71924 ACD/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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Product Overview and Core Advantages
The 71924 ACD/HCP4ADGA is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This universally matchable (SU) bearing features a 25° contact angle and extra light preload (Class A), making it ideal for applications requiring minimal deflection and high running accuracy. Its ceramic ball construction and P4A tolerance class ensure superior performance in high-speed and high-rigidity scenarios, capable of handling combined radial and axial loads simultaneously.
71924 ACD/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| 71924 | Basic designation: Bore diameter 120 mm, Outside diameter 165 mm, Width 44 mm |
| ACD | Angular Contact, 25° contact angle, Universal Matchable (SU) design |
| HC | Hybrid Ceramic: Features ceramic balls for enhanced performance |
| P4A | High precision tolerance class, superior to ABEC 7/ISO P4 standards |
| DGA | Preloaded universal match set (2 bearings), extra light preload |
Structural Features and Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls reduces friction, minimizes heat generation, and extends service life, particularly in high-speed applications. The phenolic cage provides excellent dimensional stability and reduced weight, contributing to higher limiting speeds.
High Precision and Rigidity: Manufactured to P4A tolerance class with precise dimensional control, this bearing delivers exceptional running accuracy. The 25° contact angle and universal matching capability allow for optimized preload configuration, ensuring high system rigidity and minimal deflection under load.
Superior Speed Performance: With a limiting speed of 16,250 rpm, the bearing is engineered for high-speed operation. The hybrid ceramic design and optimized cage construction significantly reduce centrifugal forces and friction, enabling stable performance at elevated speeds.
Optimized Load Capacity: Rated for 26,775 lbf dynamic and 38,925 lbf static radial loads, this bearing efficiently handles combined loads while maintaining precision. The universal match design allows for precise preload adjustment to meet specific application requirements.
71924 ACD/HCP4ADGA Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers and grinding spindles
- High-Speed Motors: Industrial motors and spindle drives requiring extreme accuracy
- Aerospace Systems: Guidance systems and aircraft instrumentation
- Medical Equipment: High-speed dental handpieces and surgical tools
- Precision Instruments: Measuring equipment and optical positioning systems
- Robotics: High-accuracy robotic joints and positioning arms
