KDA 3.1-150-3-D00-W1
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The KDA 3.1-150-3-D00-W1 by Bosch Rexroth Indramat comes from the KDA Spindle Drives series and features internal air cooling with a built-in blower. It supports both resolver and encoder feedback, operates at a rated DC bus voltage of 300 V, and has a continuous current of 150 A. The unit weighs approximately 17 kg.
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Product Description:
The Bosch Rexroth's KDA 3.1-150-3-D00-W1 is a modular spindle drive unit designed for CNC machine tools used in industrial automation. It supports both standard spindle functions and C-axis positioning operations. This spindle drive provides precise control for asynchronous and frameless spindle motors.
The KDA 3.1-150-3-D00-W1 spindle drive operates using a 300 V DC power supply from the DC bus. It delivers a rated output current of 150 A and can maintain a continuous current supply of 90 A during extended operation. The internal control circuitry receives power from +24V DC at 1.6 A and ±15V DC at 160 mA. These supply lines enable the stable operation of the control logic and integrated systems. The KDA 3.1-150-3-D00-W1 spindle drive has a net weight of 17.4 kilograms. The external blower unit adds another 4.2 kilograms. However, the mechanical mounting kit contributes 1.7 kilograms. The spindle drive handles its cooling through an external LE4-220V blower system. It is connected to a 220V AC supply. The blower pushes air directly through the heatsink to keep internal temperatures within safe limits. The required airflow is 32 liters per second, with a static pressure of 30 pascals. Air velocity over the heatsink should be maintained between 3 and 4 meters per second to prevent thermal buildup. It is essential to use clean, filtered air to avoid dust accumulation or thermal shutdown.
The KDA 3.1-150-3-D00-W1 spindle drive must be mounted in a vertical position using the M1-KD frame for installation. The grounding bolts must be installed at the top. A protective ground connection with a minimum 10 mm² cross-section cable is required for electrical safety. The drive is built to maintain electrical, thermal, and mechanical stability under continuous and demanding machining conditions.
Frequently Asked Questions about KDA 3.1-150-3-D00-W1:
Q: How does KDA 3.1-150-3-D00-W1 spindle drive support thermal regulation?
A: The KDA 3.1-150-3-D00-W1 spindle drive uses an LE4-220V external blower system. Airflow maintains heatsink velocity between 3–4 m/s for optimal thermal stability.
Q: Why is airflow quality critical in the KDA 3.1-150-3-D00-W1 spindle drive?
A: The KDA 3.1-150-3-D00-W1 spindle drive must receive clean, filtered air. Contaminated airflow risks thermal buildup, affecting control reliability and hardware longevity.
Q: What motor types can KDA 3.1-150-3-D00-W1 spindle drive control?
A: The KDA 3.1-150-3-D00-W1 spindle drive supports asynchronous and frameless spindles. This enables versatile CNC applications requiring precision or high-torque spindle response.
Q: How is continuous load handled in the KDA 3.1-150-3-D00-W1 spindle drive?
A: The KDA 3.1-150-3-D00-W1 spindle drive maintains a 90 A continuous current supply. This enables sustained performance in high-load, multi-axis CNC machining operations.
Q: How should the KDA 3.1-150-3-D00-W1 spindle drive be installed?
A: The KDA 3.1-150-3-D00-W1 spindle drive requires vertical M1-KD frame mounting. Proper orientation and grounding ensure mechanical alignment and electrical safety compliance.
