7200 ACD/P4ADGA
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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7200 ACD/P4ADGA Bearing Product Overview & Core Advantages
The 7200 ACD/P4ADGA is a precision angular contact ball bearing engineered for applications demanding exceptional accuracy and high-speed performance. As a Universal Matchable (SU) bearing, it is designed to be mounted in pairs to form a duplex arrangement, providing superior rigidity and the ability to handle combined loads (radial and axial) simultaneously. Manufactured to the stringent P4A tolerance class, it ensures minimal runout and high rotational accuracy. Its extra light preload (Class A) minimizes friction and heat generation, making it ideal for high-speed spindles and other precision machinery.
7200 ACD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 7200 | Basic series designation | Defines the standard boundary dimensions: 10mm bore, 30mm OD, 18mm width. |
| AC | Angular Contact | Optimized for combined radial and axial loads with a 25° contact angle. |
| D | Universal Matchable (SU) | Bearing is ground for universal pairing (DB, DF, DT arrangements) without selective mounting. |
| P4A | Tolerance Class | Denotes high precision with tight dimensional and running accuracy tolerances. |
| GA | Preload Code | Indicates Extra Light Preload (Class A), optimizing it for high-speed operation. |
7200 ACD/P4ADGA Bearing Structural Features & Performance Benefits
High-Precision Construction: Manufactured from chrome steel for both rings and balls, this bearing ensures high durability and consistent performance. The phenolic cage offers excellent dimensional stability and low friction, contributing to the high limiting speed of 185,000 rpm.
Superior Rigidity and Load Capacity: The angular contact design with a 25° contact angle provides robust support for combined loads. When mounted in a universal matched pair, the assembly delivers significantly increased rigidity and moment load capacity, which is critical for machine tool spindles.
Optimized for High-Speed Performance: The combination of the lightweight phenolic cage, extra light preload, and precision P4A grading minimizes friction and heat buildup, enabling stable operation at very high rotational speeds.
Pre-Lubricated for Immediate Use: The bearing comes lubricated from the factory, ensuring immediate installation and initial operation without the need for immediate re-lubrication.
7200 ACD/P4ADGA Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and CNC lathes.
- Precision Instrumentation: Measuring devices, optical scanners, and coordinate measuring machines (CMM).
- High-Speed Motors and Drives: Servo motors, spindle drives, and other high-RPM electric motors.
- Robotics: Joint and arm articulation systems requiring high precision and rigidity.
