KDA 2.1-150-3-DQD-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-DQD-U1 is a spindle drive that is part of the KDA Spindle Drives series. It features a rated current of 150 Amps and operates at a DC supply voltage of 300 VDC. The drive uses a mounted heatsink blower for forced cooling and supports digital position and speed command value interfaces.
Internal Product Review
The KDA 2.1-150-3-DQD-U1 from Bosch Rexroth Indramat is a spindle drive designed for demanding industrial environments, offering a 150 A rated current and a 300 VDC supply voltage. The integrated heatsink blower enables efficient forced cooling, while digital position and speed command interfaces ensure precise control. This model stands out for its high current capacity and reliable performance in continuous-duty 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 Bosch Rexroth Indramat KDA 2.1-150-3-DQD-U1 is a spindle drive in the KDA Spindle Drives series used to power and regulate high-speed machine-tool spindles in automated production lines. As a drive controller, it converts a fixed DC supply into a controlled three-phase output so numerical control systems maintain cutter or workpiece speed with minimal deviation. Integrating this unit simplifies cabinet wiring because the power electronics, control logic, and a dedicated heat sink blower are packaged in one chassis suited for closed-loop machining axes. This arrangement supports applications that require stable spindle behavior during cutting, drilling, and finishing operations.
The unit belongs to series 2 and operates from a regulated DC bus of 300 VDC. Its power stage is rated for a continuous motor phase current of 150 A, allowing it to drive large synchronous or induction spindle motors without exceeding temperature limits. Thermal management relies on a mounted heat sink blower that expels heat directly through the fin channels, and this assembly uses forced cooling so internal temperature rise remains predictable during long duty cycles. Spindle velocity is adjusted through a 16-bit parallel digital speed command, enabling fine command resolution for precise surface finishes on workpieces. The integrated power stage and cooling arrangement allow the drive to support sustained spindle demand in compact machine cabinets.
The heat sink fan draws its control power from a separate 115 V/50–60 Hz auxiliary line, isolating blower loading from the main DC link. Stable operation is specified within an ambient range of 5 to 45 °C, and performance data remain valid up to 1000 m above sea level. Alongside the speed channel, a digital position command value interface is available so the same drive can handle spindle orientation tasks such as tool-change alignment or thread cutting. The interface supports controlled spindle indexing when the application requires more than continuous speed regulation.
