KDA 3.3-050-3-LQI-U1

KDA 3.3-050-3-LQI-U1, manufactured by Bosch Rexroth Indramat, belongs to the robust KDA Spindle Drives series. This main spindle drive delivers high stiffness and precision positioning across an extensive speed range while maintaining continuous power output. It features a compact 3-design housing optimized for machine tool integration and a dedicated product architecture titled Product KDA. The drive’s architecture ensures seamless pairing with advanced CNC controls for next-generation machining centers.

Equipped with a Rated Current of 50 A and a DC Bus Voltage of 300 V, the unit sustains heavy-duty spindle loads under demanding conditions. Cooling is handled via a Forced Cooled by Heatsink Blower system powered by an AC Supply Source for Heatsink Blower of 115 VAC, ensuring constant thermal management. The drive communicates speed setpoints over a Speed Command Value channel using the SERCOS - Interface protocol while providing feedback through an Aux. Interface for incremental encoder output and an Aux. Encoder Input for 1 V sinusoidal signals. This combination of power, interface flexibility, and cooling resilience maintains performance stability in high-cycle applications.

Integration is streamlined by the drive’s compact form factor and standardized Series 3 mounting, simplifying retrofits and new installations. Its forced-air cooling and rugged design enhance reliability in abrasive manufacturing environments, reducing maintenance intervals. Ideal for high-precision spindles in milling, drilling, and grinding centers, the KDA 3.3-050-3-LQI-U1 drive offers consistent torque delivery and uptime for continuous production operations.