KDA 2.1-150-3-DPD-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 2.1-150-3-DPD-W1 is a spindle drive from the KDA Spindle Drives series. It features a rated current of 150 Amps and operates with a DC supply voltage of 300 VDC. This unit uses forced cooling with a mounted heatsink blower that requires a 220V AC source at 50-60Hz, and supports digital speed and position command values.
Internal Product Review
The KDA 2.1-150-3-DPD-W1 spindle drive from Bosch Rexroth Indramat delivers a powerful 150 A rated current and operates with a 300 VDC supply voltage, making it suitable for high-demand industrial spindle applications. Equipped with a mounted heatsink blower for forced cooling and a digital 16-bit parallel speed command interface, this model ensures stable performance and precise control. Overall, the KDA 2.1-150-3-DPD-W1 excels in scenarios requiring high current and efficient thermal management.
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Product Description:
Bosch Rexroth Indramat's KDA 2.1-150-3-DPD-W1 is a spindle drive within the KDA Spindle Drives series. The unit converts regulated DC power into three-phase output for high-speed machining spindles and works with digital numerical control systems that demand rapid torque response. It is intended for machine tools where spindle speed must track command changes with very little delay. By hosting both speed and position channels, it acts as the central drive element that synchronizes spindle motion with programmed toolpaths in automated production lines.
The power section is sized for a continuous output of 150 A, allowing the drive to energize large spindle motors without current derating at nominal load. Its intermediate circuit is stabilized at 300 VDC, so a matching supply module must deliver that voltage to maintain the specified torque bandwidth. Motion commands are issued through a parallel bus that accepts a digital 16-bit parallel speed word; this resolution gives the controller 65,536 discrete velocity points over the selected range. A separate channel receives a digital position command value, enabling coordinated tapping or contour turning. For the heat sink blower, the integrated fan draws from a single-phase line rated at 220 V/50–60 Hz, helping keep semiconductor junction temperatures within safe limits during prolonged acceleration cycles.
A mounted heat sink blower and a forced-air path make up the drive's thermal management system, so cabinet layout must allow unobstructed exhaust flow. Correct service temperatures range from 5 to 45 °C, which matches general machine-room conditions without auxiliary enclosure cooling. Installations can be sited up to 1000 m above sea level; beyond this altitude, lower air density reduces cooling effectiveness and may require derating. A secondary encoder port supports additional spindle or auxiliary motor feedback, which helps maintain phase alignment during tool changes and other synchronized motions. The unit is in Series 2, which identifies the product generation and connector style used for this KDA version.
