# Torque Calculation

1. Feb 19, 2009

1. The problem statement, all variables and given/known data

Need to find input torque, output torque and input torque (omega) all NM

Data i have is

Input RPM = 9700
Output RPM = 1950

GEAR 1 = 12, 2 = 40, 3=30, 4=20 (Radius) with module 2 (x 2 for diameter)

Power = 2.3Kw

2. Relevant equations

Turn power to H.P giving 3.083 H.P

Use

(63025 * H.P) / R.P.M = T

T = 20.1Nm

Ang Velocity

V(omega)input = R.P.M in * 2pi/60 = rad/s

V(omega)output = R.P.M out * 2pi/60 = rad/s

T(omega) in = V(omega)in * Torque

3. The attempt at a solution

I would say the torque is 20.1Nm

I am getting confused with these torques,

Situation is a 2 stage gearbox, and torques need to be found, including angular torque, but cant seem to find the formulas i really need.

Pretty simple i am sure, but its not clicking for me right now.

Last edited: Feb 19, 2009
2. Feb 23, 2009

### Dr.D

We have talked about this one before, Herpamad. Why do you continue to post it?

3. Feb 25, 2009