KDA 3.3-150-3-A00-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.
MPN: R911265550
The Bosch Rexroth Indramat KDA 3.3-150-3-A00-U1 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. This drive uses a mounted heatsink blower for forced cooling and operates within an ambient temperature range of 5 to 45 degrees Celsius.
Internal Product Review
The KDA 3.3-150-3-A00-U1 spindle drive from Bosch Rexroth Indramat delivers a solid 150 A rated current with a 300 VDC supply voltage, making it ideal for demanding spindle applications. Forced cooling is achieved through a mounted heatsink blower powered by a 115V/50-60Hz source, which supports reliable operation within a 5 to 45 degrees Celsius ambient temperature range. This model stands out for its high current capability and efficient cooling design.
Have a part to sell?
Wake Industrial Warranty
To contact sales for pricing and lead time:
Payment Methods
Shipping Methods
Our Credentials
Product Description:
The Bosch Rexroth Indramat KDA 3.3-150-3-A00-U1 belongs to the KDA Spindle Drives series. It is a closed-loop spindle drive that supplies regulated power to high-speed machine-tool spindles in automated production cells. The unit converts energy from a common DC bus into three-phase motor output, and its integrated heat sink blower removes internal heat. Closed-loop regulation helps the drive respond to feedback changes during load shifts, which is important for maintaining spindle speed during drilling, milling, or grinding operations. When paired with compatible motion controllers, it provides the torque and speed accuracy required for precision spindle applications.
The drive operates from a stabilized DC link of 300 VDC, which is routed from the common supply module in the cabinet. Under continuous load, the power stage can deliver 150 A of output current, permitting direct connection to medium-frame induction or synchronous spindle motors. Thermal energy from the switching transistors is removed by a mounted heat sink blower, and that fan is powered by an auxiliary supply of 115 V/50–60 Hz through the front service connector. Because airflow is directed across the fins, the module uses forced cooling to keep the internal temperature within its operating limit during rapid acceleration and deceleration cycles. This cooling method supports stable operation in applications where spindle demand changes quickly over short time intervals.
The converter is intended for ambient air from 5 to 45 °C and for installation up to 1000 m above sea level without derating. Its control board interprets an analog reference voltage for velocity demand, which allows straightforward connection to legacy CNC controllers that generate ±10 V signals. This variant is identified as Series 3. It does not include optional communication daughterboards, and a second encoder input is not provided, so only the primary spindle encoder is processed. That arrangement suits systems that use a single feedback channel and a simple analog command interface.
