KDA 3.1-100-3-LY0-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 3.1-100-3-LY0-W1 is a spindle drive from the KDA Spindle Drives series, featuring a rated current of 100 Amps and a supply voltage of 300 VDC. It uses forced cooling via a mounted heatsink blower with a 220V AC source and accepts speed command values via SERCOS interface. The drive is designed for operation in ambient temperatures from 5 to 45 degrees Celsius and up to 1000 meters above sea level.
Internal Product Review
The KDA 3.1-100-3-LY0-W1 spindle drive from Bosch Rexroth Indramat is designed for demanding industrial environments, offering a rated current of 100 A and a 300 VDC supply voltage. Forced cooling with a mounted heatsink blower ensures stable thermal management under continuous operation. This model stands out for reliable spindle control and efficient heat dissipation.
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Product Description:
Bosch Rexroth Indramat manufactures the KDA 3.1-100-3-LY0-W1 in the KDA Spindle Drives series. The unit controls the torque and speed of machine-tool spindles, linking CNC commands to the motor through digital channels. It supplies regulated three-phase power while monitoring feedback so cutting, drilling, and grinding processes maintain constant surface speed. Its modular housing fits mid-range machining centers and lathes, and the slide-in format allows installation in Indramat power racks without special mounting hardware. Closed-loop operation also helps the spindle respond quickly to changing load during acceleration, deceleration, and tool contact.
The drive accepts 300 VDC from the common supply bus. During continuous duty, it can deliver 100 A of armature current, allowing the spindle motor to produce substantial cutting power. Heat is removed by forced cooling; an integral fan moves air across the heat sink and is powered from a separate 220 V at 50/60 Hz circuit so ventilation can remain active when the DC bus is off. Separate fan power also helps remove stored heat after a heavy run. Speed references come through the SERCOS interface, providing deterministic communication between the axis and the numerical control. The unit is release 3, which places it in the later version of this drive design.
For reliable service, the drive must operate between 5 to 45 °C and below 1000 m above sea level; beyond these limits, output is derated. The mounted heat sink blower exhausts rearward, so the enclosure needs a clear outlet path to prevent hot air from recirculating around the module. The unit also includes a second encoder input and a synchronous input for external position feedback, supporting spindle orientation during tool changes and other functions that require a controlled stop angle. These inputs allow the control to track spindle position more precisely when the application calls for alignment with mechanical tooling.
