7202 ACDGA/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7202 ACDGA/P4A Bearing Product Overview & Core Advantages
The 7202 ACDGA/P4A is a single-row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and speed capability. Engineered to primarily accommodate combined loads (simultaneous radial and axial loads), this bearing features a 25° contact angle optimized for axial load capacity. Manufactured to P4A tolerance class, it guarantees ultra-precise dimensions and minimal runout, making it ideal for machine tool spindles and other high-performance machinery. Its universal matchable (SU) design allows for flexible mounting configurations in duplex sets to achieve specific preload and rigidity requirements.
7202 ACDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7202 | Basic bearing series and size designation (15mm bore, 35mm OD). |
| AC | Angular Contact design with a 25° contact angle. |
| DGA | Universal Matchable bearing. Can be paired in various duplex sets (DB, DF, DT) to adjust preload and stiffness. |
| P4A | High precision tolerance class exceeding ABEC 7 (ISO Class 4), with enhanced dimensional and running accuracy. |
7202 ACDGA/P4A Bearing Structural Features & Performance Benefits
- High-Speed Capability: The phenolic resin cage is lightweight and robust, contributing to lower friction and enabling the bearing to achieve a high limiting speed of 95,000 rpm. This makes it an excellent high-speed bearing for demanding applications.
- Superior Rigidity & Load Capacity: The angular contact design and high-grade chrome steel construction provide high rigidity, effectively supporting combined loads with significant axial component.
- Precision Performance: The P4A tolerance class ensures minimal vibration and precise shaft positioning, which is critical for applications requiring high rotational accuracy.
- Optimized Internal Geometry: Precision-ground raceways and 10 high-grade chrome steel balls (6.35mm diameter) ensure smooth operation and consistent performance under load.
7202 ACDGA/P4A Bearing Typical Application Areas
This precision angular contact bearing is ideally suited for high-performance machinery where speed, accuracy, and rigidity are paramount. Key applications include:
- Machine Tool Spindles (High-speed machining centers, grinding spindles)
- Precision Instrumentation
- High-Frequency Motors
- Robotic Arm Joints
- Medical Equipment (e.g., Dental handpieces)
