KDA 2.1-100-3-API-U1

The Bosch Rexroth Indramat KDA 2.1-100-3-API-U1 main spindle drive from the KDA Spindle Drives series by Bosch Rexroth Indramat delivers a tightly controlled spindle solution with exceptional stiffness and precise positioning. Its compact form factor integrates seamlessly into existing machine tool architectures, reducing cabinet footprint without sacrificing performance. Featuring a robust Design 1 housing and a modular Product KDA platform, this drive system ensures consistent mechanical rigidity under heavy dynamic loads. Native compatibility with standard interface protocols simplifies retrofits and new installations alike.

Engineered for continuous operation, the drive supports a Rated Current of 100 A and a DC Bus Voltage of 300 V, enabling broad speed ranges up to the spindle's mechanical limit. Thermal management is assured by a Cooling scheme with a dedicated AC Supply Source for Heatsink Blower at 115 VAC, maintaining optimal junction temperatures even during peak output. Dual feedback channels via Aux. Encoder Input for spindle or secondary motor provide high-resolution position data, while the Aux. Interface outputs incremental encoder signals for closed-loop control. Speed reference is handled through an analog Speed Command Value of +/- 10V, allowing smooth acceleration and deceleration profiles.

Reliability is built into every aspect of the KDA 2.1-100-3-API-U1: forced cooling by heatsink blower prevents thermal drift, and rugged power electronics tolerate harsh shop-floor environments. Tight integration with CNC controllers and induction motor spindles delivers consistent torque under fluctuating loads, making it ideal for milling, drilling, and grinding applications. Its modular design and industry-standard I/O ensure streamlined commissioning, simplified maintenance, and long service life.