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Friction Radius of Disk Brake Formula

GoFriction Radius given Torque Capacity of Disk Brake Formula

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Friction Radius of Brake specifies a characteristic radius for a disc clutch/brake. Check FAQs

R f = 2 \cdot \frac{{R o}^{3} - {R i}^{3}}{3 \cdot ({R o}^{2} - {R i}^{2})}

R_f - Friction Radius of Brake?R_o - Brake Pad Outer Radius?R_i - Brake Pad Inner Radius?

Friction Radius of Disk Brake Example

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Here is how the Friction Radius of Disk Brake equation looks like with Values.

Here is how the Friction Radius of Disk Brake equation looks like with Units.

Here is how the Friction Radius of Disk Brake equation looks like.

112.963 = 2 \cdot \frac{125^{3} - 100^{3}}{3 \cdot (125^{2} - 100^{2})}

112.963mm = 2 \cdot \frac{{125mm}^{3} - {100mm}^{3}}{3 \cdot ({125mm}^{2} - {100mm}^{2})}

112.963 = 2 \cdot \frac{125^{3} - 100^{3}}{3 \cdot (125^{2} - 100^{2})}

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Friction Radius of Disk Brake Solution

Follow our step by step solution on how to calculate Friction Radius of Disk Brake?

FIRST Step Consider the formula

R f = 2 \cdot \frac{{R o}^{3} - {R i}^{3}}{3 \cdot ({R o}^{2} - {R i}^{2})}

Next Step Substitute values of Variables

∴

R f = 2 \cdot \frac{{125mm}^{3} - {100mm}^{3}}{3 \cdot ({125mm}^{2} - {100mm}^{2})}

Next Step Convert Units

∴

R f = 2 \cdot \frac{{0.125m}^{3} - {0.1m}^{3}}{3 \cdot ({0.125m}^{2} - {0.1m}^{2})}

Next Step Prepare to Evaluate

∴

R f = 2 \cdot \frac{{0.125}^{3} - {0.1}^{3}}{3 \cdot ({0.125}^{2} - {0.1}^{2})}

Next Step Evaluate

∴

R f = 0.112962962962963m

Next Step Convert to Output's Unit

∴

R f = 112.962962962963mm

LAST Step Rounding Answer

∴

R f = 112.963mm

Friction Radius of Disk Brake Formula Elements

Variables

Friction Radius of Brake

Friction Radius of Brake specifies a characteristic radius for a disc clutch/brake.

Symbol: R_f

Measurement: LengthUnit: mm

Note: Value should be greater than 0.

Formulas to find Friction Radius of Brake

Brake Pad Outer Radius

Brake Pad Outer Radius is defined as the outer radius of the brake pad.

Symbol: R_o

Measurement: LengthUnit: mm

Note: Value should be greater than 0.

Formulas to find Brake Pad Outer Radius

Brake Pad Inner Radius

Brake Pad Inner Radius is defined as the inner radius of the brake pad.

Symbol: R_i

Measurement: LengthUnit: mm

Note: Value should be greater than 0.

Formulas to find Brake Pad Inner Radius

Other Formulas to find Friction Radius of Brake

Go Friction Radius given Torque Capacity of Disk Brake

R f = \frac{M t}{μ \cdot F}

Other formulas in Disk Brakes category

Go Torque Capacity of Disk Brake

M t = μ \cdot F \cdot R f

Go Coefficient of Friction given Torque Capacity of Disk Brake

μ = \frac{M t}{F \cdot R f}

Go Actuating Force given Torque Capacity of Disk Brake

F = \frac{M t}{μ \cdot R f}

Go Area of Brake Pad

A = θ p \cdot \frac{{R o}^{2} - {R i}^{2}}{2}

How to Evaluate Friction Radius of Disk Brake?

Friction Radius of Disk Brake evaluator uses Friction Radius of Brake = 2*(Brake Pad Outer Radius^3-Brake Pad Inner Radius^3)/(3*(Brake Pad Outer Radius^2-Brake Pad Inner Radius^2)) to evaluate the Friction Radius of Brake, The Friction Radius of Disk Brake formula specifies characteristic radius for disc clutch/brake. Friction Radius of Brake is denoted by R_f symbol.

How to evaluate Friction Radius of Disk Brake using this online evaluator? To use this online evaluator for Friction Radius of Disk Brake, enter Brake Pad Outer Radius (R_o) & Brake Pad Inner Radius (R_i) and hit the calculate button.

FAQs on Friction Radius of Disk Brake

What is the formula to find Friction Radius of Disk Brake?

The formula of Friction Radius of Disk Brake is expressed as Friction Radius of Brake = 2*(Brake Pad Outer Radius^3-Brake Pad Inner Radius^3)/(3*(Brake Pad Outer Radius^2-Brake Pad Inner Radius^2)). Here is an example- 112963 = 2*(0.125^3-0.1^3)/(3*(0.125^2-0.1^2)).

How to calculate Friction Radius of Disk Brake?

With Brake Pad Outer Radius (R_o) & Brake Pad Inner Radius (R_i) we can find Friction Radius of Disk Brake using the formula - Friction Radius of Brake = 2*(Brake Pad Outer Radius^3-Brake Pad Inner Radius^3)/(3*(Brake Pad Outer Radius^2-Brake Pad Inner Radius^2)).

What are the other ways to Calculate Friction Radius of Brake?

Here are the different ways to Calculate Friction Radius of Brake-

Friction Radius of Brake=Torque Absorbed By Brake/(Coefficient of Friction For Brake*Actuating Force on Brake)

Can the Friction Radius of Disk Brake be negative?

No, the Friction Radius of Disk Brake, measured in Length cannot be negative.

Which unit is used to measure Friction Radius of Disk Brake?

Friction Radius of Disk Brake is usually measured using the Millimeter[mm] for Length. Meter[mm], Kilometer[mm], Decimeter[mm] are the few other units in which Friction Radius of Disk Brake can be measured.

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Friction Radius of Disk Brake Formula

​GoFriction Radius given Torque Capacity of Disk Brake Formula

Friction Radius of Disk Brake Example

Friction Radius of Disk Brake Solution

Friction Radius of Disk Brake Formula Elements

Other Formulas to find Friction Radius of Brake

Other formulas in Disk Brakes category

How to Evaluate Friction Radius of Disk Brake?

FAQs on Friction Radius of Disk Brake

Variable Name

GoFriction Radius given Torque Capacity of Disk Brake Formula