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`T_"applied" = ( F * d_m ) / 2*(( "l" + pi * mu * d_m ) / (pi* d_m + mu * "l" ))`
Enter a value for all fields
The Lowering Torque for a Leadscrew calculator computes the torque required to lower a load with a square thread power screw assembly.
INSTRUCTIONS: Choose units and enter the following:
- (dm) This is the effective screw diameter
- (l) This is the lead
- (F) This is the force created when torque is applied
- (μ) This is the coefficient of friction between screw and nut
The Math / Science
The Leadscrew Lifting Torque equation is:
`T_R= F*d_m/2((l+pi*μ*d_m)/ (pi*d_m + μ*l)) `
where:
- TR is the torque required to lower a load using a Square Thread Power Screw assembly.
Friction Coefficients - dm is the mean thread diameter
- l is the lead
- F is the load
- μ is the coefficient of friction for thread