KDA 2.1-150-3-D0I-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 2.1-150-3-D0I-U1 is part of the KDA Spindle Drives series and is a spindle drive with a rated current of 150 Amps. It uses a mounted heatsink blower for forced cooling and runs on a DC supply voltage of 300 VDC. The device features an incremental encoder output and supports digital speed command values with 16 bit parallel input.
Internal Product Review
The KDA 2.1-150-3-D0I-U1 spindle drive from Bosch Rexroth Indramat features a rated current of 150 A and a DC supply voltage of 300 VDC, making it suitable for demanding spindle motor applications. With forced cooling via a mounted heatsink blower and support for ambient temperatures up to 45°C, the drive ensures stable operation in industrial environments. The inclusion of an incremental encoder output highlights its flexibility for precise speed feedback.
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Product Description:
The KDA 2.1-150-3-D0I-U1 spindle drive is produced by Bosch Rexroth Indramat as part of the KDA Spindle Drives series. As a closed-loop servo inverter, the unit regulates high-speed spindle motors used in machining centers and other automated tooling stations by converting a constant DC bus into a variable three-phase output. It provides the motion bandwidth and current control needed for precise cutting, drilling, or grinding tasks where spindle speed must follow numeric controller commands. In machine tools, it is suited to applications where spindle speed must stay stable during changes in cutting load.
This drive operates from a constant DC bus of 300 VDC, and its power stage is rated to deliver up to 150 A of continuous output current to the motor, making it suitable for high-torque spindles. A 16-bit parallel digital interface accepts the speed reference, allowing direct connection to CNC controllers without analog conversion. Heat generated by the power electronics is removed through a mounted heat sink blower, and the blower itself is powered by 115 V/50-60 Hz. Forced cooling keeps the internal components within their thermal limits during continuous spindle operation. The unit does not include a second encoder input, so it relies on the primary feedback channel.
The permitted ambient operating window is 5 to 45 °C, and cooling performance is maintained up to 1000 m above sea level without capacity loss. The drive is Series 2. For external monitoring, an auxiliary connector provides an incremental encoder output so other devices can track actual spindle velocity in real time. This signal can be routed to a control system or diagnostic device that requires feedback from the spindle. Operation outside the stated temperature or altitude range can reduce cooling effectiveness and available output.
