KDA 2.1-100-3-L0D-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.
The Bosch Rexroth Indramat KDA 2.1-100-3-L0D-U1 is a spindle drive from the KDA Spindle Drives series. It provides a rated current of 100 Amps and works with a DC supply voltage of 300 VDC. The drive uses a forced cooling system with a mounted heatsink blower and supports a SERCOS interface for speed command value.
Internal Product Review
The KDA 2.1-100-3-L0D-U1 spindle drive from Bosch Rexroth Indramat features forced cooling with a mounted heatsink blower, powered by a 115V/50-60Hz AC source, ensuring reliable thermal management in demanding environments. Rated for 100 A and a 300 VDC supply voltage, this model offers high-performance operation for industrial spindle applications. Its SERCOS interface for speed command value integration makes it a standout option for precision and automation.
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Product Description:
The KDA 2.1-100-3-L0D-U1 spindle drive is produced by Bosch Rexroth Indramat and belongs to the KDA Spindle Drives series. Classified as a version 2 unit in this product family, it forms the power stage that links a machine controller to a synchronous or asynchronous spindle motor. Within an automation cell, the drive interprets digital reference values, governs the inverter bridge, and safeguards the motor so that cutting, drilling, or grinding processes run at precise rotational speeds.
Its DC bus is stabilized at 300 VDC, a level that matches the common power supply used in multi-axis cabinets and allows energy to be shared with regenerative modules. The power section can deliver a continuous phase current of 100 A, giving the spindle enough torque for heavy cuts without forcing the inverter into overload. Thermal energy is removed by a heat sink blower fed from an auxiliary line of 115 V/50-60 Hz; this localized fan maintains semiconductor junction temperatures independent of enclosure airflow. Speed commands reach the drive over the SERCOS Interface, allowing deterministic transmission of setpoints from the CNC controller. An auxiliary input accepts a digital position command value for indexed moves.
The cooling assembly is supplied as a mounted heat sink blower that expels waste heat directly from the aluminum ribbing; because airflow is driven rather than passive, the unit is classified for forced cooling service. Reliable operation is specified for ambient temperatures between 5 to 45 °C, so installation in sealed cabinets must account for this range. Mounting altitude is limited to 1000 m above sea level to prevent a reduction in dielectric strength and fan performance. For axes that need a redundant speed sensor, the spindle drive does not feature an additional input for a second encoder.
