Anshika Arya
National Institute Of Technology (NIT), Hamirpur
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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

## < 2 Other formulas that calculate the same Output

Circular pitch
Circular pitch=(pi*Diameter of the pitch circle)/Number of teeth on the wheel GO
Circular pitch
Circular pitch=pi*Module GO

### Circular pitch for helical gears Formula

Circular pitch=Normal pitch/cos(Helix Angle)
More formulas
Circular pitch GO
Module GO
Diametral pitch in terms of circular pitch GO
Diametral Pitch GO
Tangential force on gear shaft GO
Normal force on gear shaft GO
Torque exerted on the gear shaft GO
Length of path of contact GO
Length of path of recess GO
Length of path of approach GO
Circular pitch GO
Length of arc of contact GO
Contact ratio GO
Radius of base circle of wheel GO
Radius of base circle of pinion GO
Maximum length of arc of approach GO
Maximum length of path of contact GO
Maximum length of path of recess GO
Maximum length of path of approach GO
Gear ratio GO
Gear ratio GO
Minimum number of teeth on the pinion in order to avoid interference GO
Minimum number of teeth on the pinion in order to avoid interference if pinion and wheel have equal teeth GO
Minimum number of teeth on the pinion in order to avoid interference GO
Minimum number of teeth on the wheel in order to avoid interference if pinion and wheel have equal teeth GO
Minimum number of teeth on the pinion in order to avoid interference in terms of addendum of wheels GO
Minimum number of teeth on a pinion for involute rack in order to avoid interference GO
Axial thrust on driven GO
Axial thrust on driver GO
Maximum efficiency of spiral gears GO
Efficiency of spiral gears GO
Efficiency of spiral gears GO
Work output on the driven GO
Work output on the driver GO
Force applied tangentially on the driver GO
Resisting force acting tangentially on the driven GO
Shaft angle GO

## What is circular pitch and circular thickness?

Circular pitch is the distance along the pitch circle or pitch line between corresponding profiles of adjacent teeth. Circular thickness (t) is the length of arc between the two sides of a gear tooth on the pitch circle, unless otherwise specified.

## How to Calculate Circular pitch for helical gears?

Circular pitch for helical gears calculator uses Circular pitch=Normal pitch/cos(Helix Angle) to calculate the Circular pitch, Circular pitch for helical gears is the distance along the pitch circle or pitch line between corresponding profiles of adjacent teeth. Circular pitch and is denoted by Pc symbol.

How to calculate Circular pitch for helical gears using this online calculator? To use this online calculator for Circular pitch for helical gears, enter Helix Angle (α) and Normal pitch (PN) and hit the calculate button. Here is how the Circular pitch for helical gears calculation can be explained with given input values -> 0.010392 = 0.009/cos(30).

### FAQ

What is Circular pitch for helical gears?
Circular pitch for helical gears is the distance along the pitch circle or pitch line between corresponding profiles of adjacent teeth and is represented as Pc=PN/cos(α) or Circular pitch=Normal pitch/cos(Helix Angle). 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 Normal pitch is the distance between similar faces of adjacent teeth, along a helix on the pitch cylinder normal to the teeth.
How to calculate Circular pitch for helical gears?
Circular pitch for helical gears is the distance along the pitch circle or pitch line between corresponding profiles of adjacent teeth is calculated using Circular pitch=Normal pitch/cos(Helix Angle). To calculate Circular pitch for helical gears, you need Helix Angle (α) and Normal pitch (PN). With our tool, you need to enter the respective value for Helix Angle and Normal pitch 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 Circular pitch?
In this formula, Circular pitch uses Helix Angle and Normal pitch. We can use 2 other way(s) to calculate the same, which is/are as follows -
• Circular pitch=(pi*Diameter of the pitch circle)/Number of teeth on the wheel
• Circular pitch=pi*Module
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