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Motor Torque, Starting Torque, Stall Torque, Load Torque

by coolrox86
Tags: load, motor, stall, starting, torque
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Nov6-11, 03:43 PM
P: 1
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!

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Jun9-12, 02:57 AM
P: 4
I hope this works
Attached Files
File Type: pdf AG09 (Speed Torque Curves).pdf (135.4 KB, 47 views)
Jun9-12, 08:57 AM
P: 154
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.

Jul7-12, 08:38 AM
P: 2
Motor Torque, Starting Torque, Stall Torque, Load Torque

i have a 7.5 hp electric dc motor
what is the torque produced at 1000rpm

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