__Screw Torque Calculator:__

__Screw Torque Calculator:__

Enter the values of Force, F_{(N)}, material constant K, lubrication factor, L and nominal diameter d_{(m)} to determine the value of Screw torque, T_{s(N.m).}

__Screw Torque Formula:__

__Screw Torque Formula:__

Screw torque is an essential factor in mechanical engineering and construction, representing the rotational force applied to a screw to achieve the desired level of tightness without damaging the screw or the material.

Screw torque, T_{s(N.m) }in Newton metre is generated by multiplying Nut factor, a dimensionless coefficient representing the material constant K, Force F_{(N)} applied in Newton (N) and Nominal diameter, d_{(m)} of the screw in metres (m). The obtained value is multiplied by Lubrication factor L as a percentage, which is subtracted from 1.

Screw torque, T_{s(N.m)} = K * F_{(N)} * d_{(m)} * (1 – L / 100)

T_{s(N.m) }= Screw torque in Newton metre, N.m.

K = a dimensionless coefficient representing the material constant

F_{(N)} = Force applied in Newtons (N),

d_{(m) } = Nominal diameter in metre, m.

L = Lubrication factor.

__Screw Torque Calculation:__

__Screw Torque Calculation:__

1. A technician is installing a component using a screw that has a nominal diameter of 0.01 metres. The applied force is 900 Newtons, the nut factor K is estimated to be 0.25, and the screw is lubricated with a substance that provides a 20% reduction in friction. Calculate the torque needed to properly tighten this screw.

Given: K = 0.25, L = 20%, F_{(N)} = 900N, d_{(m) } = 0.01m.

Screw torque, T_{s(N.m)} = K * F_{(N)} * d_{(m)} * (1 – L / 100)

T_{s(N.m)} = 0.25 * 900 * 0.01 * (1 – 20/100)

T_{s(N.m)} = 1.8N.m.

2. During the assembly of a machine, it is necessary to apply a torque of 2 N.m to secure a screw with a nominal diameter of 0.008 metres. The nut factor K is 0.2, and the assembly is performed without the use of lubrication (0%). Calculate the force that needs to be applied to achieve this specific torque.

Given: K = 0.2, L = 0%, Ts_{(N.m)} = 2N.m, d_{(m) } = 0.008m.

Screw torque, T_{s(N.m)} = K * F_{(N)} * d_{(m)} * (1 – L / 100)

F_{(N) }= _{ }T_{s(N.m)} / K * d_{(m)} * (1 – L / 100)

F_{(N)} = 2 / 0.2 * 0.008 * (1-0)

F_{(N)} = 2 / 0.0016

F_{(N)} = 1250N.

__Calculating Lead Screw Efficiency and Required Lifting Torque:__

__Calculating Lead Screw Efficiency and Required Lifting Torque:__