KDA 3.3-050-3-LQD-U1

The Bosch Rexroth Indramat KDA 3.3-050-3-LQD-U1 from the KDA Spindle Drives series by Bosch Rexroth Indramat delivers precision spindle control with a rated current of 50 A and a robust DC Bus Voltage of 300 V. This Design 3 Product KDA unit incorporates a Series 3 architecture optimized for high stiffness and dynamic positioning in demanding machining applications. The drive accepts a Speed Command Value via SERCOS - Interface and features a digital Aux. Interface with 16-Bit Parallel Position Command Value for seamless integration into modern CNC systems. With its compact footprint and advanced control algorithms, the KDA 3.3-050-3-LQD-U1 is engineered for reliable, high-performance spindle operation.

Engineered for sustained thermal management, the drive is Forced Cooled by Heatsink Blower, drawing power for its cooling circuit from a dedicated AC Supply Source for Heatsink Blower of 115 VAC. An Aux. Encoder Input for 1 V Sinusoidal Enc. supports high-resolution feedback loops, ensuring precise speed and torque regulation even under fluctuating loads. Internal diagnostics monitor drive health and motor performance, leveraging the integrated SERCOS interface to deliver real-time command and status data with minimal latency. The combination of digital parallel interfaces and sinusoidal encoder support streamlines commissioning and enhances closed-loop stability across the full speed range.

Designed for integration into high-end machining centers and automated spindle systems, the KDA main spindle drive excels in applications demanding rapid acceleration, frequent direction changes, and sustained torque delivery. Its forced-air cooling arrangement and rugged mechanical design guarantee consistent operation in harsh industrial environments. When paired with compatible Rexroth controllers, this drive reduces setup time and facilitates advanced spindle functions such as adaptive feed control and automatic tool change synchronization.