Calculating Torque
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Calculating Torque
Hi guys/girls,
How do you calculate torque....??
I have been researching tapered shaft locking devices and have gotten differing results from suppliers when giving RPM and Shaft size........
These are the figures:
130 Hp (96Kw) driving a 40-50 mm shaft at 370 to 400 RPM.
I have been given 4100Nm and 2570Nm for the same equation...???!!!
Can someone run us through the calculations for calculating torque?
Cheers
edited to add this equation as I previously understood it....now I just have no idea
Mt = Nt/2 pi R
Nt being transmitted power
But I must lose something in converting the HP to a usable unit.
How do you calculate torque....??
I have been researching tapered shaft locking devices and have gotten differing results from suppliers when giving RPM and Shaft size........
These are the figures:
130 Hp (96Kw) driving a 40-50 mm shaft at 370 to 400 RPM.
I have been given 4100Nm and 2570Nm for the same equation...???!!!
Can someone run us through the calculations for calculating torque?
Cheers
edited to add this equation as I previously understood it....now I just have no idea
Mt = Nt/2 pi R
Nt being transmitted power
But I must lose something in converting the HP to a usable unit.
Join Date: Nov 2004
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Torque = Power / Rot_Speed But remember Rot_Speed must be in radians per second.
Using your numbers:
Torque = 96000 Watts / (385 RPM * (2*PI/60) ) = 2381 Nm
Don't forget that the input power is not the engine power, but the power transmitted by the shaft...
Mart
Using your numbers:
Torque = 96000 Watts / (385 RPM * (2*PI/60) ) = 2381 Nm
Don't forget that the input power is not the engine power, but the power transmitted by the shaft...
Mart
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Thanks Graviman,
Interesting that a decrease in RPM increases torque.........
"why is it so"
Don't have to go into too much detail, I'm sure 4-5 years at uni would answer the question.....
Interesting that a decrease in RPM increases torque.........
"why is it so"
Don't have to go into too much detail, I'm sure 4-5 years at uni would answer the question.....