KDA 3.2-050-3-LQD-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 3.2-050-3-LQD-W1 is a spindle drive from the KDA Spindle Drives series with a rated current of 50 Amps and a DC supply voltage of 300 VDC. It features a forced cooling mode using a mounted heatsink blower and supports a SERCOS interface for speed command value and a digital interface for position command value. The drive operates in ambient temperatures from 5 to 45 degrees Celsius and at elevations up to 1000 meters above sea level.
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Product Description:
The KDA 3.2-050-3-LQD-W1 spindle drive is manufactured by Bosch Rexroth Indramat and belongs to the KDA Spindle Drives series. As a dedicated spindle drive, it converts regulated DC bus energy into three-phase output for high-speed machine-tool spindles and provides closed-loop speed control within automated machining centers. The 3.2 model code places it in Series 3, Version 2 of this family. Its role is to stabilize spindle velocity so cutting, grinding, or drilling processes remain consistent when tool engagement and material load change during operation. Stable spindle regulation also helps the machine hold commanded surface speed during repeated production cycles. That behavior supports repeatable tool performance and smoother transitions between roughing and finishing cuts.
Internally, the drive operates from a DC link of 300 VDC, and its power stage can deliver up to 50 A of continuous motor current, which suits medium-power spindles that require fast acceleration and controlled deceleration. Speed setpoints arrive through the SERCOS interface, allowing deterministic coordination with CNC controls during synchronized machining sequences. Thermal management relies on forced cooling, and the power electronics are bonded to an external heat sink that is flushed by a blower supplied from a dedicated 220 V/50-60 Hz auxiliary line. This arrangement supports steady electrical output during long periods of operation and helps reduce thermal drift in the power section.
Continuous service is specified for 5 to 45 °C ambient conditions, which supports normal industrial installation environments. Full current is also guaranteed up to 1000 m above sea level, so altitude does not usually require derating in standard plant locations. Cooling air is supplied by a mounted heat sink blower, so the drive does not rely only on cabinet ventilation. For coordinated motion, a dedicated port accepts a digital position command value, allowing the CNC to impose absolute spindle position for orientation, threading, and other indexed spindle functions. This control method is useful when the spindle must stop at a repeatable angular position before the next machine action begins.
Frequently Asked Questions about KDA 3.2-050-3-LQD-W1:
Q: What is the required voltage and frequency for the heatsink blower on the KDA 3.2-050-3-LQD-W1 spindle drive?
A: The KDA 3.2-050-3-LQD-W1 spindle drive uses a heatsink blower that operates with a 220V AC source at 50-60Hz.
Q: What type of additional interface is included on the KDA 3.2-050-3-LQD-W1?
A: This model supports digital position command value interfaces for flexible integration.
Q: What is the allowable ambient temperature range for operating the KDA 3.2-050-3-LQD-W1?
A: The KDA 3.2-050-3-LQD-W1 is rated for operation in temperatures from 5 to 45 degrees Celsius.
Q: How is the KDA 3.2-050-3-LQD-W1 cooled during operation?
A: This spindle drive features forced cooling via a mounted heatsink blower for maintaining optimal temperature.
Q: What is the DC supply voltage specification for the KDA 3.2-050-3-LQD-W1 spindle drive?
A: The drive operates with a DC supply voltage of 300 VDC.
