RAC 4.3-300-460-A-01-W1 Bosch Rexroth Indramat
Wake Industrial LLC is not an authorized distributor of this product.
MPN: R911256118
No Tariffs On US Orders- Straightforward Pricing: No Rush Fees, No Credit Card Fees
The Bosch Rexroth Indramat RAC 4.3-300-460-A-01-W1 is an AC Main Spindle Drive Controller from the RAC Spindle Drive Controllers series. It has a continuous output of 93 kW, uses a built-in fan for cooling, and supports a rated current of 300 Amps. The controller weighs 150 kg and operates at a rated voltage of 3 x AC 400 V or 3 x AC 460 V.
To contact sales for pricing and lead time:
Payment Methods
Shipping Methods
Our Credentials
Product Description:
The RAC 4.3-300-460-A-01-W1 is an AC main spindle drive controller built by Bosch Rexroth Indramat and placed in the RAC Spindle Drive Controllers series. As a spindle inverter, it supplies regulated three-phase power to high-speed machine tool motors and returns excess kinetic energy to the DC bus during braking. The device interfaces with CNC or PLC hardware through a dedicated speed command channel, providing the power stage required for precise rotor speed regulation in automated machining centers.
This unit connects to plant mains at 3 × AC 400 V, 50 Hz, ±15 % or 3 × AC 460 V. It can deliver a continuous shaft power of 93 kW while returning 60 kW during steady regeneration. A rated phase current of 300 A is available, so supply conductors and protective devices must be sized for that current level. Operation up to +55 °C is permitted when the load is limited to 80% of nominal, extending the usable temperature range in enclosures with minimal cooling. Speed reference is accepted as a ±10 V analog signal, and the X4 nine-pole terminal provides parameter access and control wiring. An incremental encoder output is present for downstream monitoring, while no auxiliary encoder input or auxiliary bleeder is fitted.
Thermal management is handled by a built-in fan that directs airflow across the heat sinks, allowing the controller to sustain its identical peak and peak-regeneration capacities of 93 kW for short intervals without derating. The unit is protected to IP10, indicating finger-safe access while still requiring installation inside a suitable cabinet. With a shipping mass of 150 kg, adequate panel reinforcement and lifting support are necessary during integration, especially at elevations up to 1000 m where air density begins to drop. The humidity classification F supports use in production areas with elevated moisture, provided condensation is prevented.
Frequently Asked Questions about RAC 4.3-300-460-A-01-W1:
Q: What is the continuous output power rating for the RAC 4.3-300-460-A-01-W1 spindle drive controller?
A: The RAC 4.3-300-460-A-01-W1 delivers a continuous output power of 93 kW.
Q: What rated connection voltages are supported by the RAC 4.3-300-460-A-01-W1?
A: This controller supports input voltages of 3 x AC 400 V at 50 Hz with a +/-15% tolerance, or 3 x AC 460 V.
Q: What cooling method is used for the RAC 4.3-300-460-A-01-W1 spindle drive controller?
A: The cooling system for this controller utilizes a built-in fan to maintain operational temperature.
Q: What type of additional interface does the RAC 4.3-300-460-A-01-W1 feature?
A: The RAC 4.3-300-460-A-01-W1 is equipped with an incremental encoder output as an additional interface.
Q: What is the maximum ambient temperature allowed for the RAC 4.3-300-460-A-01-W1 at 80% rating?
A: The maximum ambient temperature for operating this unit at 80% rated power is +55 °C.
