KDA 2.1-100-3-A0D-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-A0D-U1 is a spindle drive from the KDA Spindle Drives series and operates with a rated current of 100 Amps and a DC supply voltage of 300 V. It features a forced cooling mode with a mounted heatsink blower powered by a 115V AC source at 50-60Hz. The drive is designed to operate in ambient temperatures between 5 and 45 degrees Celsius and includes additional digital position command interfaces.
Internal Product Review
The KDA 2.1-100-3-A0D-U1 spindle drive from Bosch Rexroth Indramat features a mounted heatsink blower with forced cooling, ensuring effective thermal management during extended operation. With a rated current of 100 A and a DC supply voltage of 300 VDC, this unit delivers dependable high-power performance for demanding spindle applications. The digital position command interface adds versatility, making this drive a strong choice for precision control environments.
Have a part to sell?
Wake Industrial Warranty
To contact sales for pricing and lead time:
Payment Methods
Shipping Methods
Our Credentials
Product Description:
The KDA 2.1-100-3-A0D-U1 is a spindle drive produced by Bosch Rexroth Indramat for the KDA Spindle Drives series. Within an automation cell, it delivers regulated three-phase power to high-speed motorized spindles and converts DC-link energy from a common rectifier into controlled torque and speed. The 2.1 designation indicates the version used for this model, and its spindle-oriented role distinguishes it from servo and axis drives used elsewhere in the same machine. This type of drive is intended for applications that require stable spindle speed during cutting, drilling, and other continuous-motion processes.
The drive operates on a DC bus of 300 VDC, and its power electronics are sized for a continuous output current of 100 A. A dedicated heat sink blower is powered from an auxiliary source of 115 V/50-60 Hz, so no separate low-voltage supply is required for fan operation. Speed reference data enter the control card as an analog signal, allowing direct connection to common velocity loops in CNC controllers, while a second channel accepts a digital position command value for precise orientation moves such as tool-change positioning. This arrangement allows the drive to support both continuous speed control and indexed spindle positioning in the same system.
A mounted heat sink blower combined with forced cooling maintains internal device temperature even when cabinet air is stagnant. The permissible ambient range is 5 to 45 °C, which matches standard shop floor climates without additional conditioning. Installation is allowed up to 1000 m above sea level. Because the second encoder input is not available, spindle feedback must be routed through the primary encoder channel, which simplifies wiring but does not support redundant monitoring. The cooling arrangement is suited to enclosed cabinets where natural airflow alone would not be enough to remove heat from the power section.
