KDA 3.1-050-3-A00-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 3.1-050-3-A00-U1 is a spindle drive from the KDA Spindle Drives series with a rated current of 50 Amps and a DC supply voltage of 300 Volts. It features forced cooling with a mounted heatsink blower operating at 115V and can function within an ambient temperature range of 5 to 45 degrees Celsius.
Internal Product Review
The KDA 3.1-050-3-A00-U1 spindle drive from Bosch Rexroth Indramat features a mounted heatsink blower with forced cooling and operates efficiently on a 115V/50-60Hz AC source. With a rated current of 50 A and a 300 VDC supply voltage, this drive delivers stable and consistent performance in demanding spindle applications. Its design supports reliable operation up to 1000 meters above sea level, making it an excellent choice for versatile industrial environments.
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Product Description:
The Bosch Rexroth Indramat KDA 3.1-050-3-A00-U1 belongs to the KDA Spindle Drives series. As a spindle drive, it supplies controlled three-phase power to high-speed machining spindles and allows a CNC controller to command rotational speed with feedback. Within an automation cell, the unit bridges the DC power supply and the motor, regulating current to match changing cutting load and protecting the machine tool from overcurrent and thermal drift. That control behavior helps the spindle maintain steady speed as tool engagement changes during drilling, milling, and other variable-load processes.
The version 3 drive draws its intermediate circuit from a 300 VDC supply, which stabilizes inverter operation and limits line-side harmonics. Under continuous load, the power section can deliver 50 A, giving the spindle enough current for rapid acceleration and sustained cutting duty. Thermal energy is removed by a heat sink-mounted blower, and airflow is enhanced through forced cooling to help prevent semiconductor derating during long machining cycles. The blower is powered by an auxiliary 115 V/50–60 Hz source, so the cooling system can be wired separately from the main DC link.
The control section interprets the speed reference as analog, allowing conventional ±10 V commands from a motion controller instead of digital fieldbus traffic. Reliable operation is specified between 5 to 45 °C, and installation is permitted up to 1000 m above sea level before additional derating is required. Communication hardware is kept simple because the model has no additional interface option and does not include a second encoder input. This arrangement suits legacy machining centers that use straightforward analog control and compact wiring, and it reduces the number of external connections needed in the control cabinet.
