71907 CD/P4ADFB
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
71907 CD/P4ADFB Bearing Product Overview & Core Advantages
The 71907 CD/P4ADFB is a precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. This duplex bearing set, arranged in a Face-to-Face (DF) configuration, is preloaded to Class B (Light), ensuring minimal axial and radial play for superior system stability. Its primary advantage lies in its ability to handle combined loads—significant radial and axial loads from both directions—simultaneously. Manufactured to a P4A tolerance class, it guarantees high running accuracy, making it ideal for high-speed spindles and other precision machinery where high rigidity and reliability are paramount.
71907 CD/P4ADFB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71907 | Basic bearing designation, indicating a metric, light series angular contact ball bearing with a 35 mm bore, 55 mm OD, and 20 mm width. |
| C | Specifies a 15° contact angle, optimized for high-speed operation and high axial load capacity. |
| D | Indicates the bearing is part of a Duplex (matched pair) set. |
| P4A | Denotes a high-precision tolerance class, exceeding ABEC 7 standards, for exceptional dimensional and running accuracy. |
| DF | Specifies the Face-to-Face mounting arrangement of the duplex pair, which provides good moment load capacity and rigidity. |
| B | Indicates a Light preload is applied to the matched set, reducing deflection and improving system stiffness. |
71907 CD/P4ADFB Bearing Structural Features & Performance Benefits
Optimized Internal Geometry & Material Selection: The bearing features a 15° contact angle and is constructed from high-grade chrome steel for both rings and balls, ensuring high fatigue life and durability. The phenolic resin cage is lightweight and robust, contributing to smooth operation at high speeds and reduced centrifugal forces.
High Rigidity & Load Capacity: The duplex DF arrangement with a defined light preload eliminates internal clearance, resulting in significantly increased system rigidity. This configuration enables the bearing set to support substantial combined radial and axial loads from both directions simultaneously, making it exceptionally stable under complex loading conditions.
Precision & High-Speed Performance: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration. The combination of the phenolic cage, optimized internal design, and pre-applied lubrication allows for a high limiting speed of 56,000 rpm, suitable for demanding high-speed applications.
71907 CD/P4ADFB Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers where precision and rigidity are critical.
- Precision Spindles: Applications in PCB drilling, engraving, and high-frequency motors.
- Industrial Pumps & Compressors: For shafts requiring accurate axial positioning and handling of combined loads.
- Robotics & Automation: High-precision joints and rotary axes in robotic arms and CNC systems.
- Medical & Laboratory Equipment: Centrifuges and other devices demanding high rotational accuracy and reliability.
