KDA 2.1-150-3-LQI-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 2.1-150-3-LQI-W1 is part of the KDA Spindle Drives series and is classified as a spindle drive. It features a rated current of 150 Amps and operates with a 300 VDC supply voltage. The unit uses a mounted heatsink blower with forced cooling and supports a maximum installation elevation of 1000 meters above sea level.
Internal Product Review
The KDA 2.1-150-3-LQI-W1 is a spindle drive from Bosch Rexroth Indramat designed for demanding industrial environments, featuring a 150 A rated current and SERCOS interface for precise speed command. Integrated forced cooling with a mounted heatsink blower ensures stable performance across a 5 to 45°C ambient temperature range. This spindle drive is a reliable solution for high-power applications requiring consistent thermal management.
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Product Description:
The KDA 2.1-150-3-LQI-W1 spindle drive is produced by Bosch Rexroth Indramat and belongs to the KDA Spindle Drives series. Designed for high-power machining centers and other CNC equipment, it converts the regulated DC bus from an Indramat supply module into adjustable three-phase output for a spindle motor. By coordinating speed and torque, the unit supports metal-cutting or grinding operations where precise spindle regulation affects surface finish and cycle time. Its closed-loop design pairs with Indramat servo controllers so spindle speed follows programmed setpoints down to zero without cogging.
The drive’s power path is sized for a continuous armature current of 150 A, allowing it to energize large asynchronous or synchronous spindle motors. It draws energy from a common DC link at 300 VDC, so it must be used with compatible supply units rather than line-connected rectifiers. Thermal management relies on forced cooling, and the internal controller energizes a heat sink blower fed from 220 V/50-60 Hz to maintain semiconductor junction temperatures. Speed references arrive digitally through the SERCOS interface, and the version 2 platform expands parameter memory for large tool-change or positioning tables.
The unit operates in rooms kept between 5 to 45 °C, and elevation must not exceed 1000 m above sea level to avoid derating. For tacholess applications, an incremental encoder output passes real-time spindle position to the CNC, eliminating auxiliary converters. The blower is attached to the finned body as a mounted heat sink blower, which channels air directly across the IGBT stack and keeps acoustic noise localized to the drive enclosure. Wake Industrial offers a one-year warranty on this KDA product. International shipping options can be arranged for this product.
