KDA 3.1-150-3-APD-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-APD-W1 is a spindle drive from the KDA Spindle Drives series with a rated current of 150 Amps and a DC supply voltage of 300 VDC. It features forced cooling via a mounted heatsink blower and supports ambient temperatures between 5 and 45 degrees Celsius. The drive includes digital position command value interfaces and a second encoder input for spindle or motor feedback.
Internal Product Review
The KDA 3.1-150-3-APD-W1 spindle drive from Bosch Rexroth Indramat features a rated current of 150 A and utilizes a forced cooling system with a mounted heatsink blower for reliable thermal management. This model supports both digital position command value interfaces and analog speed command values, providing flexibility for integration. Overall, the drive excels in demanding spindle applications thanks to its high current capacity and versatile command input options.
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Product Description:
Bosch Rexroth Indramat supplies the KDA 3.1-150-3-APD-W1, a member of the KDA Spindle Drives series. This model is identified as design series 3 within the product line. The drive regulates spindle motors in metal-cutting or woodworking centers by converting a constant 300 V DC bus from an associated supply module into variable-frequency output. Integrated control channels allow the CNC to impose velocity and position targets, letting the unit act as the power stage for rapid acceleration, precise speed holding, and controlled deceleration in closed-loop automation. It is suited for machine tools that require stable spindle response during cutting and positioning sequences.
The drive housing incorporates a mounted heat sink blower that forces air across the power semiconductors. This fan is energized from a separate 220 V/50-60 Hz supply, allowing thermal management to remain independent of the DC link. Because the cooling path is active, the device uses forced cooling, which permits full-load operation without derating. Internally, the converter is tied to a 300 VDC intermediate circuit and can deliver up to 150 A of continuous motor current, matching medium- to high-power spindle ratings. These electrical values must match the connected asynchronous or synchronous spindle motor.
The unit maintains rated performance in ambient temperatures from 5 to 45 °C, provided installation altitude does not exceed 1000 m above sea level. A second encoder socket accepts spindle-mounted or auxiliary motor feedback to close speed loops directly in the drive. For command input, the controller processes a digital position command value interface for stepwise positioning, while an independent analog speed command value input enables continuous RPM adjustment. These inputs allow the CNC to coordinate tool changes, tapping, and surface finishing cycles without additional interface modules.
