KDA 3.3-100-3-L00-W1 Bosch Rexroth Indramat
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MPN: R911270013
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The Bosch Rexroth Indramat KDA 3.3-100-3-L00-W1 is part of the KDA Spindle Drives series and is designed as a spindle drive with a rated current of 100 Amps. This drive features forced cooling with a mounted heatsink blower powered by a 220V AC source at 50-60Hz, and supports a SERCOS interface for speed command values. It operates within an ambient temperature range of 5 to 45 degrees Celsius and at elevations up to 1000 meters above sea level.
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Product Description:
The KDA 3.3-100-3-L00-W1 is a spindle drive manufactured by Bosch Rexroth Indramat and is part of the KDA Spindle Drives series. In automated machining centers, this drive converts DC-link energy into controlled three-phase power for high-speed spindles, allowing precise speed regulation during cutting and drilling cycles. Connected to a digital controller through fiber-optic command lines, the unit closes the speed loop of the spindle axis and delivers the torque profile needed for demanding metal-removal operations. That control behavior helps the spindle respond smoothly to changing tool loads and programmed speed ramps during a machining sequence.
The drive operates from a DC bus of 300 VDC, and its power stage can supply up to 100 A of continuous current, giving paired motors headroom for acceleration surges and sustained cutting loads. Heat generated by the IGBT stack is removed by a mounted heat sink blower; this blower is powered from a separate 220 V/50-60 Hz source so cooling continues even when the DC link is de-energized. Because airflow is directed through the fins rather than relying on convection, the unit uses forced cooling, which helps keep semiconductor temperatures within their operating range during prolonged spindle use. Speed references arrive through a digital SERCOS interface, providing deterministic communication with CNC or PLC hosts and reducing the signal drift associated with analog commands. The separate blower supply also helps remove retained heat after motion stops, which reduces thermal soak inside the power section.
The permissible ambient temperature range is 5 to 45 degrees Celsius, supporting operation in typical factory conditions when adequate cabinet airflow is available. Installation altitude must remain below 1000 m above sea level, since thinner air reduces heat removal and can lower continuous current capability. The electronics bay is supplied with no additional interface option, so any extra encoder feedback or communication expansion must be provided by external modules. This makes the base unit suitable for applications where spindle control is centralized and added interface functions are handled elsewhere in the system.
Frequently Asked Questions about KDA 3.3-100-3-L00-W1:
Q: What is the rated current for the KDA 3.3-100-3-L00-W1 spindle drive?
A: The KDA 3.3-100-3-L00-W1 supports a rated current of 100 A for spindle drive operations.
Q: How is the KDA 3.3-100-3-L00-W1 spindle drive cooled?
A: This spindle drive uses a mounted heatsink blower for forced cooling to maintain temperature during operation.
Q: Which interface is used for the speed command on the KDA 3.3-100-3-L00-W1?
A: The speed command value for this model is set using a SERCOS interface.
Q: What is the permitted ambient temperature range for the KDA 3.3-100-3-L00-W1?
A: The KDA 3.3-100-3-L00-W1 can operate in ambient temperatures ranging from 5 to 45 degrees Celsius.
Q: What power supply is needed for the heatsink blower on the KDA 3.3-100-3-L00-W1?
A: This model requires a 220V, 50-60Hz AC source to power its heatsink blower.
