KDA 2.1-100-3-LPS-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-LPS-U1 is part of the KDA Spindle Drives series and features a rated current of 100 Amps with a DC supply voltage of 300 volts. The spindle drive uses forced cooling with a mounted heatsink blower powered by a 115V AC source, and includes a serial interface and SERCOS interface for speed command. It operates in ambient temperatures from 5 to 45 degrees Celsius and can be installed up to 1000 meters above sea level.
Internal Product Review
The KDA 2.1-100-3-LPS-U1 is a spindle drive from Bosch Rexroth Indramat, engineered for high-performance applications with a 100 A rated current and 300 VDC supply voltage. Its forced cooling with a mounted heatsink blower ensures reliable thermal management, while the RS 232 C serial interface allows for straightforward integration. This drive excels in demanding environments, highlighted by its ability to maintain performance across a wide ambient temperature range.
Have a part to sell?
Wake Industrial Warranty
To contact sales for pricing and lead time:
Payment Methods
Shipping Methods
Our Credentials
Product Description:
Bosch Rexroth Indramat manufactures the KDA 2.1-100-3-LPS-U1 as part of the KDA Spindle Drives series. This unit is a spindle drive that supplies controlled three-phase power to high-speed machine tool spindles, allowing closed-loop speed and position regulation in automated production cells. Version 2 electronics inside the drive connect it directly to Indramat motion controllers, forming a self-contained module that converts a fixed DC bus into regulated AC output for dynamic spindle acceleration and braking.
For power conversion, the drive receives a bus of 300 VDC and can deliver a continuous motor phase current of 100 A, so inverter components and cable sizing must support that load. Thermal management is handled by a mounted heat sink blower; the impeller operates on 115 V/50-60 Hz from an auxiliary mains tap, and the airflow provides forced cooling to keep semiconductor junction temperatures within limits during rapid spindle duty cycles. A dedicated diagnostic connector provides an RS-232-C serial link, enabling parameter adjustment and fault logging from a host PC without interfering with real-time motion commands.
System designers can install the drive in workshops ranging from 5 to 45 °C ambient, and performance remains stable up to 1000 m above sea level without derating. Speed references enter through a fiber-optic SERCOS interface, giving deterministic update rates that match Indramat multi-axis controllers. For applications that require exact spindle orientation or an additional position loop, the front panel includes a second encoder input that can accept resolver, TTL, or inductive feedback signals. The drive is suitable for machining centers, grinders, and turning stations that require precise spindle control across varied mounting conditions.
