71818 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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71818 CDGA/P4 Bearing Product Overview & Core Advantages
The 71818 CDGA/P4 is a metric single-row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and rigidity. Positioned in the P4 tolerance class, this bearing delivers superior running accuracy for demanding operational environments. Its 15° contact angle is optimized to handle significant axial loads in one direction while accommodating radial loads, making it ideal for applications requiring precise axial positioning. The extra light preload (Class A) minimizes deflection under light loads, ensuring smooth operation and extended service life in precision machinery.
71818 CDGA/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71818 | Basic bearing designation indicating dimensions: 90mm bore, 115mm OD, 13mm width |
| C | 15° contact angle design |
| DG | Universal Matchable bearing (can be paired for duplex arrangements) |
| A | Extra light preload classification |
| P4 | High precision tolerance class with tight dimensional and running accuracy |
71818 CDGA/P4 Bearing Structural Features & Performance Benefits
High Precision Construction: Manufactured to P4 tolerance standards with bore and outside diameter tolerances of -0.004mm to 0, ensuring exceptional dimensional stability and running accuracy for precision applications.
Optimized Load Capacity: Features a 15° contact angle that provides superior axial load carrying capacity in one direction while maintaining effective radial load support, with dynamic load rating of 4860 lbf and static load rating of 5962 lbf.
Advanced Cage Design: Utilizes a phenolic resin cage that offers excellent strength-to-weight ratio, reduced friction, and superior performance at high speeds up to 15,000 rpm.
Premium Material Selection: Constructed from chrome steel for both rings and balls, providing high hardness, wear resistance, and dimensional stability across the operating temperature range of -30°C to 110°C.
Universal Matching Capability: Designed as Universal Matchable (SU) bearings, allowing precise duplex arrangements (back-to-back or face-to-face) when paired with another identical bearing for enhanced system rigidity and load distribution.
71818 CDGA/P4 Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers and precision grinding spindles requiring P4 accuracy
- Precision Instrumentation: Measuring equipment and optical instruments demanding minimal runout
- High-Speed Motors: Spindle motors and servo motors operating at elevated speeds
- Aerospace Systems: Guidance systems and aircraft instrumentation requiring reliable precision
- Medical Equipment: Dental handpieces and surgical tools where accuracy and reliability are critical
- Robotics: Precision joints and articulation points in industrial robots
