7202 ACD/P4ADGA
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7202 ACD/P4ADGA Bearing Product Overview & Core Advantages
The 7202 ACD/P4ADGA is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. As a universal matchable (SU) bearing, it can be paired with another identical bearing in a back-to-back (DB) or face-to-face (DF) arrangement to optimize rigidity and load handling. Its key characteristics include the ability to support combined loads (radial and axial) simultaneously, a 25° contact angle for superior axial load capacity, and a P4A tolerance class ensuring ultra-precise running accuracy. This makes it ideal for high-reliability, high-precision machinery.
7202 ACD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| AC | Angular Contact design with a 25° contact angle. |
| D | High ball complement design for increased load capacity. |
| P4A | High-precision tolerance class, exceeding ABEC 7/ISO P4 standards, with specific running accuracy requirements. |
| DGA | Universal Matchable (SU) designation. Two bearings can be universally matched in a set to achieve a specific preload without selective mounting. |
7202 ACD/P4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The angular contact design and high ball complement (D) enable the bearing to support significant combined radial and axial loads. The 25° contact angle is optimized for handling substantial thrust loads in one direction.
- Superior High-Speed Performance: The lightweight and robust phenolic resin cage ensures stable operation and minimal centrifugal force at high speeds, contributing to a limiting speed of 95,000 rpm.
- Ultra-Precision Operation: Manufactured to a P4A tolerance class, this bearing guarantees minimal runout and vibration, which is critical for applications requiring extreme positional accuracy and smooth rotation.
- Universal Matching Capability (SU): The DGA suffix indicates that bearings are universally matchable. This allows for simplified mounting of preloaded pairs (back-to-back or face-to-face), significantly enhancing system stiffness and operational precision without the need for selective assembly.
- Material Quality: Constructed from high-grade chrome steel for both rings and balls, ensuring long service life and consistent performance under demanding conditions.
7202 ACD/P4ADGA Bearing Typical Application Areas
- Machine Tool Spindles (High-speed milling, grinding)
- Precision Gearboxes
- High-Frequency Motors and Spindles
- Medical and Dental Equipment
- Aerospace Instrumentation
- Robotic Arm Joints and Drives