Bolt Circle Diameter Calculator

✖Outside Diameter of Gasket is in which a mechanical seal which fills the space between two or more mating surfaces, generally to prevent leakage.ⓘ Outside Diameter of Gasket [G_o]			+10% -10%
✖Nominal Bolt Diameter is the diameter equal to the external diameter of the threads or the overall diameter of the part.ⓘ Nominal Bolt Diameter [d_b]			+10% -10%

✖Bolt Circle Diameter is the diameter of the circle on which the holes will be evenly distributed.ⓘ Bolt Circle Diameter [B]

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Formula

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Bolt Circle Diameter

Formula

`"B" = "G"_{"o"}+(2*"d"_{"b"})+12`

Example

`"4.112m"="1.1m"+(2*"1.5m")+12`

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Bolt Circle Diameter Solution

STEP 0: Pre-Calculation Summary

Formula Used

Bolt Circle Diameter = Outside Diameter of Gasket+(2*Nominal Bolt Diameter)+12
B = G_o+(2*d_b)+12
This formula uses 3 Variables

Variables Used

Bolt Circle Diameter - (Measured in Millimeter) - Bolt Circle Diameter is the diameter of the circle on which the holes will be evenly distributed.
Outside Diameter of Gasket - (Measured in Millimeter) - Outside Diameter of Gasket is in which a mechanical seal which fills the space between two or more mating surfaces, generally to prevent leakage.
Nominal Bolt Diameter - (Measured in Millimeter) - Nominal Bolt Diameter is the diameter equal to the external diameter of the threads or the overall diameter of the part.

STEP 1: Convert Input(s) to Base Unit

Outside Diameter of Gasket: 1.1 Meter --> 1100 Millimeter (Check conversion here)
Nominal Bolt Diameter: 1.5 Meter --> 1500 Millimeter (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

B = G_o+(2*d_b)+12 --> 1100+(2*1500)+12

Evaluating ... ...

B = 4112

STEP 3: Convert Result to Output's Unit

4.112 Meter --> No Conversion Required

FINAL ANSWER

4.112 Meter <-- Bolt Circle Diameter

(Calculation completed in 00.004 seconds)

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< 17 Design of Pressure Vessel Subjected to Internal Pressure Calculators

Coefficient Value for Thickness of Flange

Go Coefficient Value for Thickness of Flange = ((1)/((0.3)+(1.5*Maximum Bolt Loads*Radial Distance)/(Hydrostatic End Force in Gasket Seal*Diameter of Gasket at Load Reaction)))

Gasket Factor

Go Gasket Factor = (Total Fastener Force-Inside Area of Gasket*Test Pressure)/(Gasket Area*Test Pressure)

Longitudinal Stress (Axial Stress) in Cylindrical Shell

Go Longitudinal Stress for Cylindrical Shell = (Internal Pressure given Longitudinal Stress*Mean Diameter of Shell)/4*Thickness of Cylindrical Shell

Internal Presure of Vessel given Longitudinal Stress

Go Internal Pressure given Longitudinal Stress = (4*Longitudinal Stress*Thickness of Cylindrical Shell)/(Mean Diameter of Shell)

Wall Thickness of Pressure Vessel given Longitudinal Stress

Go Thickness of Shell for Longitudinal Stress = (Internal Pressure for Vessel*Mean Diameter of Shell)/(4*Longitudinal Stress)

Wall Thickness of Cylindrical Shell Given Hoop Stress

Go Thickness of Shell for Hoop Stress = (2*Internal Pressure given Hoop Stress*Mean Diameter of Shell)/Circumferential Stress

Internal Pressure of Cylindrical Vessel given Hoop Stress

Go Internal Pressure given Hoop Stress = (2*Circumferential Stress*Thickness of Cylindrical Shell)/(Mean Diameter of Shell)

Circumferential Stress (Hoop Stress) in Cylinderical Shell

Go Circumferential Stress = (Internal Pressure for Vessel*Mean Diameter of Shell)/2*Thickness of Cylindrical Shell

Maximum Bolt Spacing

Go Maximum Bolt Spacing = 2*Nominal Bolt Diameter+(6*Thickness of Flange/Gasket Factor+0.5)

Hydrostatic End Force using Design Pressure

Go Hydrostatic End Force = (pi/4)*(Radial Distance^2)*Internal Pressure

Diameter of Gasket at Load Reaction

Go Diameter of Gasket at Load Reaction = Outside Diameter of Gasket-2*Effective Gasket Seating Width

Effective Thickness of Conical Head

Go Effective Thickness = Thickness of Conical Head*(cos(Apex Angle))

Hoop Strain

Go Hoop Strain = (Final Length-Initial Length)/(Initial Length)

Radial Distance from Gasket Load Reaction to Bolt Circle

Go Radial Distance = (Bolt Circle Diameter-Diameter of Gasket at Load Reaction)/2

Bolt Circle Diameter

Go Bolt Circle Diameter = Outside Diameter of Gasket+(2*Nominal Bolt Diameter)+12

Outside Diameter of Flange using Bolt Diameter

Go Outside Flange Diameter = Bolt Circle Diameter+2*Nominal Bolt Diameter+12

Minimum Bolt Spacing

Go Minimum Bolt Spacing = 2.5*Nominal Bolt Diameter

Bolt Circle Diameter Formula

Bolt Circle Diameter = Outside Diameter of Gasket+(2*Nominal Bolt Diameter)+12
B = G_o+(2*d_b)+12

What is Bolt?

A bolt is a form of threaded fastener with an external male thread requiring a matching pre-formed female thread such as a nut. Bolts are very closely related to screws.

How to Calculate Bolt Circle Diameter?

Bolt Circle Diameter calculator uses Bolt Circle Diameter = Outside Diameter of Gasket+(2*Nominal Bolt Diameter)+12 to calculate the Bolt Circle Diameter, Bolt Circle Diameter is the diameter of the circle that goes through the center of all of the bolts on a chainring. Bolt Circle Diameter is denoted by B symbol.

How to calculate Bolt Circle Diameter using this online calculator? To use this online calculator for Bolt Circle Diameter, enter Outside Diameter of Gasket (G_o) & Nominal Bolt Diameter (d_b) and hit the calculate button. Here is how the Bolt Circle Diameter calculation can be explained with given input values -> 4.112 = 1.1+(2*1.5)+12.

FAQ

What is Bolt Circle Diameter?

Bolt Circle Diameter is the diameter of the circle that goes through the center of all of the bolts on a chainring and is represented as B = G_o+(2*d_b)+12 or Bolt Circle Diameter = Outside Diameter of Gasket+(2*Nominal Bolt Diameter)+12. Outside Diameter of Gasket is in which a mechanical seal which fills the space between two or more mating surfaces, generally to prevent leakage & Nominal Bolt Diameter is the diameter equal to the external diameter of the threads or the overall diameter of the part.

How to calculate Bolt Circle Diameter?

Bolt Circle Diameter is the diameter of the circle that goes through the center of all of the bolts on a chainring is calculated using Bolt Circle Diameter = Outside Diameter of Gasket+(2*Nominal Bolt Diameter)+12. To calculate Bolt Circle Diameter, you need Outside Diameter of Gasket (G_o) & Nominal Bolt Diameter (d_b). With our tool, you need to enter the respective value for Outside Diameter of Gasket & Nominal Bolt Diameter and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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