Bearing Pressure at Fulcrum Pin of Rocker Arm Calculator

✖Force at Fulcrum Pin is the force acting onto the fulcrum pin (the pivot about which a lever turns) used as a joint at a fulcrum point.ⓘ Force at Fulcrum Pin [R_f]			+10% -10%
✖Diameter of Fulcrum Pin is the diameter of the pin used at the fulcrum joint.ⓘ Diameter of Fulcrum Pin [d₁]			+10% -10%
✖Length of Fulcrum Pin is the total length of the pin used at the fulcrum joint.ⓘ Length of Fulcrum Pin [l₁]			+10% -10%

✖Bearing Pressure for Fulcrum Pin is the compressive force acting on the contact area between two components of the pin having no relative motion between them.ⓘ Bearing Pressure at Fulcrum Pin of Rocker Arm [P_b]

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Formula

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Bearing Pressure at Fulcrum Pin of Rocker Arm

Formula

`"P"_{"b"} = ("R"_{"f"})/("d"_{"1"}*"l"_{"1"})`

Example

`"4.593548N/mm²"=("3560N")/("25mm"*"31mm")`

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Bearing Pressure at Fulcrum Pin of Rocker Arm Solution

STEP 0: Pre-Calculation Summary

Formula Used

Bearing Pressure for Fulcrum Pin = (Force at Fulcrum Pin)/(Diameter of Fulcrum Pin*Length of Fulcrum Pin)
P_b = (R_f)/(d₁*l₁)
This formula uses 4 Variables

Variables Used

Bearing Pressure for Fulcrum Pin - (Measured in Pascal) - Bearing Pressure for Fulcrum Pin is the compressive force acting on the contact area between two components of the pin having no relative motion between them.
Force at Fulcrum Pin - (Measured in Newton) - Force at Fulcrum Pin is the force acting onto the fulcrum pin (the pivot about which a lever turns) used as a joint at a fulcrum point.
Diameter of Fulcrum Pin - (Measured in Meter) - Diameter of Fulcrum Pin is the diameter of the pin used at the fulcrum joint.
Length of Fulcrum Pin - (Measured in Meter) - Length of Fulcrum Pin is the total length of the pin used at the fulcrum joint.

STEP 1: Convert Input(s) to Base Unit

Force at Fulcrum Pin: 3560 Newton --> 3560 Newton No Conversion Required
Diameter of Fulcrum Pin: 25 Millimeter --> 0.025 Meter (Check conversion here)
Length of Fulcrum Pin: 31 Millimeter --> 0.031 Meter (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

P_b = (R_f)/(d₁*l₁) --> (3560)/(0.025*0.031)

Evaluating ... ...

P_b = 4593548.38709677

STEP 3: Convert Result to Output's Unit

4593548.38709677 Pascal -->4.59354838709677 Newton per Square Millimeter (Check conversion here)

FINAL ANSWER

4.59354838709677 ≈ 4.593548 Newton per Square Millimeter <-- Bearing Pressure for Fulcrum Pin

(Calculation completed in 00.020 seconds)

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Home » Physics » IC Engine » Design of IC Engine Components » Rocker Arm » Design of Fulcrum Pin » Bearing Pressure at Fulcrum Pin of Rocker Arm

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Created by Saurabh Patil

Shri Govindram Seksaria Institute of Technology and Science (SGSITS ), Indore

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National Institute Of Technology (NIT), Hamirpur

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< 17 Design of Fulcrum Pin Calculators

Length of Fulcrum Pin of Rocker Arm considering Double Shear Failure of Pin

Go Length of Fulcrum Pin = 1.25*sqrt((2*sqrt(Total Force on Rocker Arm of Exhaust Valve^2+Force on Roller Pin^2-2*Force on Roller Pin*Total Force on Rocker Arm of Exhaust Valve*cos(Angle Between Rocker Arms)))/(pi*Shear Stress in Fulcrum Pin))

Diameter of Fulcrum Pin of Rocker Arm Considering Double Shear Failure of Pin

Go Diameter of Fulcrum Pin = sqrt((2*sqrt(Total Force on Rocker Arm of Exhaust Valve^2+Force on Roller Pin^2-2*Force on Roller Pin*Total Force on Rocker Arm of Exhaust Valve*cos(Angle Between Rocker Arms)))/(pi*Shear Stress in Fulcrum Pin))

Shear Stress in Fulcrum Pin of Rocker Arm

Go Shear Stress in Fulcrum Pin = (2*(sqrt(Total Force on Rocker Arm of Exhaust Valve^2+Force on Roller Pin^2-2*Force on Roller Pin*Total Force on Rocker Arm of Exhaust Valve*cos(Angle Between Rocker Arms)))/(pi*Diameter of Fulcrum Pin^2))

Angle between Two Arms of Rocker Arm

Go Angle Between Rocker Arms = pi-arccos(-(Total Force on Rocker Arm of Exhaust Valve^2+Force on Roller Pin^2-Force at Fulcrum Pin^2)/(2*Total Force on Rocker Arm of Exhaust Valve*Force on Roller Pin))

Reaction at Fulcrum Pin of Rocker Arm

Go Force at Fulcrum Pin = sqrt(Total Force on Rocker Arm of Exhaust Valve^2+Force on Roller Pin^2-2*Force on Roller Pin*Total Force on Rocker Arm of Exhaust Valve*cos(Angle Between Rocker Arms))

Reaction at Fulcrum Pin of Rocker Arm for Equal Arm Lengths

Go Force at Fulcrum Pin = Total Force on Rocker Arm of Exhaust Valve*sqrt(2*(1-cos(Angle Between Rocker Arms)))

Length of Fulcrum Pin of Rocker Arm given Reaction at Pin

Go Length of Fulcrum Pin = 1.25*sqrt((2*Force at Fulcrum Pin)/(pi*Shear Stress in Fulcrum Pin))

Diameter of Fulcrum Pin of Rocker Arm given Reaction at Pin

Go Diameter of Fulcrum Pin = sqrt((2*Force at Fulcrum Pin)/(pi*Shear Stress in Fulcrum Pin))

Bearing Pressure at Fulcrum Pin of Rocker Arm

Go Bearing Pressure for Fulcrum Pin = (Force at Fulcrum Pin)/(Diameter of Fulcrum Pin*Length of Fulcrum Pin)

Diameter of Fulcrum Pin of Rocker Arm given Bearing Pressure

Go Diameter of Fulcrum Pin = Force at Fulcrum Pin/(Length of Fulcrum Pin*Bearing Pressure for Fulcrum Pin)

Length of Fulcrum Pin of Rocker Arm given Bearing Pressure

Go Length of Fulcrum Pin = Force at Fulcrum Pin/(Diameter of Fulcrum Pin*Bearing Pressure for Fulcrum Pin)

Reaction at Fulcrum Pin of Rocker Arm Considering bearing Pressure

Go Force at Fulcrum Pin = Diameter of Fulcrum Pin*Length of Fulcrum Pin*Bearing Pressure for Fulcrum Pin

Shear Stress in Fulcrum Pin of Rocker Arm given Reaction at Pin

Go Shear Stress in Fulcrum Pin = (2*Force at Fulcrum Pin)/(pi*Diameter of Fulcrum Pin^2)

Reaction at Fulcrum Pin of Rocker Arm considering Double Shear Failure of Pin

Go Force at Fulcrum Pin = (Shear Stress in Fulcrum Pin*pi*Diameter of Fulcrum Pin^2)/2

Outside Diameter of Boss of Rocker Arm at Fulcrum Pin

Go Outside Diameter of Boss of Rocker Arm = 2*Diameter of Fulcrum Pin

Length of Fulcrum Pin of Rocker Arm given Diameter of Fulcrum Pin

Go Length of Fulcrum Pin = Diameter of Fulcrum Pin*1.25

Diameter of Fulcrum Pin of Rocker Arm given Length of Fulcrum Pin

Go Diameter of Fulcrum Pin = Length of Fulcrum Pin/1.25

Bearing Pressure at Fulcrum Pin of Rocker Arm Formula

Bearing Pressure for Fulcrum Pin = (Force at Fulcrum Pin)/(Diameter of Fulcrum Pin*Length of Fulcrum Pin)
P_b = (R_f)/(d₁*l₁)

What is SI Engine?

A spark-ignition engine (SI engine) is an internal combustion engine, generally a petrol engine, where the combustion process of the air-fuel mixture is ignited by a spark from a spark plug. This is in contrast to compression-ignition engines, typically diesel engines, where the heat generated from compression together with the injection of fuel is enough to initiate the combustion process, without needing any external spark. Spark-ignition engines are commonly referred to as "gasoline engines" in North America, and "petrol engines" in Britain and the rest of the world. Spark-ignition engines can (and increasingly are) run on fuels other than petrol/gasoline, such as autogas (LPG), methanol, ethanol, bioethanol, compressed natural gas (CNG), hydrogen, and (in drag racing) nitromethane.

How to Calculate Bearing Pressure at Fulcrum Pin of Rocker Arm?

Bearing Pressure at Fulcrum Pin of Rocker Arm calculator uses Bearing Pressure for Fulcrum Pin = (Force at Fulcrum Pin)/(Diameter of Fulcrum Pin*Length of Fulcrum Pin) to calculate the Bearing Pressure for Fulcrum Pin, Bearing pressure at fulcrum pin of rocker arm is the compressive force per unit area acting onto the surface between the fulcrum pin and its bushing. Bearing Pressure for Fulcrum Pin is denoted by P_b symbol.

How to calculate Bearing Pressure at Fulcrum Pin of Rocker Arm using this online calculator? To use this online calculator for Bearing Pressure at Fulcrum Pin of Rocker Arm, enter Force at Fulcrum Pin (R_f), Diameter of Fulcrum Pin (d₁) & Length of Fulcrum Pin (l₁) and hit the calculate button. Here is how the Bearing Pressure at Fulcrum Pin of Rocker Arm calculation can be explained with given input values -> 4.6E-6 = (3560)/(0.025*0.031).

FAQ

What is Bearing Pressure at Fulcrum Pin of Rocker Arm?

Bearing pressure at fulcrum pin of rocker arm is the compressive force per unit area acting onto the surface between the fulcrum pin and its bushing and is represented as P_b = (R_f)/(d₁*l₁) or Bearing Pressure for Fulcrum Pin = (Force at Fulcrum Pin)/(Diameter of Fulcrum Pin*Length of Fulcrum Pin). Force at Fulcrum Pin is the force acting onto the fulcrum pin (the pivot about which a lever turns) used as a joint at a fulcrum point, Diameter of Fulcrum Pin is the diameter of the pin used at the fulcrum joint & Length of Fulcrum Pin is the total length of the pin used at the fulcrum joint.

How to calculate Bearing Pressure at Fulcrum Pin of Rocker Arm?

Bearing pressure at fulcrum pin of rocker arm is the compressive force per unit area acting onto the surface between the fulcrum pin and its bushing is calculated using Bearing Pressure for Fulcrum Pin = (Force at Fulcrum Pin)/(Diameter of Fulcrum Pin*Length of Fulcrum Pin). To calculate Bearing Pressure at Fulcrum Pin of Rocker Arm, you need Force at Fulcrum Pin (R_f), Diameter of Fulcrum Pin (d₁) & Length of Fulcrum Pin (l₁). With our tool, you need to enter the respective value for Force at Fulcrum Pin, Diameter of Fulcrum Pin & Length of Fulcrum Pin 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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