KDA 3.2-100-3-AQS-U1 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 3.2-100-3-AQS-U1 is a spindle drive from the KDA Spindle Drives series. It features a rated current of 100 Amps and operates with a 300 VDC supply voltage. The drive uses forced cooling with a mounted heatsink blower and supports RS 232 C serial interface.
Internal Product Review
The KDA 3.2-100-3-AQS-U1 spindle drive from Bosch Rexroth Indramat features a rated current of 100 A and an integrated forced cooling system with a mounted heatsink blower, ensuring effective thermal management during demanding operations. This unit supports a 300 VDC supply voltage and includes a serial interface (RS 232 C) for enhanced connectivity. The combination of high current capability and reliable cooling makes it a strong option for industrial spindle applications.
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Product Description:
The KDA 3.2-100-3-AQS-U1 belongs to the KDA Spindle Drives series manufactured by Bosch Rexroth Indramat. As a spindle drive, it converts regulated DC bus power into controlled three-phase output for high-speed machine tool spindles, allowing precise torque and speed regulation during milling, drilling, or grinding. The unit’s third-generation hardware, identified by series index 3 and version 2, integrates a heatsink blower and closed-loop current control so it can maintain continuous performance on production lines that demand tight speed tracking and quick acceleration.
The drive handles a rated motor current of 100 A and is supplied from a stabilized DC link of 300 VDC. Thermal energy is removed through a mounted heatsink blower, and airflow is directed across the power module by the drive’s forced cooling channel. The blower is energized from a separate utility feed of 115 V / 50–60 Hz, so cooling can remain active during coast-down or standby. Speed reference data are received as an analog voltage, and internal gain stages translate this command into pulse-width-modulated output for the spindle. Series code 3.2 identifies the drive version within the product line, and the unit is intended for modular multi-axis cabinet installations.
An auxiliary serial interface (RS-232C) permits parameter transfer and fault logging without opening the cabinet, and the analog speed command channel remains available for real-time velocity setpoints. Operation is permitted from 5 to 45 °C, enabling installation in climate-controlled machining halls without additional heaters. The design tolerates mounting heights up to 1000 m above sea level before derating becomes necessary, which suits most factory elevations. This arrangement allows service access without interrupting normal machine operation.
