Product Description:

The KDA 3.2-150-3-A00-W1-220V is a spindle drive produced by Bosch Rexroth Indramat for the KDA Spindle Drives series. In machining centers and turning equipment, the unit converts regulated DC bus power into variable three-phase output for high-speed motor control, allowing precise spindle acceleration, deceleration, and holding torque during tool changes or cutting cycles. This operating role helps maintain stable spindle response during rapid speed changes and varying cutting loads. It is intended for applications that require controlled motor speed and consistent torque delivery during repeated production cycles.

The drive is supplied from a DC bus at 300 VDC, so the upstream power supply must maintain that voltage during dynamic load changes. Its continuous output capability reaches 150 A, which is the maximum current the unit can deliver to the spindle motor without derating. A separate heat sink blower operates from an auxiliary line rated at 220 V/50–60 Hz, so cooling airflow remains available even when the main DC link is disabled. The drive uses a mounted heat sink blower with forced cooling to remove heat from the power stage during prolonged high-speed operation. This cooling arrangement supports stable thermal behavior when the spindle is exposed to sustained electrical load.

The permitted ambient operating range is 5 to 45 °C, which suits typical indoor industrial conditions. Installation is allowed up to 1000 m above sea level before output derating is required. The speed loop accepts an analog command signal, allowing direct connection to CNC controls that send a voltage reference for the requested spindle speed. The product is Series 3, and the internal design revision is version 2. No additional interface options are fitted, and a second encoder input is omitted when only primary spindle feedback is used. This layout keeps the connection arrangement straightforward for applications that rely on a single spindle feedback channel.