KDA 3.1-100-3-AQ0-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 3.1-100-3-AQ0-W1 is a spindle drive from the KDA Spindle Drives series and operates with a rated current of 100 Amps. It uses a forced cooling system provided by a mounted heatsink blower with an AC source of 220V at 50-60Hz. The drive supports a DC supply voltage of 300 VDC and is designed for installations up to 1000 meters above sea level in ambient temperatures between 5 and 45 degrees Celsius.
Internal Product Review
The KDA 3.1-100-3-AQ0-W1 spindle drive from Bosch Rexroth Indramat features a rated current of 100 A and operates with a DC supply voltage of 300 VDC, making it suitable for demanding spindle applications. Its forced cooling system with a mounted heatsink blower ensures consistent performance within the 5 to 45 degrees Celsius temperature range. The design delivers reliable operation and highlights efficient thermal management.
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Product Description:
The KDA 3.1-100-3-AQ0-W1 spindle drive is produced by Bosch Rexroth Indramat as part of the KDA Spindle Drives series. It is intended to regulate the torque and speed of high-frequency machine-tool spindles by converting a constant DC bus into three-phase output that follows a velocity reference. In automated machining centers, the unit forms the link between the main supply module and the feedback-equipped motor, providing closed-loop control that supports rapid acceleration, controlled braking, and precise surface finishes.
Internally, the drive is powered from a DC link of 300 VDC, allowing its transistor bridge to deliver a continuous phase current of 100 A to the connected spindle motor. Thermal stress from this output is removed by a mounted heat sink blower; the blower is fed from an auxiliary supply of 220 V/50–60 Hz. Airflow is directed through fins in a forced cooling mode, so the device can sustain rated current even when mounted in tight electrical enclosures. Velocity control is executed from an external control system that provides an analog speed command voltage. With this interface, the spindle drive modulates the inverter switching pattern proportionally to the reference, enabling smooth ramp profiles and compatibility with standard numerical control cards. The series identifier 3 indicates the drive revision used in this hardware release.
The drive is intended for shop-floor installation. Reliable operation is specified from 5 to 45 °C, and performance remains unchanged at elevations up to 1000 m above sea level because the cooling system maintains airflow density within this range. There is no additional interface option, which simplifies cabinet layout by reducing unused connectors and limits control functions to the core motion tasks. Operation outside the stated thermal or altitude limits requires derating or supplementary ventilation to preserve component life and maintain current-handling capability.
