KDA 3.1-050-3-LQI-U1

The Bosch Rexroth Indramat KDA 3.1-050-3-LQI-U1 from the KDA Spindle Drives series delivers precision spindle control with a Rated Current of 50 A and a DC Bus Voltage of 300 V engineered for demanding machining applications. This Product KDA is built to Design 1 specifications and belongs to Series 3, ensuring consistency across installations. It employs a Speed Command Value via SERCOS – Interface for high-resolution speed regulation and offers an Aux. Encoder Input for 1 V Sinusoidal Enc. for closed-loop feedback. Integration is streamlined through an Aux. Interface with Incremental Encoder Output and a dedicated AC Supply Source for Heatsink Blower at 115 VAC.

The drive’s thermal management leverages Cooling Forced Cooled by Heatsink Blower to maintain stable junction temperatures under continuous load, preventing thermal derating at high speeds. Its robust digital control platform provides sub-micrometer positioning accuracy and fast torque response, accommodating rapid acceleration profiles and minimizing settling time. High stiffness in the drive loop ensures torsional rigidity on the spindle, reducing chatter and improving surface finish on complex contouring tasks. Certified interfaces and hardened electronics deliver EMI immunity and consistent performance across broad ambient conditions.

Designed for CNC milling, grinding, and turning centers, the KDA 3.1-050-3-LQI-U1 spindle drive supports multi-axis synchronization and automated tool changes with minimal setup. Its modular architecture simplifies maintenance, with plug-and-play encoder and blower connections reducing downtime. Backed by Bosch Rexroth Indramat’s global support network, this spindle drive offers a future-proof solution for high-precision manufacturing environments.