KDA 3.1-100-3-DPD-U1 Bosch Rexroth Indramat
Wake Industrial LLC is not an authorized distributor of this product.
- Straightforward Pricing: No Rush Fees, No Credit Card Fees
The Bosch Rexroth Indramat KDA 3.1-100-3-DPD-U1 is a spindle drive from the KDA Spindle Drives series. It features a rated current of 100 Amps, a DC supply voltage of 300 VDC, and forced cooling with a mounted heatsink blower powered by 115V at 50-60Hz. The drive supports digital position and speed command values and allows for a second encoder input for spindle or additional motor feedback.
To contact sales for pricing and lead time:
Payment Methods
Shipping Methods
Our Credentials
Product Description:
The KDA 3.1-100-3-DPD-U1 is a spindle drive unit produced by Bosch Rexroth Indramat within the KDA Spindle Drives series. Designed to regulate torque and speed of high-frequency machine-tool spindles, it functions as the central power stage between a rectified DC bus and the motor. In automated machining centers and grinding lines, the drive converts command data from the CNC into controlled three-phase output, enabling rapid acceleration, repeatable positioning, and coordinated start/stop sequences essential for precision cutting. It is suited for spindle applications that require stable speed regulation during cutting and controlled orientation during indexed motion.
The power section is supplied from a 300 VDC intermediate circuit, and its output bridge is rated for 100 A, giving the unit margin for high-torque spin-up without current foldback. Velocity references arrive through a digital 16-bit parallel speed command channel, so the numerical control can send exact spindle speed values without analog drift. For indexing tasks, a dedicated digital position command value interface forwards fine orientation data directly to the regulator. Thermal management is assisted by a heat sink blower fed from 115 V/50–60 Hz, which keeps semiconductor junctions within limits even when the main DC link is idle. This control arrangement supports accurate spindle response during acceleration, speed holding, and orientation functions.
Airflow is provided through forced cooling using a mounted heat sink blower, ensuring heat removal regardless of cabinet circulation. Continuous duty is allowed in ambient conditions from 5 to 45 °C, so the drive can operate in typical shop environments without derating. The unit can be installed up to 1000 m above sea level without adjustment to current or voltage settings. A second encoder input accepts spindle or auxiliary motor feedback for synchronized motion and position monitoring. That additional feedback path supports spindle orientation and coordination with related machine functions.
Frequently Asked Questions about KDA 3.1-100-3-DPD-U1:
Q: What type of cooling system does the KDA 3.1-100-3-DPD-U1 spindle drive use?
A: This model uses a mounted heatsink blower and operates with forced cooling for efficient thermal management.
Q: What is the rated current for the KDA 3.1-100-3-DPD-U1 spindle drive?
A: The KDA 3.1-100-3-DPD-U1 supports a rated current of 100 A for robust spindle drive performance.
Q: What AC source is needed for the heatsink blower on the KDA 3.1-100-3-DPD-U1?
A: A 115V AC source at 50-60Hz is required to power the heatsink blower on this unit.
Q: What is the maximum installation elevation for the KDA 3.1-100-3-DPD-U1?
A: The KDA 3.1-100-3-DPD-U1 can be installed at elevations up to 1000 meters above sea level.
Q: What type of additional interfaces are available on the KDA 3.1-100-3-DPD-U1 spindle drive?
A: Digital position command value interfaces are included for precise input control.
