KDA 3.2-050-3-AQD-W1 Bosch Rexroth Indramat
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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.
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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.
Frequently Asked Questions about KDA 3.2-050-3-AQD-W1:
Q: What type of cooling system is used in the KDA 3.2-050-3-AQD-W1 spindle drive?
A: The KDA 3.2-050-3-AQD-W1 spindle drive uses a mounted heatsink blower for cooling, utilizing forced airflow.
Q: What is the required DC supply voltage for the KDA 3.2-050-3-AQD-W1 spindle drive?
A: This drive operates with a DC supply voltage of 300 VDC.
Q: What is the rated current specification for the KDA 3.2-050-3-AQD-W1 spindle drive?
A: The rated current for this spindle drive is 50 A, enabling substantial power delivery.
Q: What type of interface is available for position command values on the KDA 3.2-050-3-AQD-W1?
A: It supports position command value inputs via a digital interface.
Q: What is the maximum installation elevation for the KDA 3.2-050-3-AQD-W1 spindle drive?
A: The KDA 3.2-050-3-AQD-W1 can be installed at elevations up to 1000 meters above sea level.
