The Bosch Rexroth Indramat KDA 2.1-150-3-AYI-U1 from the KDA Spindle Drives series features the Product model KDA, Series 2, and Design version 1 in a compact, high-performance package. This main spindle drive delivers a Rated current of 150 A and operates on a DC bus voltage of 300 V to support continuous power over an extensive speed range. Positioning precision is enhanced by a ±10 V analog speed command signal, while the drive’s inherent high stiffness ensures repeatable accuracy under dynamic loads. Engineered for spindle applications, it combines robust construction with advanced control features for demanding industrial environments.
Reliability and integration are achieved through a dual-interface approach: an Auxiliary encoder input supports both auxiliary and synchronous feedback, while an Auxiliary interface offers incremental encoder output for seamless motion control. Thermal management is addressed by a forced cooling method using a dedicated heatsink blower rated for a Blower AC supply of 115 VAC. These features maintain optimal junction temperatures during sustained operation and protect against thermal derating. The drive’s power electronics and control algorithms are tightly integrated to deliver smooth torque output and rapid response to speed or torque commands.
Installation and commissioning are simplified by consistent mechanical dimensions and standardized power connections. Designed to withstand industrial spindle loads, the drive supports high torsional rigidity and minimizes vibration for enhanced tool life and surface finish. With precision control and dependable performance, the KDA 2.1-150-3-AYI-U1 spindle drive is an ideal solution for CNC machining, milling, and other high-speed rotary applications.
Auxiliary encoder input
Auxiliary & synchronous
Auxiliary interface
Incremental encoder output
Blower AC supply
115 VAC
Cooling method
Forced (heatsink blower)
DC bus voltage
300 V
Design version
1
Product model
KDA
Rated current
150 A
Series
2
Speed command signal
±10 V analog