High-torque IE3 motors are designed for applications that demand a strong starting moment when the shaft begins to turn and while carrying heavy loads. On lines that move under load, such as conveyors, mixers, crushers and mills, torque capacity is the deciding feature of motor selection.

The Relationship Between Torque and Speed

At the same power, a lower-speed motor produces higher torque. A 6-pole IE3 motor at 1000 rpm offers a stronger starting and running moment than a 2-pole unit. For this reason, applications needing high torque favour the lower-speed pole counts.

Starting and Breakaway Torque

Restarting a line that has stopped under heavy load requires a starting moment above the motor's rated torque. The rotor design of IE3 motors meets this moment while limiting overheating and efficiency loss, and is paired with a soft starter where needed.

Mechanical Strength and Housing Choice

High torque places heavy mechanical load on the shaft and bearings. A cast iron housing gives resistance to vibration and impact in these applications, while IP55 protection and Class F insulation support safe operation in demanding environments.

DRG Motor for High-Torque Applications

DRG Motor offers IE3 motors across a wide power and speed range for lines that demand high torque. Engineering support and current quotations help determine the right pole count based on the application's breakaway moment and load character.