KDA 3.3-150-3-L00-W1 Bosch Rexroth Indramat
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MPN: R911262635
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The Bosch Rexroth Indramat KDA 3.3-150-3-L00-W1 is a spindle drive from the KDA Spindle Drives series and has a rated current of 150 Amps. It features forced cooling with a mounted heatsink blower powered by a 220V AC supply at 50-60Hz. The drive operates at a DC supply voltage of 300 VDC and supports speed command value through a SERCOS interface.
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Product Description:
The KDA 3.3-150-3-L00-W1 spindle drive is produced by Bosch Rexroth Indramat within the KDA Spindle Drives series. It works as the closed-loop power stage between a DC bus and a machine-tool spindle motor, shaping current and voltage so the motor follows controller speed commands with minimal settling time. In cabinet installations, it supports synchronized spindle operation with feed axes during drilling, milling, and grinding processes where spindle speed must track programmed changes. This operating role makes the unit suitable for machine tools that depend on repeatable spindle speed during contouring, drilling cycles, and other material-removal processes.
Internally, the drive draws energy from a bus link rated at 300 VDC, and its output stage can deliver up to 150 A of continuous current to the spindle windings for sustained machining duty. Thermal control relies on a mounted heat sink blower; air is pulled across the fin stack and ejected from the cabinet, supporting forced cooling when the spindle is operated under heavy load for extended periods. This cooling arrangement moves heat away from the power section without requiring a separate liquid circuit. Velocity reference data reach the controller through the real-time SERCOS interface, allowing the CNC to update speed setpoints in step with interpolated axis motion and keep spindle behavior coordinated with feed-axis movement.
The blower uses an independent supply of 220 V/50–60 Hz, allowing spindle power wiring to remain isolated from the auxiliary fan circuit and separating the cooling supply from the main power path. Stable performance is specified for ambient temperatures between 5 to 45 °C, and no altitude correction is required up to 1000 m above sea level, so the drive can operate in standard industrial indoor environments without published derating across that elevation range. Because the drive carries no additional interface option, diagnostics and service functions must pass through the primary SERCOS channel, and axis position feedback must come from the motor encoder alone because a second encoder input is not provided.
Frequently Asked Questions about KDA 3.3-150-3-L00-W1:
Q: What is the required DC supply voltage for the KDA 3.3-150-3-L00-W1 spindle drive?
A: The KDA 3.3-150-3-L00-W1 operates on a DC supply voltage of 300 VDC.
Q: How is the KDA 3.3-150-3-L00-W1 spindle drive cooled during operation?
A: This drive uses forced cooling through a mounted heatsink blower to regulate its temperature.
Q: What is the rated current capacity of the KDA 3.3-150-3-L00-W1?
A: The rated current for this spindle drive is 150 A.
Q: Which interface is used for speed command input on the KDA 3.3-150-3-L00-W1?
A: The KDA 3.3-150-3-L00-W1 receives its speed command value through a SERCOS interface.
Q: What is the maximum installation elevation for the KDA 3.3-150-3-L00-W1 spindle drive?
A: This drive can be installed at elevations up to 1000 meters above sea level.
