KDA 3.3-150-3-API-U1

The Bosch Rexroth Indramat KDA 3.3-150-3-API-U1 from the KDA Spindle Drives series by Bosch Rexroth Indramat delivers precision spindle control with a Rated Current of 150 A and a DC Bus Voltage of 300 V for consistent torque and power density. It accepts an Analog +/- 10V Speed Command Value to fine-tune rotational velocity across a broad speed range, while the Cooling is handled by a dedicated Forced Cooled by Heatsink Blower unit. The drive’s auxiliary systems include an AC Supply Source for Heatsink Blower of 115 VAC and an Aux. Encoder Input with support for Spindle or Second Motor Feedback to ensure accurate position tracking. Complementary connectivity is provided through an Aux. Interface of Incremental Encoder Output for seamless integration with machine controls.

Engineered with a robust Design 3 architecture and classified under the Product KDA family, this spindle drive maintains stable operation under demanding machining cycles. The compact form factor simplifies panel layouts while high-performance electronics sustain continuous operation even under variable load. Overcurrent protection is inherently built around the 150 A rating, and the 300 V DC bus supports rapid current delivery for dynamic speed changes. This drive’s resilience is further enhanced by precision thermal management via the integrated heatsink blower system.

Ideal for high-speed milling, drilling, and grinding applications, the KDA 3.3-150-3-API-U1 streamlines commissioning through standardized interfaces and parameter sets. Its combination of stiffness, positioning accuracy, and wide speed range makes it a versatile solution for CNC spindles where durability and repeatable performance are critical.