KDA 3.2-100-3-LQD-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 3.2-100-3-LQD-W1 is a spindle drive from the KDA Spindle Drives series with a rated current of 100 Amps and a DC supply voltage of 300 VDC. It uses a mounted heatsink blower for forced cooling and operates within an ambient temperature range of 5 to 45 degrees Celsius. The drive features a SERCOS speed command interface and supports installation up to 1000 meters above sea level.
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Product Description:
The KDA 3.2-100-3-LQD-W1 spindle drive is manufactured by Bosch Rexroth Indramat and belongs to the KDA Spindle Drives series. Designed for CNC and general machining centers, the unit converts DC bus power into controlled three-phase output for high-speed spindle motors. By receiving digital speed references from the motion controller, it regulates torque and acceleration so cutting, drilling, and grinding processes can maintain set surface speeds and feed rates with repeatable accuracy. The drive is intended for machine tools that need stable spindle speed under changing cut loads and frequent acceleration changes between programmed operations.
Internally, the power section is connected to a regulated bus that operates at 300 VDC, giving the drive a stable energy source for its inverter stage. Under sustained load, the current drawn by the spindle windings can reach 100 A, and this value affects cable sizing and protective device selection inside the electrical panel. Velocity references arrive through the SERCOS interface, allowing deterministic fiber-optic communication with the CNC kernel. A secondary digital position command value channel can be enabled when the application requires discrete step positioning or homing routines. Thermal management relies on forced cooling, so heat generated by IGBT switching is transferred to the external heat sink and away from sensitive control electronics.
To support the forced-air path, the integral mounted heat sink blower draws power from an auxiliary supply rated at 220 V, 50/60 Hz, which keeps airflow independent of the DC bus during rapid deceleration cycles. The drive is specified for ambient conditions from 5 to 45 °C, helping keep semiconductor junction temperatures within safe limits even when the machine enclosure is sealed. Mechanical components and conformal coatings are qualified for installation sites up to 1000 m above sea level, so reduced air density does not compromise the cooling path. These operating limits should be maintained during installation and use to support continuous duty in multishift machining service.
Frequently Asked Questions about KDA 3.2-100-3-LQD-W1:
Q: What type of cooling does the KDA 3.2-100-3-LQD-W1 spindle drive use?
A: The KDA 3.2-100-3-LQD-W1 spindle drive uses a mounted heatsink blower for cooling.
Q: What is the rated current of the KDA 3.2-100-3-LQD-W1 spindle drive?
A: This spindle drive operates with a rated current of 100 A to support high-power applications.
Q: What AC source is needed for the heatsink blower on the KDA 3.2-100-3-LQD-W1?
A: The required AC source for the heatsink blower is 220V at 50-60Hz.
Q: What type of position command interface does the KDA 3.2-100-3-LQD-W1 support?
A: This model accepts digital position command values as an additional interface.
Q: What is the recommended ambient temperature range for operating the KDA 3.2-100-3-LQD-W1?
A: The ambient operating temperature range is 5 to 45 degrees Celsius.
