71814 CD/P4DFA
71800 Series Super Precision Angular Contact Ball Bearings
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71814 CD/P4DFA Bearing Product Overview & Core Advantages
The 71814 CD/P4DFA is a precision angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. As a duplex face-to-face (DF) arrangement bearing set, it is preloaded to deliver superior system stiffness and minimize axial and radial runout. This configuration is engineered to handle combined loads efficiently, making it ideal for high-precision, high-speed machinery where stability and accuracy are paramount. Manufactured to P4 tolerance class, it guarantees ultra-precise dimensional and running accuracy.
71814 CD/P4DFA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71814 | Basic bearing designation indicating a metric, 70mm bore, 90mm OD, 20mm width angular contact bearing. |
| C | Specifies a 15° contact angle, optimized for high-speed operation and moderate axial load capacity. |
| D | Indicates the bearing is part of a duplex pair. |
| P4 | Denotes a high-precision tolerance class with extremely tight dimensional and running accuracy limits. |
| DF | Specifies the Duplex Face-to-Face mounting arrangement. |
| A | Indicates an Extra Light preload for minimal friction and optimal high-speed performance. |
71814 CD/P4DFA Bearing Structural Features & Performance Benefits
High Rigidity & Precision: The duplex face-to-face (DF) arrangement with an extra light preload (A) creates a highly rigid bearing system that effectively resists operational deflections, ensuring precise shaft positioning and excellent running accuracy under load. This is critical for applications demanding minimal runout.
Optimized for High Speeds: Featuring a lightweight phenolic resin cage and a 15° contact angle, this bearing is engineered for high-speed performance, achieving a limiting speed of 28,000 rpm. The phenolic cage offers high strength with low mass, reducing centrifugal forces and enabling smoother operation at high rotational velocities.
Superior Load Capacity: The design accommodates combined radial and axial loads simultaneously. With a dynamic load rating of 5062 lbf and a static load rating of 7200 lbf, it provides reliable performance in demanding conditions.
Pre-Processed for Immediate Use: The bearing set is supplied lubricated and matched, ready for installation. This simplifies mounting procedures and ensures immediate, optimal performance without the need for initial user lubrication or complex preload adjustment.
71814 CD/P4DFA Bearing Typical Application Areas
The 71814 CD/P4DFA is ideally suited for high-precision and high-speed machinery, including:
- Machine Tool Spindles: For grinding, milling, and turning centers requiring extreme accuracy and rigidity.
- High-Frequency Spindles: In PCB drilling and precision engraving machines.
- Precision Instrumentation: Used in measuring devices and optical scanners.
- Robotic Arms and Actuators: Providing precise and reliable rotary motion in automated systems.
