KDA 3.3-050-3-LQI-W1

The Bosch Rexroth Indramat KDA 3.3-050-3-LQI-W1 from the KDA Spindle Drives series by Bosch Rexroth Indramat offers a robust solution for high-precision spindle applications. This main spindle drive features a Rated Current of 50 A and a DC Bus Voltage of 300 V, delivering reliable continuous power across a wide speed range. Built on a Design 3 platform within the Product KDA family, it integrates advanced positioning features and high mechanical stiffness for demanding machining tasks. The compact form factor and industry-standard mounting dimensions simplify integration into existing drive cabinets.

Reliability and control are enhanced through multiple encoder interfaces and a standardized fieldbus command input. An Aux. Encoder Input for 1V Sinusoidal Enc. and an Aux. Interface with Incremental Encoder Output support precise feedback loops, while the Speed Command Value via SERCOS – Interface enables deterministic, low-latency communication. Thermal management is provided by a forced-cooled heatsink blower powered from a dedicated 220 VAC AC Supply Source for Heatsink Blower, ensuring optimal junction temperatures under continuous or cyclic loads. The robust construction and proven drive electronics minimize MTTR and support extended operation in industrial environments.

Commissioning is streamlined through a unified parameter set shared across the series and compatibility with standard drive toolchains. The combination of continuous current handling, comprehensive encoder support, and active cooling makes the KDA 3.3-050-3-LQI-W1 an ideal choice for high-speed spindles in milling, drilling, and grinding machines. Its balanced design promotes stable torque delivery and precise positioning, ensuring peak performance in modern CNC systems.