KDA 2.1-100-3-AYI-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 2.1-100-3-AYI-U1 is a spindle drive from the KDA Spindle Drives series. It features a rated current of 100 A and operates with a DC supply voltage of 300 VDC. The drive utilizes forced cooling provided by a mounted heatsink blower with an AC source of 115V at 50-60Hz, and functions optimally within an ambient temperature range of 5 to 45 degrees Celsius.
Internal Product Review
The KDA 2.1-100-3-AYI-U1 spindle drive from Bosch Rexroth Indramat delivers reliable performance with a 100 A rated current and 300 VDC supply voltage. Forced cooling via a mounted heatsink blower and operation within 5 to 45 degrees Celsius ensure consistent thermal management. This model stands out for its incremental encoder output and analog speed command value, making it well-suited for demanding spindle applications.
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Product Description:
The KDA 2.1-100-3-AYI-U1 spindle drive is manufactured by Bosch Rexroth Indramat within the KDA Spindle Drives series. The device acts as a regulated inverter that powers machine-tool spindles, allowing the automation system to issue velocity or orientation commands while the drive handles current and torque regulation. By using encoder feedback, the unit keeps spindle speed consistent during cutting and quickly synchronizes rotational position for tapping, indexing, and tool-change sequences in industrial automation cells.
Electrical energy is supplied from a shared DC link held at 300 VDC, and the drive can deliver up to 100 A of continuous output current to the spindle motor windings. Thermal management relies on a mounted heat sink blower that expels waste heat directly from the rear plate, and the blower itself runs from an auxiliary line rated at 115 V/50–60 Hz. Because airflow is directed over the fins rather than relying on cabinet convection, the unit uses forced cooling to sustain full current when airflow is unobstructed. Speed information reaches the power electronics through encoder channels, and torque commands are produced accordingly.
The drive functions in ambient temperatures from 5 to 45 degrees Celsius and can operate at elevations up to 1000 m above sea level, which suits most shop-floor locations. For position verification, the control panel exposes an incremental encoder output, while a separate socket accepts a second encoder input with a synchronous-pulse line so multi-turn or spindle-orientation sensors can be connected without external splitters. Velocity references arrive as an analog signal, allowing simple gain scaling from CNC or PLC hardware that already provides ±10 V speed commands.
