Motor Torque, Starting Torque, Stall Torque, Load Torque

AI Thread Summary
Starting torque is the initial torque required to overcome inertia and friction to begin movement, while stall torque is the maximum torque at which a motor can operate before it stops. When motor torque equals load torque, the mass will move at a constant speed, but if motor torque equals stall torque, the motor will not be able to move the load. Running torque is typically less than starting torque and maintains the load at a steady speed. Understanding these torque definitions is crucial for proper motor operation and safety to prevent overheating or damage.
coolrox86
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Hi, I am new here.

I have some problems with the engine motor. What is the difference between starting torque (or locked up torque) and stall torque?

What happen if motor torque = load torque? Will the mass move up with constant speed or stay stanionary? motor torque = stall torque = load torque?

Thanks for any help and suggestion! :smile:

Regards
coolrox
 
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I hope this works
 

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Assuming you are asking about an electric motor...

Starting torque = torque reqd to overcome friction, load inertia, stiction, etc., and accelerate the load inertia. This is meant to be a transient value.

Running torque or load torque = less than starting torque, keeps the previously accelerated inertia + load at steady state speed.

Stall torque = torque value that will slow down and stop your motor + load. Hopefully you have properly wired your motor protection devices and they will kick in. Otherwise the motor will draw a lot of current, heat up, catch fire, burn your building down.
 
i have a 7.5 hp electric dc motor
what is the torque produced at 1000rpm
 
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