71906 ACD/P4ADGB
71900 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
71906 ACD/P4ADGB Bearing Product Overview & Core Advantages
The 71906 ACD/P4ADGB is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. As a universal matchable (SU) bearing, it can be paired with another identical bearing in various configurations to optimize preload and system performance. Its primary advantages include the ability to handle combined loads (radial and axial), high limiting speed capabilities, and superior running accuracy ensured by its P4A tolerance class. This makes it an ideal choice for high-speed, high-precision spindles and machinery where reliability is critical.
71906 ACD/P4ADGB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71906 | Basic bearing series and size designation (30mm bore, 47mm OD, 18mm width). |
| AC | Angular Contact design with a 25° contact angle. |
| D | High load capacity due to optimized internal geometry. |
| P4A | Indicates a high-precision tolerance class superior to ABEC 7, ensuring minimal runout and vibration. |
| DGB | Universal Matchable (SU) arrangement designation. Two bearings can be mounted in a back-to-back (DB), face-to-face (DF), or tandem (DT) configuration. |
71906 ACD/P4ADGB Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The 25° contact angle and robust internal design enable this bearing to support significant combined radial and axial loads. The universal matching capability allows for precise preload setting (Light / Class B in this model), which dramatically increases system stiffness.
High-Speed Performance: The lightweight phenolic resin cage minimizes centrifugal forces, contributing to a high limiting speed of 83,000 rpm. This, combined with the optimized internal geometry, ensures stable operation at high rotational velocities.
Precision and Longevity: Manufactured to a P4A tolerance class from high-grade chrome steel, this bearing guarantees exceptional dimensional accuracy and smooth operation. The open seal type allows for customized lubrication schemes to further enhance performance and service life in demanding environments.
71906 ACD/P4ADGB Bearing Typical Application Areas
The 71906 ACD/P4ADGB is engineered for high-performance applications where precision and speed are paramount. Key industries and machinery include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Instrumentation: Measuring devices and laboratory equipment.
- High-Frequency Motors and Spindles: PCB drilling spindles and dental handpieces.
- Robotics: High-accuracy joints and rotary actuators.
