Product Description:

The KDA 3.2-100-3-A00-W1/S001 spindle drive is built by Bosch Rexroth Indramat as part of the KDA Spindle Drives series. Positioned between the DC link and the motor, it delivers controlled three-phase output to machine-tool spindles, allowing CNC controllers to impose precise torque and surface-speed setpoints during drilling, milling, or grinding operations in automated production lines.

Its power stage draws from a regulated bus of 300 VDC, so component sizing inside the cabinet can match the common K-series supply modules. Continuous current capability of 100 A enables the drive to accelerate large-diameter spindles without exceeding thermal limits. Heat generated by these currents is removed through Forced Cooling, and the internal control board triggers a mounted fan that receives 220 V 50–60 Hz from an auxiliary terminal. A proportional-integral regulator processes a analogue command voltage supplied by the numerical control to establish motor velocity; this arrangement simplifies retrofit work because it does not require fieldbus hardware. There are no additional communication interfaces and the second-encoder socket is intentionally omitted, keeping wiring straightforward for single-encoder spindle motor feedback.

Environmental operating limits finalize the installation envelope. The drive maintains specified performance between 5 to 45 °C, so enclosure air conditioning is only needed in hotter workshops. Altitude is capped at 1000 m above sea level, which keeps internal dielectric spacing sufficient for corona suppression. A Mounted Heatsink Blower fixed to the rear panel directs airflow across the IGBT modules, letting the forced-cooling circuit discharge heat independent of cabinet ventilation. Hardware identification places the unit in series 3, Version 2, making it electrically interchangeable with other 3.x KDA units while sharing the same analogue command philosophy and absence of auxiliary interfaces.