KDA 3.1-150-3-LYI-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 3.1-150-3-LYI-W1 spindle drive is part of the KDA Spindle Drives series and offers a rated current of 150 Amps with a DC supply voltage of 300 VDC. It features a forced cooling system using a mounted heatsink blower powered by a 220V AC source at 50-60Hz, and supports SERCOS interface for speed command value. The drive provides incremental encoder output and includes a second encoder input with synchronous input.
Internal Product Review
The KDA 3.1-150-3-LYI-W1 spindle drive from Bosch Rexroth Indramat features a rated current of 150 A and operates with a 300 VDC supply voltage, making it suitable for demanding spindle control tasks. Forced cooling with a mounted heatsink blower ensures stable operation within an ambient temperature range of 5 to 45 degrees Celsius. The inclusion of an incremental encoder output and SERCOS interface highlights its advanced control capabilities.
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Product Description:
The KDA 3.1-150-3-LYI-W1 spindle drive is built by Bosch Rexroth Indramat and belongs to the KDA Spindle Drives series. As a spindle drive, it supplies regulated three-phase current to high-speed machining spindles, allowing precise torque and speed control in CNC centers and other automated equipment. The model follows the series 3 design revision and uses digital interfaces so it can coordinate with motion controllers during demanding production cycles. This operating role lets the control system adjust spindle behavior quickly as cutting load and commanded speed change during machining.
The drive draws DC bus power from a 300 VDC source, and its power section can deliver up to 150 A of continuous output current to the spindle motor. Thermal management relies on a mounted heat-sink blower, and the blower itself is supplied from a dedicated 220 V/50-60 Hz AC line. With forced cooling, air is directed across the aluminum fins to remove heat from the power section during extended high-load operation. A built-in incremental encoder output is provided so downstream numerical controls can read actual spindle position without an external splitter, which helps maintain stable velocity regulation and coordinated spindle response.
Installation is permitted at altitudes up to 1000 m above sea level and in ambient temperatures from 5 to 45 °C without derating. Speed commands are transferred over the SERCOS interface, which provides fiber-optic noise immunity and standardized telegram structures for complex multi-axis cells. For machines that require additional feedback, the drive includes a second encoder input and a synchronous input so the control system can compare more than one signal source during spindle orientation tasks. This arrangement supports synchronized motion functions where accurate feedback handling is necessary for repeatable spindle control.
