KDA 3.2-150-3-DP0-U1 Bosch Rexroth Indramat
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MPN: R911235916
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The Bosch Rexroth Indramat KDA 3.2-150-3-DP0-U1 is a spindle drive from the KDA Spindle Drives series, with a rated current of 150 Amps and a DC supply voltage of 300 VDC. It uses a mounted heatsink blower for forced cooling and has a digital 16-bit parallel speed command value. The unit operates within an ambient temperature range of 5 to 45 degrees Celsius and supports installation up to 1000 meters above sea level.
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Product Description:
The KDA 3.2-150-3-DP0-U1 spindle drive is produced by Bosch Rexroth Indramat as part of the KDA Spindle Drives series. Within an automated machining cell, this drive controls spindle torque and velocity, forming the link between a DC bus converter and the feedback devices mounted on the motor shaft. Its digital control architecture allows tight speed regulation that is synchronized with CNC or PLC commands, providing the precision required in industrial metal-cutting and grinding operations. By regulating spindle speed in real time, it helps maintain stable cutting conditions as load changes during drilling, milling, or grinding.
The drive is powered from a 300 VDC intermediate circuit and can deliver up to 150 A of continuous output current to the spindle motor. Speed references arrive through a 16-bit parallel digital interface, so controller resolution matches fine machining tolerances. Thermal energy from the power stage is removed by a mounted heat sink blower, and that fan is supplied from an auxiliary 115 V/50-60 Hz line rather than from the DC bus. This arrangement supports sustained current during extended cutting cycles and also provides headroom for the dynamic acceleration phases used during tool changes.
For reliable service in production halls, the drive is specified for ambient temperatures from 5 to 45 °C, and installation heights can reach 1000 m above sea level without performance loss. Its overall thermal concept uses forced cooling, meaning enclosure air is continually exchanged by the integral blower rather than by passive convection. A dedicated second encoder input for spindle feedback or additional motor feedback permits direct comparison between motor-mounted and machine-mounted sensing, which improves positional accuracy on multi-axis setups. These operating limits suit typical production floors and allow the drive to be used in many enclosed machine cabinets without separate climate control.
