71926 CD/HCP4ADGA

• 71926: Basic series number, indicating a high-precision, light-weight angular contact bearing series with a 130mm bore.
• C: Represents a 15° contact angle, optimized for high-speed operation.
• D: Indicates the bearing is part of a universal matchable (SU) pair.
• HC: Stands for Hybrid Ceramic, signifying the use of ceramic balls.
• P4A: Denotes a super-precision tolerance class exceeding ABEC 7/ISO P4 standards, ensuring minimal runout and vibration.
• ADGA: Specifies the preload level as Extra Light (A).

Superior High-Speed Capability: The combination of a lightweight phenolic cage and low-density ceramic (Si3N4) balls significantly reduces centrifugal forces, enabling the bearing to achieve a high limiting speed of 7,500 rpm. The 15° contact angle further enhances high-speed stability.

Exceptional Rigidity and Load Capacity: The bearing's optimized internal geometry and high-grade chrome steel rings provide high system rigidity. With a dynamic load rating of 33,300 lbf and a static load rating of 48,600 lbf, it reliably handles significant combined loads.

Ultra-Precision Operation: Manufactured to P4A tolerance class with extremely tight dimensional tolerances on the bore, outside diameter, and width, this bearing guarantees exceptional running accuracy and minimal non-repetitive runout (NRRO).

Reduced Friction and Longevity: Hybrid ceramic construction offers lower friction, reduced heat generation, and superior resistance to wear compared to all-steel bearings. It is also pre-lubricated for immediate operation.

This bearing is ideally suited for high-performance applications requiring extreme precision and speed, including:

• Machine Tool Spindles: High-speed milling, grinding, and turning centers.
• Precision Spindles: PCB drilling and routing spindles.
• High-Frequency Motors: Spindles for CNC machinery.
• Aerospace & Defense Systems: Gyroscopes, radar systems, and other precision instruments.