71907 CD/P4ADFC
71900 Series Super Precision Angular Contact Ball Bearings
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71907 CD/P4ADFC Bearing Product Overview & Core Advantages
The 71907 CD/P4ADFC is a metric precision angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. This duplex face-to-face (DF) arrangement bearing set is preloaded to Moderate / Class C specifications, delivering superior system stability and minimizing axial and radial runout. Its primary advantage lies in its ability to handle combined loads efficiently, making it ideal for high-precision, high-rigidity applications where positioning accuracy is critical.
71907 CD/P4ADFC Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| 71907 | Basic bearing series and size designation (35mm bore, 55mm OD, 20mm width) |
| C | 15° contact angle, optimized for high-speed operation and moderate axial load capacity |
| D | Duplex (paired) bearing arrangement |
| P4A | High precision tolerance class with enhanced running accuracy requirements |
| DF | Face-to-Face mounting arrangement for increased moment load capacity and system rigidity |
71907 CD/P4ADFC Bearing Structural Features & Performance Benefits
Enhanced Rigidity & Stability: The duplex face-to-face (DF) arrangement with moderate preload creates a highly rigid bearing system that effectively resists operational deflection, ensuring precise shaft positioning and improved machining accuracy.
Superior Load Capacity: With a 15° contact angle and optimized internal geometry, this bearing efficiently handles combined radial and axial loads in both directions, making it suitable for complex loading conditions.
High-Speed Capability: The phenolic cage material provides excellent strength-to-weight ratio and smooth operation at high rotational speeds, contributing to the bearing's limiting speed of 56,000 rpm.
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 vibration for precision applications.
71907 CD/P4ADFC Bearing Typical Application Areas
- Machine Tool Spindles - High-precision milling, grinding, and turning centers
- Precision Gearboxes - Industrial transmission systems requiring high positional accuracy
- Robotic Joints & Actuators - Automation equipment demanding high rigidity and precision
- Medical Equipment - High-speed dental handpieces and surgical tools
- Aerospace Components - Guidance systems and precision mechanisms
