KDA 3.2-050-3-AQD-W1 Bosch Rexroth Indramat
Wake Industrial LLC is not an authorized distributor of this product.
Wake Industrial LLC is not an authorized distributor of this product.
The Bosch Rexroth Indramat KDA 3.2-050-3-AQD-W1 is a spindle drive from the KDA Spindle Drives series and has a rated current of 50 Amps. It features forced cooling with a mounted heatsink blower operating on a 220V AC source at 50-60Hz. The drive supports digital position command values and analog speed command values, with a DC supply voltage of 300 VDC.
Internal Product Review
The KDA 3.2-050-3-AQD-W1 spindle drive from Bosch Rexroth Indramat delivers consistent performance with a rated current of 50 A and operates on a reliable 300 VDC supply voltage. Forced cooling via a mounted heatsink blower enables stable operation within ambient temperatures from 5 to 45 degrees Celsius. The inclusion of digital position and analog speed command value interfaces makes this drive well-suited for high-precision spindle control applications.
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Product Description:
The KDA 3.2-050-3-AQD-W1 is a spindle drive developed by Bosch Rexroth Indramat within the KDA Spindle Drives series. It converts fixed DC bus power into regulated three-phase output for high-speed machine tool spindles, supporting closed-loop velocity and position control when paired with compatible motor feedback. Its control structure lets the drive regulate spindle behavior during acceleration, constant-speed cutting, and controlled stopping. This operating mode suits machining centers, lathes, and other equipment that must hold spindle speed accurately during changing load conditions. Because it occupies a single rack slot and uses an onboard heatsink blower, the unit fits compact control cabinets without requiring a separate cooling assembly.
A dedicated DC bus of 300 VDC feeds the inverter section, and the drive is rated for continuous motor phase current of 50 A. Thermal management uses forced cooling, and the control section powers the blower from 220 V/50-60 Hz to move air across the heatsink. This airflow removes heat from the power semiconductors during sustained spindle operation and rapid speed changes. The electronics remain operational at ambient temperatures from 5 to 45 °C, allowing installation in normal production areas when cabinet airflow is maintained. The unit is Series 3 and Version 2.
Installation is permitted up to 1000 m above sea level, and higher elevations require current derating. The cooling path is built around a mounted heatsink blower, so the airflow module is already attached to the power stage. For command processing, the velocity loop accepts an analog reference, while a separate input handles a digital position command value for orientation tasks such as threading and spindle indexing. This arrangement supports CNC systems that need continuous speed control in one operating mode and precise angular positioning in another. The separate command channels also allow the spindle to switch between speed-regulated running and commanded position moves without additional interface hardware.
