KDA 3.1-150-3-A00-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 3.1-150-3-A00-W1 is a spindle drive from the KDA Spindle Drives series, featuring a rated current of 150 Amps and a DC supply voltage of 300 VDC. It utilizes forced cooling with a mounted heatsink blower and operates within an ambient temperature range of 5 to 45 degrees Celsius.
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Product Description:
The KDA 3.1-150-3-A00-W1 spindle drive is produced by Bosch Rexroth Indramat as part of the KDA Spindle Drives series. Within a machining center, the unit links the CNC controller to the high-speed spindle motor, supplying controlled current and monitoring rotor feedback so that cutting speed remains synchronized with programmed feed rates. By regulating current and feedback together, it helps maintain stable spindle behavior during acceleration, deceleration, and constant-speed cutting. This control approach supports repeatable machining results when the spindle must change speed between tool paths or hold speed under varying load. It is intended for machine tools that require close coordination between axis motion and spindle rotation.
The power section is energized by a DC bus of 300 VDC, and its current stage is rated for 150 A, giving the spindle enough torque for demanding cutting cycles. The blower operates from 220 V, 50–60 Hz, which keeps the fan supply separate from the DC link used by the power stage. Thermal control relies on a mounted heat sink blower working in forced cooling mode, so cabinet air is pushed directly across the fins instead of relying on natural convection. This airflow helps the unit manage the heat produced during continuous high-load operation and supports stable performance during long machining runs. There is no additional interface card, and the second encoder socket is omitted, which reduces unused connection points inside the cabinet.
The drive can operate in ambient temperatures from 5 to 45 °C when adequate airflow is maintained. It can be installed up to 1000 m above sea level without changing the power section settings. The unit is Series 3, and speed reference is accepted as an analog speed command from the CNC. This allows the controller to send a continuous reference signal instead of stepped speed requests. The analog reference format also fits control systems that use voltage-based spindle commands, and spindle speed can be adjusted smoothly to match different machining operations across a program.
Frequently Asked Questions about KDA 3.1-150-3-A00-W1:
Q: What is the rated current for the KDA 3.1-150-3-A00-W1 spindle drive?
A: The KDA 3.1-150-3-A00-W1 spindle drive operates with a rated current of 150 A.
Q: What cooling method is used in the KDA 3.1-150-3-A00-W1 unit?
A: This spindle drive utilizes a mounted heatsink blower and forced cooling for thermal management.
Q: What DC supply voltage does the KDA 3.1-150-3-A00-W1 require?
A: The KDA 3.1-150-3-A00-W1 accepts a DC supply voltage of 300 VDC during operation.
Q: What type of speed command input does the KDA 3.1-150-3-A00-W1 support?
A: An analogue signal is used for the speed command value input on this spindle drive.
Q: What is the permissible ambient temperature range for operating the KDA 3.1-150-3-A00-W1?
A: The ambient temperature range for this drive is from 5 to 45 degrees Celsius.
