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The Normal Module of Helical Gear is defined as the unit of size that indicates how big or small is the helical gear. Check FAQs
mn=dcos(ψ)z
mn - Normal Module of Helical Gear?d - Diameter of Pitch Circle of Helical Gear?ψ - Helix Angle of Helical Gear?z - Number of Teeth on Helical Gear?

Normal Module of Helical Gear given Pitch Circle Diameter Example

With values
With units
Only example

Here is how the Normal Module of Helical Gear given Pitch Circle Diameter equation looks like with Values.

Here is how the Normal Module of Helical Gear given Pitch Circle Diameter equation looks like with Units.

Here is how the Normal Module of Helical Gear given Pitch Circle Diameter equation looks like.

2.8904Edit=118Editcos(25Edit)37Edit
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Normal Module of Helical Gear given Pitch Circle Diameter Solution

Follow our step by step solution on how to calculate Normal Module of Helical Gear given Pitch Circle Diameter?

FIRST Step Consider the formula
mn=dcos(ψ)z
Next Step Substitute values of Variables
mn=118mmcos(25°)37
Next Step Convert Units
mn=0.118mcos(0.4363rad)37
Next Step Prepare to Evaluate
mn=0.118cos(0.4363)37
Next Step Evaluate
mn=0.00289038699649537m
Next Step Convert to Output's Unit
mn=2.89038699649537mm
LAST Step Rounding Answer
mn=2.8904mm

Normal Module of Helical Gear given Pitch Circle Diameter Formula Elements

Variables
Functions
Normal Module of Helical Gear
The Normal Module of Helical Gear is defined as the unit of size that indicates how big or small is the helical gear.
Symbol: mn
Measurement: LengthUnit: mm
Note: Value should be greater than 0.
Diameter of Pitch Circle of Helical Gear
Diameter of Pitch Circle of Helical Gear is the diameter of the pitch circle of a gear that touches the meshing gear's pitch circle.
Symbol: d
Measurement: LengthUnit: mm
Note: Value should be greater than 0.
Helix Angle of Helical Gear
Helix Angle of Helical Gear is the angle between any helical gear and an axial line on its right, circular cylinder, or cone.
Symbol: ψ
Measurement: AngleUnit: °
Note: Value should be greater than 0.
Number of Teeth on Helical Gear
Number of Teeth on Helical Gear is defined as the number of teeth (which mesh with another compatible toothed part to transmit or convert torque and speed) on a specimen or part under consideration.
Symbol: z
Measurement: NAUnit: Unitless
Note: Value should be greater than 0.
cos
Cosine of an angle is the ratio of the side adjacent to the angle to the hypotenuse of the triangle.
Syntax: cos(Angle)

Other Formulas to find Normal Module of Helical Gear

​Go Normal Module of Helical Gear
mn=mcos(ψ)
​Go Normal Module of Helical Gear given Center to Center Distance between Two Gears
mn=ac2cos(ψ)z1+z2
​Go Normal Module of Helical Gear given Virtual Number of Teeth
mn=dz'(cos(ψ)2)
​Go Normal Module of Helical Gear given Addendum Circle Diameter
mn=dazcos(ψ)+2

Other formulas in Core Design Parameters category

​Go Transverse Module of Helical Gear given Transverse Diametrical Pitch
m=1P
​Go Transverse Module of Helical Gear given Normal Module
m=mncos(ψ)
​Go Pitch Circle Diameter of Helical Gear
d=zmncos(ψ)
​Go Number of Teeth on Gear given Pitch Circle Diameter
z=dcos(ψ)mn

How to Evaluate Normal Module of Helical Gear given Pitch Circle Diameter?

Normal Module of Helical Gear given Pitch Circle Diameter evaluator uses Normal Module of Helical Gear = Diameter of Pitch Circle of Helical Gear*cos(Helix Angle of Helical Gear)/Number of Teeth on Helical Gear to evaluate the Normal Module of Helical Gear, Normal Module of Helical Gear given Pitch Circle Diameter formula is defined as the module of tooth datum orthogonal to the thread helix. Normal Module of Helical Gear is denoted by mn symbol.

How to evaluate Normal Module of Helical Gear given Pitch Circle Diameter using this online evaluator? To use this online evaluator for Normal Module of Helical Gear given Pitch Circle Diameter, enter Diameter of Pitch Circle of Helical Gear (d), Helix Angle of Helical Gear (ψ) & Number of Teeth on Helical Gear (z) and hit the calculate button.

FAQs on Normal Module of Helical Gear given Pitch Circle Diameter

What is the formula to find Normal Module of Helical Gear given Pitch Circle Diameter?
The formula of Normal Module of Helical Gear given Pitch Circle Diameter is expressed as Normal Module of Helical Gear = Diameter of Pitch Circle of Helical Gear*cos(Helix Angle of Helical Gear)/Number of Teeth on Helical Gear. Here is an example- 2890.387 = 0.118*cos(0.4363323129985)/37.
How to calculate Normal Module of Helical Gear given Pitch Circle Diameter?
With Diameter of Pitch Circle of Helical Gear (d), Helix Angle of Helical Gear (ψ) & Number of Teeth on Helical Gear (z) we can find Normal Module of Helical Gear given Pitch Circle Diameter using the formula - Normal Module of Helical Gear = Diameter of Pitch Circle of Helical Gear*cos(Helix Angle of Helical Gear)/Number of Teeth on Helical Gear. This formula also uses Cosine (cos) function(s).
What are the other ways to Calculate Normal Module of Helical Gear?
Here are the different ways to Calculate Normal Module of Helical Gear-
  • Normal Module of Helical Gear=Transverse Module of Helical Gear*cos(Helix Angle of Helical Gear)OpenImg
  • Normal Module of Helical Gear=Center to Center Distance of Helical Gears*(2*cos(Helix Angle of Helical Gear))/(Number of Teeth on 1st Helical Gear+Number of Teeth on 2nd Helical Gear)OpenImg
  • Normal Module of Helical Gear=Diameter of Pitch Circle of Helical Gear/Virtual Number of Teeth on Helical Gear*(cos(Helix Angle of Helical Gear)^2)OpenImg
Can the Normal Module of Helical Gear given Pitch Circle Diameter be negative?
No, the Normal Module of Helical Gear given Pitch Circle Diameter, measured in Length cannot be negative.
Which unit is used to measure Normal Module of Helical Gear given Pitch Circle Diameter?
Normal Module of Helical Gear given Pitch Circle Diameter is usually measured using the Millimeter[mm] for Length. Meter[mm], Kilometer[mm], Decimeter[mm] are the few other units in which Normal Module of Helical Gear given Pitch Circle Diameter can be measured.
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