Gear Reducer Formulas

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Gear Output Torque

M_o = M_i r μ 

where 

M_o = output torque (in. lb.- ft)

M_i = input torque (in. lb.- ft)

r = gear reducer ratio

μ = gear reduces efficiency (%)

Gear Output Speed

S_o = S_i  μ / r 

where 

S_o = output speed (rpm)

S_i = input speed (rpm)

Gear Output Horsepower

P_o = P_i  μ 

where 

P_o = output horsepower (hp)

P_i = input horsepower (hp)

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Related Topics

• Mechanics - Kinematics, forces, vectors, motion, momentum, energy and the dynamics of objects

Related Documents

• Gear Trains - A simple gear train is used to transmit rotary motion
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