KDA 3.2-050-3-DYD-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 3.2-050-3-DYD-W1 is a spindle drive from the KDA Spindle Drives series. It features a rated current of 50 Amps and operates with a 300 VDC supply voltage. The unit uses a mounted heatsink blower for forced cooling and supports digital position command input as well as a second encoder and synchronous input.
Internal Product Review
The KDA 3.2-050-3-DYD-W1 spindle drive from Bosch Rexroth Indramat delivers reliable performance with a 50 A rated current and 300 VDC supply voltage, making it suitable for demanding spindle applications. Forced cooling via a mounted heatsink blower and a 220V AC source ensures stable operation across a 5 to 45°C ambient temperature range. Digital position and speed command interfaces contribute to precise control, making this drive a dependable solution for modern machining environments.
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Product Description:
The KDA 3.2-050-3-DYD-W1 spindle drive is produced by Bosch Rexroth Indramat within the KDA Spindle Drives series. It is in series 3 and version 2, matching third-generation supply modules used on Indramat multi-axis platforms. Designed for machine-tool spindles, the drive converts a fixed DC bus into variable three-phase output so high-speed cutting heads can follow programmed velocity profiles. A heatsink blower mounted on top of the housing supports cabinet installation where natural convection is inadequate.
The power stage is rated for 50 A of continuous output current, allowing the module to energize medium-frame spindle motors without derating. Its DC link must be supplied with 300 VDC, a level commonly provided by TVM or KVR supply units. The heatsink blower operates from an auxiliary line of 220 V/50–60 Hz, so it can be wired directly to standard control transformers. Reliable operation is specified between 5 to 45 °C, and installation is permitted up to 1000 m above sea level before additional cooling measures are needed. Forced airflow across the aluminum fins keeps semiconductor junctions below their thermal limits when the drive delivers full torque at low spindle speeds.
A digital position command interface accepts parallel reference words from numerical controls, while a separate 16-bit parallel speed command channel adjusts velocity in real time. The control board also provides a second encoder input that can be synchronized with external feedback for spindle orientation or tool-change positioning. Continuous forced cooling generated by the integral blower and directed through the ribbed heatsink maintains component temperatures during varying motor duty cycles. These control interfaces support accurate spindle regulation in enclosed CNC cabinets with limited ambient airflow.
