Kethavath Srinath
Osmania University (OU), Hyderabad
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Urvi Rathod
Vishwakarma Government Engineering College (VGEC), Ahmedabad
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11 Other formulas that you can solve using the same Inputs

Efficiency of screw jack when screw friction as well as collar friction considered
Efficiency =(Weight*tan(Helix Angle)*Mean diameter of Screw)/((Weight of Load*tan(Helix Angle+Limiting angle of friction)*Mean diameter of Screw)+(Coefficient of friction for collar*Weight of Load*Mean radius of collar)) GO
Total torque required to overcome friction in rotating a screw
Torque=(Weight of Load*tan(Helix Angle+Limiting angle of friction)*Mean diameter of Screw/2)+(Coefficient of friction for collar*Weight of Load*Mean radius of collar) GO
Force required to lower the load by a screw jack when weight of load, helix angle and coefficient of friction is known
Force=Weight of Load*((Coefficient of Friction*cos(Helix Angle))-sin(Helix Angle))/(cos(Helix Angle)+(Coefficient of Friction*sin(Helix Angle))) GO
Force at circumference of the screw when weight of load, helix angle and coefficient of friction is known
Force=Weight*((sin(Helix Angle)+(Coefficient of Friction*cos(Helix Angle)))/(cos(Helix Angle)-(Coefficient of Friction*sin(Helix Angle)))) GO
Torque required to overcome friction between screw and nut(lowering load)
Torque=Weight of Load*tan(Limiting angle of friction-Helix Angle)*Mean diameter of Screw/2 GO
Torque required to overcome friction between screw and nut(lowering load)
Torque=Weight of Load*tan(Limiting angle of friction-Helix Angle)*Mean diameter of Screw/2 GO
Torque required to overcome friction between screw and nut
Torque=Weight of Load*tan(Helix Angle+Limiting angle of friction)*Mean diameter of Screw/2 GO
Efficiency of screw jack when only screw friction considered
Efficiency =tan(Helix Angle)/tan(Helix Angle+Limiting angle of friction) GO
Force required to lower the load by a screw jack when weight of load, helix angle and limiting angle is known
Force=Weight of Load*tan(Limiting angle of friction-Helix Angle) GO
Force at circumference of the screw when weight of load, helix angle and limiting angle is known
Force=Weight of Load*tan(Helix Angle+Limiting angle of friction) GO
Ideal effort to raise the load by screw jack
Ideal Effort=Weight of Load*tan(Helix Angle) GO

11 Other formulas that calculate the same Output

Coefficient of Friction When Torque is Given
Coefficient of Friction=(2*Torque-(Force*Mean diameter of screw*tan(Helix Angle)))/(Force*Mean diameter of screw+2*Torque*tan(Helix Angle)) GO
Coefficient of Friction When Torque Required in Lowering a Load is Given
Coefficient of Friction=(2*Torque+Force*Mean diameter of screw*tan(Helix Angle))/(Force*Mean diameter of screw-2*Torque*tan(Helix Angle)) GO
Coefficient of friction for given thrust force, cutting force and normal rake angle
Coefficient of Friction=(Thrust force+Cutting Force*tan(normal rake angle))/(Cutting Force-Thrust force*tan(normal rake angle)) GO
Coefficient of Friction (using forces)
Coefficient of Friction=(Centripetal Force*tan(Theta)+Tangential Force)/(Centripetal Force-Tangential Force*tan(Theta)) GO
Coefficient of Friction When Efficiency of Square Threaded Screw is Given
Coefficient of Friction=(tan(Helix Angle)*(1-Efficiency ))/(tan(Helix Angle)*tan(Helix Angle)+Efficiency ) GO
Coefficient of Friction When Effort is Given
Coefficient of Friction=(Effort-Force*tan(Helix Angle))/(Force+Effort*tan(Helix Angle)) GO
Coefficient of Friction When Load is Given
Coefficient of Friction=(Effort+tan(Helix Angle)*Force)/(Force-Effort*tan(Helix Angle)) GO
Coefficient of friction for given forces normal and along the tool rake face
Coefficient of Friction=Force of friction/Normal Force GO
Coefficient of Friction
Coefficient of Friction=Limiting Force/Normal reaction GO
Coefficient of Friction between the cylinder and the surface of inclined plane if cylinder is rolling without slipping down
Coefficient of Friction=(tan(Angle of Inclination))/3 GO
Coefficient of friction for given friction angle
Coefficient of Friction=tan(Angle of friction) GO

Coefficient of Friction When Efficiency of a Trapezoidal Threaded Screw is Given Formula

Coefficient of Friction=tan(Helix Angle*pi/180)*(1-Efficiency )/sec(14.5*pi/180)*(Efficiency +tan(Helix Angle*pi/180)*tan(Helix Angle*pi/180))
μ=tan(α*pi/180)*(1-n)/sec(14.5*pi/180)*(n+tan(α*pi/180)*tan(α*pi/180))
More formulas
Helix Angle When Torque Required in Lifting a Load With Acme Screw Thread is Given GO
Coefficient of Friction When Torque Required in Lifting a Load with Acme Tread is Given GO
Load When Torque Required in Lifting a Load with Acme Screw Thread is Given GO
Torque Required in Lifting a Load With Acme Screw Thread GO
Coefficient of Friction When Effort is Given GO
Helix Angle When Effort Required in Lifting a Load with Acme Screw Thread is Given GO
Load When Effort Required in Lifting a Load with Acme Screw Thread is Given GO
Effort Required in Lifting a Load with Acme Thread GO
Helix Angle When Torque Required in Lowering a Load is Given GO
Coefficient of Friction When Torque Required in Lowering a Load is Given GO
Mean Diameter of Screw When Torque Required in Lowering a Load is Given GO
Load When Torque Required in Lowering a Load is Given GO
Helix Angle When Effort Required in Lowering a Load is Given GO
Coefficient of Friction When Effort in Lowering a Load is Given GO
Load When Effort Required in Lowering a Load is Given GO
Effort Required in Lowering a Load GO
Torque Required in Lowering a Load GO
Efficiency of Acme Threaded Screw GO

What are the main factors that determine Screw Efficiency?

Two main factors play a part in determining a screw’s efficiency: the lead angle of the screw and the amount of friction in the screw assembly. Efficiency is the primary indicator of whether a screw will back drive or not the higher the efficiency, the more likely the screw is to back drive when an axial force is applied.

How to Calculate Coefficient of Friction When Efficiency of a Trapezoidal Threaded Screw is Given?

Coefficient of Friction When Efficiency of a Trapezoidal Threaded Screw is Given calculator uses Coefficient of Friction=tan(Helix Angle*pi/180)*(1-Efficiency )/sec(14.5*pi/180)*(Efficiency +tan(Helix Angle*pi/180)*tan(Helix Angle*pi/180)) to calculate the Coefficient of Friction, The Coefficient of Friction When Efficiency of a Trapezoidal Threaded Screw is Given formula is defined as the ratio of the tangential force that is needed to start or to maintain uniform relative motion between two contacting surfaces to the perpendicular force holding them in contact. Coefficient of Friction and is denoted by μ symbol.

How to calculate Coefficient of Friction When Efficiency of a Trapezoidal Threaded Screw is Given using this online calculator? To use this online calculator for Coefficient of Friction When Efficiency of a Trapezoidal Threaded Screw is Given, enter Helix Angle (α) and Efficiency (n) and hit the calculate button. Here is how the Coefficient of Friction When Efficiency of a Trapezoidal Threaded Screw is Given calculation can be explained with given input values -> -3.362134 = tan(0.5235987755982*pi/180)*(1-20)/sec(14.5*pi/180)*(20+tan(0.5235987755982*pi/180)*tan(0.5235987755982*pi/180)).

FAQ

What is Coefficient of Friction When Efficiency of a Trapezoidal Threaded Screw is Given?
The Coefficient of Friction When Efficiency of a Trapezoidal Threaded Screw is Given formula is defined as the ratio of the tangential force that is needed to start or to maintain uniform relative motion between two contacting surfaces to the perpendicular force holding them in contact and is represented as μ=tan(α*pi/180)*(1-n)/sec(14.5*pi/180)*(n+tan(α*pi/180)*tan(α*pi/180)) or Coefficient of Friction=tan(Helix Angle*pi/180)*(1-Efficiency )/sec(14.5*pi/180)*(Efficiency +tan(Helix Angle*pi/180)*tan(Helix Angle*pi/180)). Helix Angle denotes the standard pitch circle unless otherwise specified. Application of the helix angle typically employs a magnitude ranging from 15° to 30° for helical gears, with 45° capping the safe operation limit and The efficiency of an electric motor is defined as the ratio of usable shaft power to electric input power.
How to calculate Coefficient of Friction When Efficiency of a Trapezoidal Threaded Screw is Given?
The Coefficient of Friction When Efficiency of a Trapezoidal Threaded Screw is Given formula is defined as the ratio of the tangential force that is needed to start or to maintain uniform relative motion between two contacting surfaces to the perpendicular force holding them in contact is calculated using Coefficient of Friction=tan(Helix Angle*pi/180)*(1-Efficiency )/sec(14.5*pi/180)*(Efficiency +tan(Helix Angle*pi/180)*tan(Helix Angle*pi/180)). To calculate Coefficient of Friction When Efficiency of a Trapezoidal Threaded Screw is Given, you need Helix Angle (α) and Efficiency (n). With our tool, you need to enter the respective value for Helix Angle and Efficiency and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
How many ways are there to calculate Coefficient of Friction?
In this formula, Coefficient of Friction uses Helix Angle and Efficiency . We can use 11 other way(s) to calculate the same, which is/are as follows -
  • Coefficient of Friction=(tan(Angle of Inclination))/3
  • Coefficient of Friction=Limiting Force/Normal reaction
  • Coefficient of Friction=(Centripetal Force*tan(Theta)+Tangential Force)/(Centripetal Force-Tangential Force*tan(Theta))
  • Coefficient of Friction=tan(Angle of friction)
  • Coefficient of Friction=Force of friction/Normal Force
  • Coefficient of Friction=(Thrust force+Cutting Force*tan(normal rake angle))/(Cutting Force-Thrust force*tan(normal rake angle))
  • Coefficient of Friction=(Effort-Force*tan(Helix Angle))/(Force+Effort*tan(Helix Angle))
  • Coefficient of Friction=(2*Torque-(Force*Mean diameter of screw*tan(Helix Angle)))/(Force*Mean diameter of screw+2*Torque*tan(Helix Angle))
  • Coefficient of Friction=(Effort+tan(Helix Angle)*Force)/(Force-Effort*tan(Helix Angle))
  • Coefficient of Friction=(2*Torque+Force*Mean diameter of screw*tan(Helix Angle))/(Force*Mean diameter of screw-2*Torque*tan(Helix Angle))
  • Coefficient of Friction=(tan(Helix Angle)*(1-Efficiency ))/(tan(Helix Angle)*tan(Helix Angle)+Efficiency )
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