71910 CE/HCP4ADT

• 71910: Basic series designation, indicating a high-precision, light-series angular contact bearing with a 50 mm bore.
• C: Denotes a 15° contact angle, optimized for high-speed performance.
• E: Indicates optimized internal geometry and ring design for enhanced performance.
• HC: Specifies the use of Hybrid Ceramic balls (Silicon Nitride).
• P4A: Identifies the tolerance class, corresponding to ABEC 7/ISO P4 precision levels with additional running accuracy requirements.
• DT: Signifies a Duplex Tandem preloaded pair, where two bearings are mounted to share axial load in the same direction.

Hybrid Ceramic Construction: The combination of steel rings and ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and extends bearing life, especially at ultra-high speeds.

Phenolic Resin Cage: The lightweight and robust phenolic cage ensures stable operation and excellent guidance at high rotational speeds, contributing to the bearing's high limiting speed of 46,000 rpm.

Duplex Tandem Preload: The factory-set preload in the tandem arrangement provides maximum axial stiffness and precise rotational accuracy, eliminating axial play for superior positioning performance.

Super-Precision Tolerances: Conforming to P4A tolerance class, this bearing guarantees minimal runout and vibration, which is critical for applications requiring high rotational accuracy.

This bearing is specifically designed for high-tech machinery where speed, precision, and rigidity are paramount. Key applications include:

• Machine Tool Spindles: High-speed milling, grinding, and turning centers.
• Precision Spindles for PCB drilling and routing.
• High-Frequency Motors and turbine equipment.
• Medical Equipment such as dental handpieces and surgical tools.
• Aerospace auxiliary systems and instrumentation.