71912 ACD/P4ADFD
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
71912 ACD/P4ADFD Bearing Product Overview & Core Advantages
The 71912 ACD/P4ADFD is a precision duplex angular contact ball bearing specifically engineered for applications demanding exceptional rigidity and accuracy. This matched face-to-face (DF) arrangement features a heavy preload (Class D), providing superior system stiffness and rotational precision. Its design is optimized to handle combined radial and axial loads simultaneously, making it an ideal choice for high-performance machinery requiring minimal deflection and maximum operational reliability.
71912 ACD/P4ADFD Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71912 | Basic bearing series and size designation |
| AC | Angular Contact design with a 25° contact angle |
| D | Duplex arrangement (two bearings) |
| P4A | High precision tolerance class with enhanced running accuracy |
| DF | Face-to-Face mounting configuration for increased moment stiffness |
71912 ACD/P4ADFD Bearing Structural Features & Performance Benefits
Enhanced Rigidity: The duplex face-to-face (DF) arrangement with heavy preload creates an exceptionally stiff bearing system that minimizes axial and radial deflection under load, ensuring precise positioning and vibration damping.
Superior Load Capacity: With a 25° contact angle and optimized internal geometry, this bearing efficiently handles combined radial and axial loads, featuring a dynamic load rating of 6795 lbf and static load rating of 6525 lbf.
Precision Performance: Manufactured to P4A tolerance class with tight dimensional control (bore/OD tolerance: -0.004mm to 0), this bearing delivers exceptional running accuracy and minimal rotational error.
High-Speed Capability: The phenolic cage and precision-ground chrome steel balls (7.938 mm diameter, 24 count) enable stable operation up to the limiting speed of 33,000 rpm.
71912 ACD/P4ADFD Bearing Typical Application Areas
This high-precision duplex bearing is specifically designed for demanding applications including: machine tool spindles, high-speed precision grinding equipment, industrial robotics and automation systems, medical imaging devices, and aerospace positioning systems where uncompromising accuracy and rigidity are critical.
