KDA 2.1-050-3-LPS-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 2.1-050-3-LPS-W1 is a spindle drive from the KDA Spindle Drives series with a rated current of 50 Amps and a DC supply voltage of 300 VDC. It features a forced cooling mode with a mounted heatsink blower rated for 220V and provides a serial RS 232 C interface as well as a SERCOS Interface for speed command value. The drive supports a second encoder input for spindle or additional motor feedback and can operate in ambient temperatures from 5 to 45 degrees Celsius.
Internal Product Review
The KDA 2.1-050-3-LPS-W1 is a spindle drive from Bosch Rexroth Indramat, featuring a rated current of 50 A and a DC supply voltage of 300 VDC. Forced cooling is achieved with a mounted heatsink blower, supporting reliable operation in demanding environments. This model stands out with its serial interface (RS 232 C) and second encoder input for advanced feedback options.
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Product Description:
Bosch Rexroth Indramat supplies the KDA 2.1-050-3-LPS-W1 spindle drive as part of its KDA Spindle Drives series. The unit converts a regulated DC link into variable three-phase power for high-speed machine tool spindles, allowing tight speed and torque control in automated machining centers and similar motion systems. When integrated with CNC or PLC controls, the drive lets the machine adjust spindle behavior electronically to match changing cutting conditions. This reduces the need for mechanical speed changers and helps maintain consistent spindle response during drilling, milling, and contouring operations.
The power section operates from a DC link of 300 VDC, and its output stage can deliver a continuous motor current of 50 A, enabling rapid acceleration of large-inertia spindle assemblies. An internal auxiliary supply feeds the heatsink blower from 220 V/50–60 Hz, which supports stable operation during long cutting cycles and repeated speed changes. Velocity commands enter through the SERCOS interface, supporting deterministic fiber-optic communication with the master controller and fast exchange of motion data. Parameter adjustment and service diagnostics are handled over a serial interface (RS-232C), so setup values and status information can be accessed without interrupting the real-time control path.
Thermal management uses forced cooling with a mounted heatsink blower, keeping power semiconductors within operating temperature across an ambient range of 5 to 45 °C. The design retains full performance up to 1000 m elevation, which suits most indoor industrial installations without output reduction. A second encoder socket is reserved for spindle or auxiliary motor feedback, allowing the control to process high-resolution position signals during spindle orientation, rigid tapping, or C-axis synchronization.
