KDA 3.1-150-3-A0D-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 3.1-150-3-A0D-W1 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. The drive includes a mounted heatsink blower for forced cooling and is suitable for ambient temperatures between 5 and 45 degrees Celsius.
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Product Description:
The KDA 3.1-150-3-A0D-W1 spindle drive is produced by Bosch Rexroth Indramat as part of the KDA Spindle Drives series. This unit modulates spindle speed and torque in computer-controlled machine tools, taking bus power from an Indramat supply module and delivering regulated three-phase output to the motor. By integrating the drive at the machine’s spindle axis, it supports precise electronic gearing between cutting tools and feed axes, which helps improve surface finish and cycle consistency during automated milling, drilling, or grinding operations.
The drive operates from a DC link rated at 300 VDC, and its power section can continuously supply up to 150 A to the spindle windings, allowing high acceleration even with heavy toolholders. Thermal energy created by this current is removed through a mounted heat-sink blower. The fan is part of a forced cooling circuit that keeps semiconductor junctions within safe limits. The blower itself is supplied by an independent 220 V, 50/60 Hz mains tap, so airflow is maintained regardless of DC bus status. Reliable operation is specified for ambient conditions from 5 to 45 °C, supporting stable performance on factory floors that are neither refrigerated nor exposed to excessive heat.
The enclosure may be installed at elevations up to 1000 m above sea level without derating, which matches typical plant altitudes. Command channels include a digital position command value, while spindle velocity is set through an analog reference, enabling compatibility with legacy CNC controllers. Version 3 hardware omits a second encoder socket, so additional feedback loops must be routed through the primary connector rather than an auxiliary port. This arrangement keeps the control interface straightforward while preserving the operating limits stated for the unit.
Frequently Asked Questions about KDA 3.1-150-3-A0D-W1:
Q: What power supply does the heatsink blower for the KDA 3.1-150-3-A0D-W1 require?
A: The KDA 3.1-150-3-A0D-W1 spindle drive is equipped with a heatsink blower that operates on a 220V AC supply at 50-60Hz.
Q: What is the rated current capacity of the KDA 3.1-150-3-A0D-W1 spindle drive?
A: This drive supports a rated current of 150 A, which allows it to handle high power spindle operations.
Q: How is the KDA 3.1-150-3-A0D-W1 spindle drive cooled?
A: Forced cooling is provided through a mounted heatsink blower on this spindle drive.
Q: What is the maximum installation elevation for the KDA 3.1-150-3-A0D-W1 spindle drive?
A: The KDA 3.1-150-3-A0D-W1 can be installed at elevations up to 1000 meters above sea level.
Q: What type of position command value interface does the KDA 3.1-150-3-A0D-W1 have?
A: This spindle drive features a digital position command value interface for precise control inputs.
