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Oil Film Thickness at any Position in Journal Bearing Formula

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Oil Film Thickness at any Position θ is the thickness of the film at a desired position from the position of minimum film thickness. Check FAQs

h = c \cdot (1 + ε \cdot \cos (θ))

h - Oil Film Thickness at any Position θ?c - Radial Clearance?ε - Eccentricity Ratio?θ - Angle Measured from Point of Minimum of Oil Film?

Oil Film Thickness at any Position in Journal Bearing Example

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Here is how the Oil Film Thickness at any Position in Journal Bearing equation looks like with Values.

Here is how the Oil Film Thickness at any Position in Journal Bearing equation looks like with Units.

Here is how the Oil Film Thickness at any Position in Journal Bearing equation looks like.

0.1389 = 0.082 \cdot (1 + 0.8 \cdot \cos (0.52))

0.1389m = 0.082m \cdot (1 + 0.8 \cdot \cos (0.52rad))

0.1389 = 0.082 \cdot (1 + 0.8 \cdot \cos (0.52))

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Oil Film Thickness at any Position in Journal Bearing Solution

Follow our step by step solution on how to calculate Oil Film Thickness at any Position in Journal Bearing?

FIRST Step Consider the formula

h = c \cdot (1 + ε \cdot \cos (θ))

Next Step Substitute values of Variables

∴

h = 0.082m \cdot (1 + 0.8 \cdot \cos (0.52rad))

Next Step Prepare to Evaluate

∴

h = 0.082 \cdot (1 + 0.8 \cdot \cos (0.52))

Next Step Evaluate

∴

h = 0.138928938186854m

LAST Step Rounding Answer

∴

h = 0.1389m

Oil Film Thickness at any Position in Journal Bearing Formula Elements

Variables

Functions

Oil Film Thickness at any Position θ

Oil Film Thickness at any Position θ is the thickness of the film at a desired position from the position of minimum film thickness.

Symbol: h

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Formulas to find Oil Film Thickness at any Position θ

Radial Clearance

The Radial Clearance is a measured value of the total movement of one ring relative to the other in a plane perpendicular to the bearing axis.

Symbol: c

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Formulas to find Radial Clearance

Eccentricity Ratio

Eccentricity Ratio is the ratio of the eccentricity of the bearing inner race to the radial clearance.

Symbol: ε

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Eccentricity Ratio

Angle Measured from Point of Minimum of Oil Film

Angle Measured from Point of Minimum of Oil Film to any point of interest in the direction of rotation.

Symbol: θ

Measurement: AngleUnit: rad

Note: Value should be less than 361.

Formulas to find Angle Measured from Point of Minimum of Oil Film

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 in Vertical Shaft Rotating in Guide Bearing category

Go Surface Velocity of Shaft given Shaft Speed and Diameter

U = π \cdot D \cdot N

Go Length of Bearing in Direction of Motion

B = \frac{D \cdot β}{2}

Go Angular Length of Bearing given Length of Bearing in Direction of Motion

β = \frac{2 \cdot B}{D}

Go Journal Diameter given Angular Length of Bearing and Length of Bearing in Direction of Motion

D = \frac{2 \cdot B}{β}

How to Evaluate Oil Film Thickness at any Position in Journal Bearing?

Oil Film Thickness at any Position in Journal Bearing evaluator uses Oil Film Thickness at any Position θ = Radial Clearance*(1+Eccentricity Ratio*cos(Angle Measured from Point of Minimum of Oil Film)) to evaluate the Oil Film Thickness at any Position θ, Oil Film Thickness at any Position in Journal Bearing formula is defined as a measure of the thickness of the lubricating film at a specific point in a journal bearing, which is critical in tribology as it affects the bearing's performance, friction, and wear. Oil Film Thickness at any Position θ is denoted by h symbol.

How to evaluate Oil Film Thickness at any Position in Journal Bearing using this online evaluator? To use this online evaluator for Oil Film Thickness at any Position in Journal Bearing, enter Radial Clearance (c), Eccentricity Ratio (ε) & Angle Measured from Point of Minimum of Oil Film (θ) and hit the calculate button.

FAQs on Oil Film Thickness at any Position in Journal Bearing

What is the formula to find Oil Film Thickness at any Position in Journal Bearing?

The formula of Oil Film Thickness at any Position in Journal Bearing is expressed as Oil Film Thickness at any Position θ = Radial Clearance*(1+Eccentricity Ratio*cos(Angle Measured from Point of Minimum of Oil Film)). Here is an example- 0.138929 = 0.082*(1+0.8*cos(0.52)).

How to calculate Oil Film Thickness at any Position in Journal Bearing?

With Radial Clearance (c), Eccentricity Ratio (ε) & Angle Measured from Point of Minimum of Oil Film (θ) we can find Oil Film Thickness at any Position in Journal Bearing using the formula - Oil Film Thickness at any Position θ = Radial Clearance*(1+Eccentricity Ratio*cos(Angle Measured from Point of Minimum of Oil Film)). This formula also uses Cosine (cos) function(s).

Can the Oil Film Thickness at any Position in Journal Bearing be negative?

No, the Oil Film Thickness at any Position in Journal Bearing, measured in Length cannot be negative.

Which unit is used to measure Oil Film Thickness at any Position in Journal Bearing?

Oil Film Thickness at any Position in Journal Bearing is usually measured using the Meter[m] for Length. Millimeter[m], Kilometer[m], Decimeter[m] are the few other units in which Oil Film Thickness at any Position in Journal Bearing can be measured.

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Oil Film Thickness at any Position in Journal Bearing Formula

Oil Film Thickness at any Position in Journal Bearing Example

Oil Film Thickness at any Position in Journal Bearing Solution

Oil Film Thickness at any Position in Journal Bearing Formula Elements

Other formulas in Vertical Shaft Rotating in Guide Bearing category

How to Evaluate Oil Film Thickness at any Position in Journal Bearing?

FAQs on Oil Film Thickness at any Position in Journal Bearing

Variable Name