7022 ACD/P4ADGC
7000 Series Super Precision Angular Contact Ball Bearings
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7022 ACD/P4ADGC Bearing Product Overview & Core Advantages
The 7022 ACD/P4ADGC is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. As a universal matchable (SU) bearing supplied in a pre-set pair, it excels at handling combined radial and axial loads simultaneously. Manufactured to the stringent P4A tolerance class, it offers superior running accuracy, making it ideal for high-speed spindles and other high-precision machinery. Its optimized internal geometry and phenolic cage contribute to stable performance at elevated speeds.
7022 ACD/P4ADGC Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| ACD | 25° Contact Angle, Universal Matchable Design | Optimized for combined loads and allows for flexible mounting arrangements in pairs (DB, DF, DT). |
| P4A | High Precision Tolerance Class (equivalent to ABEC 7) | Ensures extremely low runout and vibration for superior precision performance. |
| DGC | Moderate Preload (Class C) | Enhances system rigidity and minimizes axial/radial deflection under load, improving positional accuracy. |
7022 ACD/P4ADGC Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The 25° contact angle and universal matchable (SU) design enable the bearing pair to support significant combined radial and axial loads from both directions. The applied moderate preload (Class C) further increases system stiffness, critical for machining accuracy.
- High-Speed Performance: The lightweight and robust phenolic resin cage ensures excellent dimensional stability and low friction at high rotational speeds, contributing to a limiting speed of 10,000 rpm.
- Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls on the bore diameter, outside diameter, and width, guaranteeing predictable and precise performance in the most demanding applications.
- Durability & Reliability: Constructed from high-grade chrome steel for both rings and balls, the bearing offers high fatigue life and wear resistance, suitable for a temperature range of -30°C to 110°C.
7022 ACD/P4ADGC Bearing Typical Application Areas
The 7022 ACD/P4ADGC is engineered for high-performance applications where precision, speed, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles: Internal and external grinding machines.
- High-Frequency Motors: Spindles for PCB drilling and routing.
- Medical Equipment: High-speed centrifuges and dental handpieces.
- Robotics: Precision joints and arm assemblies requiring high rigidity.
