706 ACD/P4A
Miniature Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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706 ACD/P4A Bearing Product Overview & Core Advantages
The 706 ACD/P4A is a single-row angular contact ball bearing designed for applications requiring high precision and superior dynamic performance. Engineered to P4 (ABEC-7) tolerance class, it delivers exceptional running accuracy and rotational stability. Its primary advantage lies in its ability to support combined loads—handling significant radial loads alongside substantial axial loads in one direction—thanks to its optimized 25° contact angle. This bearing is preloaded and comes lubricated from the factory, making it ready for immediate installation in demanding, high-speed machinery where reliability and precision are paramount.
706 ACD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 706 | Basic bearing series designation, indicating a metric, angular contact design with specific dimensional characteristics. |
| ACD | Angular Contact design with a 25° contact angle, optimized for high axial load capacity and rigidity. |
| P4A | Indicates a P4 (ABEC-7) tolerance class for high running accuracy, with the "A" suffix often denoting specific internal clearance or preload conditions for optimal performance. |
706 ACD/P4A Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: Manufactured to P4 tolerance class with a phenolic resin cage, this bearing ensures minimal vibration and high running accuracy, providing excellent system rigidity for precise positioning applications.
- Superior Load Capacity: The 25° contact angle and robust construction enable it to handle high combined radial and axial loads efficiently, making it suitable for applications with significant thrust forces.
- High-Speed Capability: The lightweight phenolic cage and optimized internal geometry contribute to a high limiting speed of 160,000 rpm, ideal for spindle and other high-speed rotary applications.
- Preload & Ready-to-Use: Supplied with factory-applied preload and lubrication, the bearing ensures immediate operational readiness, reduced assembly time, and consistent performance from startup.
706 ACD/P4A Bearing Typical Application Areas
- Machine Tool Spindles
- High-Speed Robotic Drives
- Precision Grinding & Milling Spindles
- High-Frequency Motors & Spindles
- Medical & Dental Handpiece Drives
- Aerospace Actuators & Instrumentation
