KDA 3.1-100-3-DYS-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 3.1-100-3-DYS-U1 is a spindle drive from the KDA Spindle Drives series and features a rated current of 100 Amps with a DC supply voltage of 300 VDC. The drive uses a mounted heatsink blower for forced cooling, and is equipped with a serial interface RS-232 C and a second encoder input. It operates within an ambient temperature range of 5 to 45 degrees Celsius and is suitable for installation up to 1000 meters above sea level.
Internal Product Review
The KDA 3.1-100-3-DYS-U1 spindle drive from Bosch Rexroth Indramat delivers a reliable 100 A rated current and operates with a stable 300 VDC supply voltage, making it suitable for demanding spindle applications. Forced cooling through a mounted heatsink blower ensures efficient thermal management, while the integrated serial interface (RS 232 C) allows for flexible connectivity. This model stands out for its high current capacity and adaptable communication options.
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 KDA 3.1-100-3-DYS-U1 is a spindle drive manufactured by Bosch Rexroth Indramat for the KDA Spindle Drives series. It is intended for high-speed machine-tool spindles, where the controller adjusts current and speed so the motor can respond to changing cutting, drilling, or grinding loads during automated production. The drive also supports closed-loop spindle operation in systems that need stable velocity control, quick acceleration, and coordinated interaction with CNC commands. This makes it suitable for machining centers that need repeatable spindle behavior during tool engagement, speed changes, and synchronized production steps. The controller is designed to work as part of an integrated drive system rather than as a standalone motor starter.
This unit delivers a rated output of 100 A, giving the power section the current capacity needed for rapid spindle acceleration and stable torque under changing process demand. Its intermediate circuit is supplied from a DC link of 300 VDC, so the upstream supply module must maintain that bus level during operation. Cooling hardware uses a heatsink blower powered from 115 V/50–60 Hz, and the unit uses forced cooling to move ambient air directly across the fins and remove switching losses from the power electronics. Speed commands are received as a 16-bit digital parallel word, which gives the controller fine command resolution when the CNC issues small setpoint changes.
The drive can operate in ambient temperatures from 5 to 45 °C and at installation heights up to 1000 m above sea level, which suits enclosed industrial cabinets in standard plant conditions. At greater heights, reduced air density lowers heat removal and may require output derating. An integrated mounted heatsink blower supports continuous thermal control, while a second encoder input and a synchronous input allow the spindle to track a master position or speed signal in multi-axis equipment. An RS-232-C port is available for parameter transfer, and the unit is identified as series 3.
