7202 ACDGB/P4A
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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7202 ACDGB/P4A Bearing Product Overview & Core Advantages
The 7202 ACDGB/P4A is a high-precision, single-row angular contact ball bearing designed for applications demanding exceptional accuracy and reliability. Engineered to accommodate combined loads—primarily thrust loads in one direction alongside radial loads—its defining feature is the Universal Matchable (SU) designation. This allows multiple bearings to be precisely preloaded against each other in sets, creating a system of superior rigidity and rotational accuracy. Manufactured to the exacting P4A tolerance class, it is the ideal solution for high-speed spindles and other precision machinery.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7202 | Basic bearing series, indicating a 15mm bore, 35mm OD, and 11mm width. |
| AC | Angular Contact design with a 25° contact angle. |
| DGB | Duplex arrangement with a Light preload (Class B), indicating it is ground for back-to-back (DB) mounting. |
| P4A | Super-precision tolerance class, exceeding ABEC 7/ISO P4 standards for enhanced running accuracy. |
7202 ACDGB/P4A Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: The P4A tolerance class ensures minimal runout and vibration, while the universal matching capability allows for the creation of preloaded sets that deliver extremely high system stiffness.
- Optimized for High-Speed Operation: The lightweight phenolic resin cage reduces centrifugal forces, and the 25° contact angle provides an excellent balance between thrust capacity and speed, enabling a high limiting speed of 95,000 rpm.
- Superior Load Capacity: The bearing is designed to handle significant combined radial and axial loads, with a dynamic load rating of 1609 lbf and a static load rating of 720 lbf.
- Premium Materials: Constructed from chrome steel for both rings and balls, ensuring high durability, wear resistance, and long service life under demanding conditions.
7202 ACDGB/P4A Bearing Typical Application Areas
This precision angular contact bearing is engineered for the most demanding high-speed and high-accuracy applications, including:
- Machine Tool Spindles (High-speed milling, grinding, and turning centers)
- Precision Robotic Drives
- High-Frequency Spindles for PCB drilling and routing
- Medical and Dental Equipment (e.g., high-speed handpieces)
- Aerospace Instrumentation and control systems
