71801 ACD/P4DGC
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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71801 ACD/P4DGC Bearing Product Overview & Core Advantages
The 71801 ACD/P4DGC is a precision angular contact ball bearing designed for applications demanding exceptional accuracy and reliability. As a universal matchable (SU) bearing, it can be paired with another identical bearing in a back-to-back (DB) or face-to-face (DF) arrangement to handle combined loads effectively. Its P4 tolerance class ensures ultra-precise dimensions and running accuracy, making it ideal for high-speed spindles and precision machinery. The moderate preload (Class C) provides optimal stiffness and minimizes deflection under operational stresses.
71801 ACD/P4DGC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71801 | Basic bearing designation indicating the series and size |
| AC | Angular Contact design with 25° contact angle |
| D | High ball quantity and optimized internal geometry |
| P4 | Precision tolerance class for high running accuracy |
| DGC | Special designation for universal matchable bearings with moderate preload |
71801 ACD/P4DGC Bearing Structural Features & Performance Benefits
High Precision Construction: Manufactured to P4 tolerance class with extremely tight dimensional control (bore and OD tolerance: -0.004mm to 0), ensuring minimal runout and vibration for precision applications.
Optimized Internal Design: Features 14 precision balls with 2.381 mm diameter and a phenolic cage that provides excellent guidance and stability at high speeds up to 100,000 rpm.
Superior Load Capacity: The 25° contact angle enables efficient handling of combined radial and axial loads, with dynamic load rating of 718 lbf and static load rating of 504 lbf.
Universal Matching Capability: As an SU designation bearing, it can be universally matched in pairs without selective matching, simplifying installation and ensuring optimal preload configuration.
Premium Material Selection: Constructed from chrome steel for both rings and balls, providing excellent wear resistance and durability across a temperature range of -30°C to 110°C.
71801 ACD/P4DGC Bearing Typical Application Areas
Machine Tool Spindles: High-speed machining centers and precision grinding spindles requiring P4 precision and thermal stability.
Precision Instrumentation: Measuring equipment, optical instruments, and laboratory apparatus demanding minimal vibration and high running accuracy.
High-Speed Automation: Robotics, CNC tool changers, and automated assembly systems where combined load capacity and reliability are critical.
Aerospace Components: Guidance systems, actuator mechanisms, and auxiliary power units requiring precision motion control.
Medical Equipment: Dental handpieces, surgical tools, and diagnostic imaging systems where precision and reliability are paramount.
