KDA 3.2-050-3-LPI-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 3.2-050-3-LPI-U1 is a spindle drive from the KDA Spindle Drives series, featuring a rated current of 50 Amps and a 300 VDC supply voltage. It includes a mounted heatsink blower for forced cooling and supports an ambient temperature range of 5 to 45 degrees Celsius. The drive provides a SERCOS interface for speed command values and additional interfaces such as an incremental encoder output.
Internal Product Review
The KDA 3.2-050-3-LPI-U1 spindle drive from Bosch Rexroth Indramat features forced cooling via a mounted heatsink blower, ensuring optimal thermal performance in demanding environments. Designed for precision, it supports a rated current of 50 A and provides an incremental encoder output for reliable spindle feedback. This model stands out for its integration flexibility and efficiency in high-performance spindle applications.
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Product Description:
The KDA 3.2-050-3-LPI-U1 spindle drive is built by Bosch Rexroth Indramat for the KDA Spindle Drives series. It operates as the axis-specific inverter section in a modular automation cabinet, providing regulated power to a machine-tool spindle and executing velocity commands from the controller to keep cutting speeds stable. For metrology or synchronizing tasks, an auxiliary channel provides an incremental encoder output, duplicating position data for external devices. This added feedback path allows the spindle drive to share motion information with peripheral control hardware without interrupting the main control loop.
The power section can deliver a continuous output of 50 A, so the connected spindle motor receives a steady current envelope suited for heavy material-removal cycles. Its DC link is fed with 300 VDC, which is the nominal bus voltage supplied by the associated supply module. Thermal energy is removed by a mounted heat sink blower; this forced cooling method maintains internal component temperatures during sustained acceleration and deceleration. The blower itself is powered from an auxiliary line rated at 115 V, 50/60 Hz, allowing the cooling circuit to remain active whenever cabinet mains are present. Commanded speeds reach the drive through the real-time SERCOS interface, giving deterministic cycle timing between the CNC and the spindle inverter. Because the spindle drive receives power from a shared DC bus, it can operate as part of a cabinet system in which the supply module serves multiple axes.
Ambient operation is allowed from 5 to 45 °C, and installation altitude is permitted up to 1000 m without derating, so full output is available in most production plants. A second encoder socket is also present for spindle feedback or additional motor monitoring, allowing closed-loop control across multi-motor arrangements. This arrangement supports machines that need spindle feedback for synchronization, orientation, or monitoring tasks handled elsewhere in the control system. The unit is part of Series 3 and uses Version 2, which supports later SERCOS telegram structures and updated diagnostic functions.
