KDA 3.2-050-3-A0I-W1 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KDA 3.2-050-3-A0I-W1 is a spindle drive in the KDA Spindle Drives series and features a mounted heatsink blower for forced cooling. It has a rated current of 50 Amps and operates on a DC supply voltage of 300 VDC. The unit supports an incremental encoder output interface and functions within ambient temperatures from 5 to 45 degrees Celsius.
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Product Description:
The KDA 3.2-050-3-A0I-W1 spindle drive is produced by Bosch Rexroth Indramat as part of the KDA Spindle Drives series. It converts a fixed DC bus voltage into a controlled three-phase output that regulates high-speed machining spindles, allowing CNC tools to follow commanded velocity and torque with tight control. Encoder support and active cooling help the drive maintain stable spindle response during rapid acceleration, deceleration, and load changes in milling or drilling cycles. The unit is intended for applications where spindle speed must change quickly without losing control accuracy. This makes it suitable for mid-power machine tools and automated production cells that need repeatable surface quality.
The drive is energized from a DC link rated at 300 VDC, and this supply powers the output stage during spindle operation. Continuous motor current can reach 50 A, so the power path must be matched to that load in the cabinet. That current capacity supports sustained spindle demand during material engagement without immediately forcing reduced output. Heat is removed by a mounted heat sink blower, and the unit uses forced cooling instead of passive convection. Reliable operation is permitted in ambient temperatures from 5 to 45 °C when the installation provides controlled cabinet airflow.
The blower uses 220 V/50-60 Hz auxiliary power, which allows cooling to remain available when the DC bus is not active. Installation is permitted up to 1000 m above sea level; above that height, reduced air density can lower cooling performance and may require current derating. For feedback and control integration, the front panel provides an incremental encoder output and accepts a speed reference as an analog voltage. This arrangement supports connection to older CNC and PLC platforms that use straightforward analog command channels. The housing does not include a second encoder input, so applications that need multiple feedback channels must provide that function through external hardware.
Frequently Asked Questions about KDA 3.2-050-3-A0I-W1:
Q: What is the rated current capacity of the KDA 3.2-050-3-A0I-W1 spindle drive?
A: The KDA 3.2-050-3-A0I-W1 operates with a rated current of 50 A for demanding spindle drive applications.
Q: How is the KDA 3.2-050-3-A0I-W1 spindle drive cooled?
A: This model utilizes a mounted heatsink blower for forced cooling, ensuring efficient heat dissipation.
Q: What is the required AC source for the heatsink blower on the KDA 3.2-050-3-A0I-W1?
A: The AC source for the heatsink blower on this spindle drive is 220V at 50-60Hz.
Q: What is the permissible ambient temperature range for the KDA 3.2-050-3-A0I-W1?
A: The KDA 3.2-050-3-A0I-W1 operates properly within an ambient temperature range of 5 to 45 degrees Celsius.
Q: What type of speed command value input does the KDA 3.2-050-3-A0I-W1 use?
A: This spindle drive transmits speed command values via analogue inputs.
