KDA 3.2-100-3-DPD-W1 Bosch Rexroth Indramat
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MPN: R911237247
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The Bosch Rexroth Indramat KDA 3.2-100-3-DPD-W1 is a spindle drive from the KDA Spindle Drives series, featuring a rated current of 100 Amps and a DC supply voltage of 300 Volts. It utilizes a mounted heatsink blower for forced cooling and supports a 220V AC source for the blower. The drive provides digital position and speed command interfaces as well as a second encoder input for spindle or additional motor feedback.
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Product Description:
The KDA 3.2-100-3-DPD-W1 spindle drive is manufactured by Bosch Rexroth Indramat and belongs to the KDA Spindle Drives series. As a numerically controlled spindle amplifier, it supplies regulated power to high-speed machining spindles and interfaces with CNC controllers used in milling centers, drilling machines, and other automated production equipment. The drive’s Series 3, version 2 hardware supports digital command channels so that rotational speed and position can be coordinated precisely with tool paths or auxiliary axes. It can support machining processes where spindle behavior must stay synchronized with programmed motion.
The internal power stage is energized from a DC bus at 300 VDC, and the power section can deliver a continuous output of 100 A to the connected spindle motor. Speed reference data are accepted as a digital 16-bit parallel word, allowing fine-resolution adjustments without analog drift. Safe operation is limited to an ambient range of 5 to 45 °C, and installation height must not exceed 1000 m above sea level. The digital command format helps the control system send repeatable setpoints during contouring, tapping, and speed-regulated cutting cycles.
Thermal management is handled by a mounted heatsink blower that forces air through the cooling channels. The fan is powered from an auxiliary line rated at 220 V / 50-60 Hz. This arrangement uses forced cooling, so heat generated by rapid acceleration currents is removed without relying on cabinet airflow alone. Digital command capability is extended through an additional interface for a digital position command value, while a second encoder input lets the controller process spindle or auxiliary feedback at the same time. Separate command and feedback paths support closed-loop spindle control when external measurement devices are connected.
