KDA 3.1-150-3-D0S-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 3.1-150-3-D0S-U1 is a spindle drive from the KDA Spindle Drives series. It features a rated current of 150 Amps and operates with a DC supply voltage of 300 VDC. Forced cooling is achieved by a mounted heatsink blower powered by a 115V AC source, and it supports a digital 16 bit parallel speed command value.
Internal Product Review
The KDA 3.1-150-3-D0S-U1 spindle drive from Bosch Rexroth Indramat features a rated current of 150 A and operates with a 300 VDC supply voltage, making it well-suited for demanding spindle control tasks. Forced cooling with a mounted heatsink blower ensures stable operation within ambient temperatures from 5 to 45°C. The inclusion of a serial RS 232 C interface facilitates integration, making this drive a strong choice for high-performance spindle applications.
Have a part to sell?
Wake Industrial Warranty
To contact sales for pricing and lead time:
Payment Methods
Shipping Methods
Our Credentials
Product Description:
The KDA 3.1-150-3-D0S-U1 belongs to the KDA Spindle Drives series manufactured by Bosch Rexroth Indramat. Designed for CNC and automated machining centers, this spindle drive converts common DC-bus power from the cabinet supply into controlled three-phase output for high-speed motor operation. Within an automation cell, it closes the speed control loop so the control system can command acceleration, deceleration, and constant surface speed on the workpiece spindle. This allows the spindle to follow programmed speed changes during drilling, milling, and turning operations. The drive’s integrated heat sink blower and dedicated logic interfaces support continuous duty in production environments.
It draws its power from a regulated DC link of 300 VDC and can deliver a continuous motor phase current of 150 A. The heat sink blower is powered separately by an auxiliary supply of 115 V/50-60 Hz, so the thermal management circuit can remain active even when the main DC bus is off. Airflow is provided by a mounted heat sink blower that pushes air directly across the power modules and keeps semiconductor junction temperatures within limits. A RS-232C serial interface is available for parameter upload, diagnostics, and service access, while a second encoder port is omitted to simplify spindle-axis wiring.
The unit can operate from 5 to 45 °C and at elevations up to 1000 m above sea level without derating. Cooling air moves through the unit by forced cooling and depends on unobstructed cabinet ventilation paths. Proper ventilation is required so heated air can leave the cabinet without recirculating through the drive. Speed commands arrive from the host controller as a 16-bit parallel digital word, giving the numerical resolution needed for precise RPM control during tapping, contour milling, or grinding. Series revision 3 circuitry supervises current, voltage, and thermal sensors during operation.
