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Sproket Diameter of Pitch Circle is the diameter of the circle that passes through the pitch point of the sprocket wheel's teeth. Check FAQs
Ds=da-P(1-(1.6z))+2R
Ds - Sproket Diameter of Pitch Circle?da - Top Diameter of Sprocket Wheel?P - Pitch of Chain?z - Number of Teeth on Sprocket?R - Roller Radius of Chain?

Pitch Circle Diameter given Top Diameter of Sprocket Wheel Example

With values
With units
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Here is how the Pitch Circle Diameter given Top Diameter of Sprocket Wheel equation looks like with Values.

Here is how the Pitch Circle Diameter given Top Diameter of Sprocket Wheel equation looks like with Units.

Here is how the Pitch Circle Diameter given Top Diameter of Sprocket Wheel equation looks like.

131Edit=139.1224Edit-22Edit(1-(1.618Edit))+25.961Edit
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Pitch Circle Diameter given Top Diameter of Sprocket Wheel Solution

Follow our step by step solution on how to calculate Pitch Circle Diameter given Top Diameter of Sprocket Wheel?

FIRST Step Consider the formula
Ds=da-P(1-(1.6z))+2R
Next Step Substitute values of Variables
Ds=139.1224mm-22mm(1-(1.618))+25.961mm
Next Step Convert Units
Ds=0.1391m-0.022m(1-(1.618))+20.006m
Next Step Prepare to Evaluate
Ds=0.1391-0.022(1-(1.618))+20.006
Next Step Evaluate
Ds=0.130999955555556m
Next Step Convert to Output's Unit
Ds=130.999955555556mm
LAST Step Rounding Answer
Ds=131mm

Pitch Circle Diameter given Top Diameter of Sprocket Wheel Formula Elements

Variables
Sproket Diameter of Pitch Circle
Sproket Diameter of Pitch Circle is the diameter of the circle that passes through the pitch point of the sprocket wheel's teeth.
Symbol: Ds
Measurement: LengthUnit: mm
Note: Value should be greater than 0.
Top Diameter of Sprocket Wheel
Top Diameter of Sprocket Wheel is the maximum diameter of the sprocket wheel, which is the distance across the wheel passing through its center.
Symbol: da
Measurement: LengthUnit: mm
Note: Value should be greater than 0.
Pitch of Chain
Pitch of Chain is the distance between the centers of two consecutive teeth of a sprocket wheel, used to determine the size of the chain.
Symbol: P
Measurement: LengthUnit: mm
Note: Value should be greater than 0.
Number of Teeth on Sprocket
Number of teeth on sprocket is the total count of teeth present on the circumference of the sprocket wheel, which affects the gear ratio and overall mechanism.
Symbol: z
Measurement: NAUnit: Unitless
Note: Value should be greater than 0.
Roller Radius of Chain
Roller Radius of Chain Sprocket Wheel is the radius of the roller of the chain sprocket wheel, which is a critical component in a bicycle's gear system.
Symbol: R
Measurement: LengthUnit: mm
Note: Value should be greater than 0.

Other Formulas to find Sproket Diameter of Pitch Circle

​Go Pitch Circle Diameter given Pitch
Ds=Psin(3.035z)
​Go Pitch Circle Diameter given Root Diameter of Sprocket Wheel
Ds=Df+2ri
​Go Pitch Circle Diameter given Average Velocity of Chain
Ds=v60πN

Other formulas in Proportions of the Sprocket Wheel category

​Go Pitch Angle of Sprocket
α=360z57.24
​Go Number of Teeth on Sprocket given Pitch Angle of Sprocket
z=360α(180π)
​Go Top Diameter of Sprocket Wheel
da=Ds+P(1-(1.6z))-2R
​Go Root Diameter of Sprocket Wheel
Df=Ds-2ri

How to Evaluate Pitch Circle Diameter given Top Diameter of Sprocket Wheel?

Pitch Circle Diameter given Top Diameter of Sprocket Wheel evaluator uses Sproket Diameter of Pitch Circle = Top Diameter of Sprocket Wheel-Pitch of Chain*(1-(1.6/Number of Teeth on Sprocket))+2*Roller Radius of Chain to evaluate the Sproket Diameter of Pitch Circle, Pitch Circle Diameter given Top Diameter of Sprocket Wheel formula is defined as a measure of the diameter of the circle passing through the centers of the chain wheel teeth, which is essential in designing and manufacturing sprockets and chain drives, ensuring proper meshing and smooth operation of the machinery. Sproket Diameter of Pitch Circle is denoted by Ds symbol.

How to evaluate Pitch Circle Diameter given Top Diameter of Sprocket Wheel using this online evaluator? To use this online evaluator for Pitch Circle Diameter given Top Diameter of Sprocket Wheel, enter Top Diameter of Sprocket Wheel (da), Pitch of Chain (P), Number of Teeth on Sprocket (z) & Roller Radius of Chain (R) and hit the calculate button.

FAQs on Pitch Circle Diameter given Top Diameter of Sprocket Wheel

What is the formula to find Pitch Circle Diameter given Top Diameter of Sprocket Wheel?
The formula of Pitch Circle Diameter given Top Diameter of Sprocket Wheel is expressed as Sproket Diameter of Pitch Circle = Top Diameter of Sprocket Wheel-Pitch of Chain*(1-(1.6/Number of Teeth on Sprocket))+2*Roller Radius of Chain. Here is an example- 131078 = 0.1391224-0.022*(1-(1.6/18))+2*0.005961.
How to calculate Pitch Circle Diameter given Top Diameter of Sprocket Wheel?
With Top Diameter of Sprocket Wheel (da), Pitch of Chain (P), Number of Teeth on Sprocket (z) & Roller Radius of Chain (R) we can find Pitch Circle Diameter given Top Diameter of Sprocket Wheel using the formula - Sproket Diameter of Pitch Circle = Top Diameter of Sprocket Wheel-Pitch of Chain*(1-(1.6/Number of Teeth on Sprocket))+2*Roller Radius of Chain.
What are the other ways to Calculate Sproket Diameter of Pitch Circle?
Here are the different ways to Calculate Sproket Diameter of Pitch Circle-
  • Sproket Diameter of Pitch Circle=Pitch of Chain/sin(3.035/Number of Teeth on Sprocket)OpenImg
  • Sproket Diameter of Pitch Circle=Root Diameter of Sprocket Wheel+2*Roller Seating RadiusOpenImg
  • Sproket Diameter of Pitch Circle=Average Chain Velocity*60/(pi*Speed of Chain Drive Shaft in RPM)OpenImg
Can the Pitch Circle Diameter given Top Diameter of Sprocket Wheel be negative?
No, the Pitch Circle Diameter given Top Diameter of Sprocket Wheel, measured in Length cannot be negative.
Which unit is used to measure Pitch Circle Diameter given Top Diameter of Sprocket Wheel?
Pitch Circle Diameter given Top Diameter of Sprocket Wheel is usually measured using the Millimeter[mm] for Length. Meter[mm], Kilometer[mm], Decimeter[mm] are the few other units in which Pitch Circle Diameter given Top Diameter of Sprocket Wheel can be measured.
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