71800 CD/P4DGA
71800 Series Super Precision Angular Contact Ball Bearings
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71800 CD/P4DGA Bearing Product Overview & Core Advantages
The 71800 CD/P4DGA is a super-precision angular contact ball bearing designed for applications demanding the highest levels of accuracy and performance. This metric series bearing features a 15° contact angle and an Extra Light (A) preload, making it ideal for high-speed spindles and precision machinery. Its core advantage lies in its ability to handle combined loads (radial and axial) simultaneously with exceptional rotational accuracy, thanks to its P4 tolerance class. The universal matchable (SU) design allows for flexible mounting arrangements in pairs, providing high system rigidity and operational stability.
71800 CD/P4DGA Bearing Model Code Explained, Specifications & Naming Convention
- 71800: Basic bearing series designation for a super-precision, miniature angular contact ball bearing.
- CD: Indicates a universal matchable (SU) bearing designed for duplex pairs (DB or DF mounting).
- P4: Denotes the tolerance class, equivalent to ABEC 7, ensuring extremely tight dimensional and running accuracy.
- DGA: Specifies the preload level. In this case, Extra light preload (Class A).
71800 CD/P4DGA Bearing Structural Features & Performance Benefits
High-Precision Construction: Manufactured to P4 tolerance class, this bearing guarantees minimal runout and vibration, which is critical for achieving superior surface finishes and machining accuracy.
Optimized for High-Speed Operation: The phenolic resin cage is lightweight and robust, enabling limiting speeds up to 95,000 rpm. The 15° contact angle provides an excellent balance between radial load capacity and high-speed axial load performance.
Universal Matching Capability (SU): The CD suffix indicates that these bearings are ground for universal matching. When mounted in pairs (back-to-back or face-to-face), they create a pre-stressed system that enhances rigidity and minimizes axial and radial play under operational conditions.
Superior Material & Lubrication: Constructed from chrome steel for both rings and balls, ensuring high durability and fatigue life. The bearing is pre-lubricated for immediate use and reliable operation within a temperature range of -30°C to 110°C.
71800 CD/P4DGA Bearing Typical Application Areas
- High-Frequency Spindles for PCB drilling and precision machining centers
- High-Speed Automation robots and manipulators
- Precision Instrumentation and medical device components
- Aerospace gyroscopes and navigation systems
- Optical Scanning and imaging equipment
