KDA 2.1-150-3-A0D-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-A0D-W1 is a spindle drive from the KDA Spindle Drives series with a rated current of 150 Amps and a DC supply voltage of 300 Volts. It uses forced cooling with a mounted heatsink blower, which operates on a 220V AC source at 50-60Hz. Suitable for operation in ambient temperatures from 5 to 45 degrees Celsius and at installation elevations up to 1000 meters above sea level, it features digital position command value and analog speed command input interfaces.
Internal Product Review
The KDA 2.1-150-3-A0D-W1 spindle drive from Bosch Rexroth Indramat features a rated current of 150 A and utilizes a forced cooling system with a mounted heatsink blower, making it well-suited for high-demand spindle applications. Its digital position command interface and 300 VDC supply voltage support precise and consistent drive control. This model is an excellent choice for environments requiring reliable spindle performance and efficient thermal management.
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Product Description:
The KDA 2.1-150-3-A0D-W1 is produced by Bosch Rexroth Indramat for the KDA Spindle Drives series. As a dedicated spindle drive, it converts a regulated DC link into three-phase power for high-speed machine-tool spindles. It also manages thermal load so the spindle can accelerate, decelerate, and hold speed accurately during cutting cycles in automated cells and machining centers.
This unit is fed from a DC bus at 300 VDC, and the power section can deliver up to 150 A of continuous current to the motor windings, which matches medium-to-large spindle ratings. A separate blower mounted on the heat sink runs from a 220 V/50-60 Hz single-phase supply, and the combination of a heat sink-mounted blower with forced cooling keeps internal semiconductor temperatures within safe operating limits during sustained load. Reliable operation is specified from 5 °C to 45 °C, so enclosure airflow must keep the drive within that temperature range even when the surrounding plant is warm. The drive accepts an analog speed command, while dedicated logic circuits monitor current, temperature, and bus voltage before enabling gate signals to the inverter stage.
Installation altitude is limited to 1000 m above sea level, which helps maintain enough air density for effective cooling performance. For axis coordination, a separate channel carries the spindle position reference as a digital position command value, allowing CNC controllers to orient the shaft for tool changes or threading functions. Speed setpoints arrive through an analog input, which supports retrofit use in legacy control architectures. Because a second encoder socket is not present, external feedback devices must be wired directly to the master controller, which reduces wiring at the drive but requires careful routing in multi-turn applications.
