KDA 3.3-050-3-A00-U1
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The KDA 3.3-050-3-A00-U1 Spindle Drive from Bosch Rexroth Indramat's KDA Spindle Drives series delivers a rated output current of 50 Amps. With a continuous power of 14.2 kW, it operates at 3x400 V AC ±10% input voltage and uses internal air cooling. The unit weighs 23 kg and has dimensions of 430mm x 220mm x 310mm.
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Product Description:
As a member of the KDA family, the Bosch Rexroth Indramat KDA 3.3-050-3-A00-U1 is an industrial advanced spindle driver that accurately controls the spindle motors in the automation tasks.
Its continuous output current is 50 A, and its peak output current is 75 A, which makes it support challenging applications that need quick acceleration, high torque, or dynamic load fluctuations. The drive input is 3-phase 400V AC at a tolerance (+/10 percent) at a rated frequency of 50/60 Hz. It rectifies this to a three-phase high voltage 230V output, which is stable and can work with equipment using low voltages. Its continuous power output of 14.2 kW is what makes it suitable for heavy-duty spindles in CNC machines, as well as milling systems or other servo high-power applications. Through the use of an integrated heatsink blower powered by a 220 V AC supply, internal air cooling is accomplished. This guarantees effective heat transfer, which enables it to operate continuously under load without the need for an external chiller.
The unit has 24 V DC control voltage, logic, and signal processing. Speed control is very accurate, with speed control as low as 0.0005 rpm to full motor speed, which suits applications where positioning is critical, such as controlling the C-axis spindle. The drive accommodates analog control and can be used alongside other Bosch Rexroth systems of automation. With an IP10 certification, the drive is suitable for enclosed cabinet-type settings and may be panel mounted. It can work between a range of 0°C to 45°C temperatures, and has an altitude rating of 1000 meters without derating. It has dimensions 430 mm (W) x 220 mm (H) x 310 mm (D), and the weight is about 23 kg.
Frequently Asked Questions about KDA 3.3-050-3-A00-U1:
Q: What is the power and current rating of the KDA 3.3-050-3-A00-U1?
A: The KDA 3.3-050-3-A00-U1 delivers 14.2 kW of continuous power, with a continuous output current of 50 A and a peak current of 75 A.
Q: What input voltage does the KDA 3.3-050-3-A00-U1 require?
A: It operates on a 3-phase 400 V AC ±10% at 50/60 Hz and outputs 230 V across three phases for driving AC spindle motors.
Q: How is the KDA 3.3-050-3-A00-U1 cooled?
A: It uses internal air cooling via an integrated heatsink and blower system powered by 220 V AC, eliminating the need for external cooling.
Q: Where and how should the KDA 3.3-050-3-A00-U1 be installed?
A: The drive is panel-mounted, rated IP10, designed for enclosed control cabinets, and operates within 0°C to 45°C up to 1000 meters altitude without derating.
Q: What kind of speed control does the KDA 3.3-050-3-A00-U1 support?
A: The unit supports extremely precise speed control—down to 0.0005 rpm—making it ideal for high-precision tasks like C-axis spindle positioning.
