71807 CDGA/P4
71800 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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71807 CDGA/P4 Bearing Product Overview & Core Advantages
The 71807 CDGA/P4 is a metric single-row angular contact ball bearing designed for applications requiring high precision and exceptional running accuracy. Manufactured to P4 tolerance class, this bearing delivers superior dimensional stability and rotational precision. Its 15° contact angle is optimized for handling combined loads, particularly thrust loads in one direction, while maintaining high-speed capability up to 56,000 rpm. The phenolic resin cage and factory-applied lubrication ensure smooth operation and reduced friction, making it ideal for precision machinery where reliability and accuracy are paramount.
71807 CDGA/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71807 | Basic bearing designation indicating metric dimensions (35mm bore × 47mm OD × 7mm width) |
| C | 15° contact angle optimized for high-speed applications |
| DG | Universal Matchable (SU) - bearings can be paired in any combination |
| A | Extra light preload for minimal friction and optimal high-speed performance |
| P4 | High precision tolerance class with tight dimensional control |
71807 CDGA/P4 Bearing Structural Features & Performance Benefits
Precision Engineering: Manufactured to P4 tolerance standards with bore and outside diameter tolerances of -0.004mm to 0, ensuring exceptional dimensional accuracy and running precision.
High-Speed Capability: The combination of 15° contact angle, phenolic resin cage, and optimized lubrication enables reliable operation at speeds up to 56,000 rpm, making it suitable for high-speed spindle applications.
Superior Load Capacity: With a radial dynamic load rating of 1040 lbf and radial static load rating of 968 lbf, this bearing provides excellent performance under combined radial and axial loads.
Thermal Stability: The phenolic cage material offers excellent dimensional stability across the operating temperature range of -30°C to 110°C, maintaining performance in varying thermal conditions.
Universal Matching Design: As part of a universal matchable set (typically 3 bearings), the 71807 CDGA/P4 can be arranged in various configurations to meet specific application requirements for preload and stiffness.
71807 CDGA/P4 Bearing Typical Application Areas
- Machine Tool Spindles: High-precision milling, grinding, and turning centers requiring exceptional running accuracy
- High-Speed Electric Motors: Precision motors and servo drives where minimal vibration and high rotational speeds are critical
- Precision Instrumentation: Measuring equipment, optical instruments, and laboratory devices demanding ultra-precise rotation
- Aerospace Components: Guidance systems, gyroscopes, and other aerospace applications requiring reliability and precision
- Medical Equipment: High-speed dental handpieces, surgical tools, and diagnostic imaging systems
- Robotics and Automation: Precision joints, rotary tables, and positioning systems in industrial automation
