KDA 3.1-100-3-LQ0-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-LQ0-U1 is a spindle drive from the KDA Spindle Drives series with a rated current of 100 Amps and a DC supply voltage of 300 Volts. It uses forced cooling through a mounted heatsink blower and is designed for operation between 5 and 45 degrees Celsius ambient temperature. The drive supports speed command via SERCOS interface and is intended for installation up to 1000 meters above sea level.
Internal Product Review
The KDA 3.1-100-3-LQ0-U1 spindle drive from Bosch Rexroth Indramat features a 100 A rated current and utilizes a mounted heatsink blower for effective forced cooling. With a 300 VDC supply voltage and SERCOS interface for speed command, this drive ensures precise and stable spindle control in demanding environments. The unit is well-suited for high-performance applications where reliable cooling and consistent current delivery are key.
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Product Description:
The KDA 3.1-100-3-LQ0-U1 is a spindle drive manufactured by Bosch Rexroth Indramat and supplied within the KDA Spindle Drives series. Designed for closed-loop regulation of high-speed machine-tool spindles, the unit converts a fixed DC link into the variable three-phase power required for precision cutting or grinding heads. By coordinating torque, velocity, and position commands with the motion controller, the drive serves as an integral part of automated production lines that rely on accurate spindle-speed profiles. This arrangement supports stable spindle control during machining processes where load conditions can change quickly.
The KDA 3.1 design is powered from a DC bus of 300 VDC, and it can deliver a continuous motor phase current of 100 A. This electrical capacity supports the spindle power range and the matching inverter size. Thermal management is handled by a mounted heat-sink blower operating with forced cooling, so internal semiconductors remain within safe limits even during high cycle rates. That blower is fed by an auxiliary source rated at 115 V/50-60 Hz, which lets the cooling circuit operate independently of the main DC link. The drive is intended for ambient temperatures from 5 to 45 degrees Celsius, helping the control electronics maintain accuracy under typical shop-floor conditions.
The drive retains full current output up to 1000 m above sea level, which supports use in elevated facilities without reducing rated performance. Velocity references arrive through the SERCOS interface, so the unit synchronizes with the control system over a fiber-optic ring without analog trimming. Because the hardware includes no additional interface option, all control and diagnostic access is handled through the base SERCOS channel. The parameters are organized to match the series 3 architecture used throughout the current KDA platform.
