KDA 3.2-100-3-A0I-W1 Bosch Rexroth Indramat
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MPN: R911237252
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The Bosch Rexroth Indramat KDA 3.2-100-3-A0I-W1 is a spindle drive in the KDA Spindle Drives series, designed with a mounted heatsink blower and forced cooling for operation. It offers a rated current of 100 Amps and is equipped with an incremental encoder output interface. This drive operates at a DC supply voltage of 300 VDC and functions reliably in ambient temperatures from 5 to 45 degrees Celsius.
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Product Description:
The KDA 3.2-100-3-A0I-W1 is a drive module produced by Bosch Rexroth Indramat for the KDA Spindle Drives series, release 3, version 2. Integrated with an Indramat master, the device supplies regulated current to permanent-magnet or induction spindles used in metal-cutting and forming equipment. Its task is to translate velocity commands from the numerical control into precise electromagnetic torque so that set surface speeds are maintained during machining. This control behavior helps the spindle respond smoothly as cutting loads change during operation. It is intended for closed-loop spindle service rather than standalone motor operation.
Power arrives through a DC link rated at 300 V DC, and this voltage is switched by the internal inverter to energize the motor phases. The semiconductors can deliver a continuous phase current of 100 A, matching medium-to-large spindle requirements. Excess heat is removed by a heat sink-mounted blower located on the rear panel, and airflow is increased by forced cooling to keep internal temperatures under control. The blower itself is energized from an auxiliary supply of 220 V at 50/60 Hz, so the unit requires a dedicated single-phase feed for the cooling circuit. This arrangement supports stable operation during extended cutting cycles without relying on passive cabinet ventilation alone. The current and cooling combination suits spindle axes that must hold speed under sustained process demand.
Control data reach the drive as an analog speed command, and position information is returned to the CNC through the incremental encoder output. A second encoder socket is not included, so feedback routing is limited to the available connection path. Continuous service is specified between 5 to 45 °C, provided the cabinet has adequate ventilation and airflow around the module. Installation is supported up to 1000 m above sea level with no change in current limits, although reduced air density at higher elevations can affect heat removal. The available interface and operating limits support spindle acceleration and speed regulation in enclosed machine cabinets.
Frequently Asked Questions about KDA 3.2-100-3-A0I-W1:
Q: What type of cooling system does the KDA 3.2-100-3-A0I-W1 spindle drive use?
A: The KDA 3.2-100-3-A0I-W1 spindle drive is equipped with a mounted heatsink blower for forced cooling.
Q: What is the rated current of the KDA 3.2-100-3-A0I-W1 spindle drive?
A: This spindle drive is rated for a continuous current of 100 A.
Q: What additional interface is available on the KDA 3.2-100-3-A0I-W1?
A: The KDA 3.2-100-3-A0I-W1 supports an incremental encoder output as an additional interface.
Q: What is the DC supply voltage required for the KDA 3.2-100-3-A0I-W1 spindle drive?
A: It operates on a DC supply voltage of 300 VDC.
Q: What is the maximum installation elevation for the KDA 3.2-100-3-A0I-W1?
A: The KDA 3.2-100-3-A0I-W1 can be installed at elevations up to 1000 meters above sea level.
