchable (SU) bearing, it is designed to be mounted in pairs (back-to-back or face-to-face) to form a rigid bearing set capable of supporting combined loads—significant radial and one-directional axial loads. Its P4A tolerance class ensures extremely tight dimensional and running accuracy, making it ideal for high-speed spindles and other precision machinery. Pre-loaded with lubrication and featuring a phenolic cage, this bearing offers excellent high-speed performance, operational stability, and long-term reliability.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7200 | Basic bearing series, defining the boundary dimensions: 10mm bore, 30mm OD, 9mm width. |
| AC | Angular Contact design with a 25° contact angle, optimized for combined loads. |
| DGB | Universal Matchable bearing designation. Two bearings are universally matched and can be mounted in any combination (DB, DF, DT) without loss of preload performance. |
| P4A | Super-precision tolerance class, exceeding ABEC 7 standards. Ensures very tight running accuracy and high-speed capability. |
7200 ACDGB/P4A Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: Manufactured to P4A tolerance class, this bearing provides exceptional dimensional stability and running accuracy. When used in a universally matched set, it creates a highly rigid support system that minimizes deflection under load.
- Optimized Load Capacity: The 25° contact angle is engineered to efficiently handle combined radial and axial loads in one direction, a common requirement in precision spindles.
- Superior High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, lowers friction, and contributes to a high limiting speed of 185,000 rpm. The bearing is pre-lubricated for immediate, reliable operation at high speeds.
- Universal Matching Convenience: The Universal Matchable (SU) feature allows for simplified inventory and assembly, as any two bearings from the same lot can be paired to achieve the desired preload (Light / Class B in this case) without selective matching.
7200 ACDGB/P4A Bearing Typical Application Areas
The 7200 ACDGB/P4A is ideally suited for high-performance applications where precision, speed, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and CNC milling heads.
- Precision Instruments: Measuring equipment, optical scanners, and laboratory apparatus.
- High-Speed Motors and Drives: Servo motors, spindle motors, and turbo-molecular pumps.
- Robotics: High-accuracy joints and arm assemblies.
