Median Life of Roller Contact Bearing Calculator

✖Median life of bearing is defined as five times the value of the rated bearing life in millions of revolutions.ⓘ Median Life of Roller Contact Bearing [L₅₀]

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Formula

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Median Life of Roller Contact Bearing

Formula

`"L"_{"50"} = 5*"L"_{"10"}`

Example

`"720"=5*"144"`

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Median Life of Roller Contact Bearing Solution

STEP 0: Pre-Calculation Summary

Formula Used

Median Life of Bearing = 5*Rated Bearing Life
L₅₀ = 5*L₁₀
This formula uses 2 Variables

Variables Used

Median Life of Bearing - Median life of bearing is defined as five times the value of the rated bearing life in millions of revolutions.
Rated Bearing Life - Rated Bearing Life is defined as the total number of million revolutions the bearing rotates before failure.

STEP 1: Convert Input(s) to Base Unit

Rated Bearing Life: 144 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

L₅₀ = 5*L₁₀ --> 5*144

Evaluating ... ...

L₅₀ = 720

STEP 3: Convert Result to Output's Unit

720 --> No Conversion Required

FINAL ANSWER

720 <-- Median Life of Bearing

(Calculation completed in 00.004 seconds)

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Home » Engineering » Mechanical » Machine Design » Design of Rolling Contact Bearing » Rolling Contact Bearing Configuration » Median Life of Roller Contact Bearing

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Created by Vaibhav Malani

National Institute of Technology (NIT), Tiruchirapalli

Vaibhav Malani has created this Calculator and 600+ more calculators!

Verified by Anshika Arya

National Institute Of Technology (NIT), Hamirpur

Anshika Arya has verified this Calculator and 2500+ more calculators!

< 21 Rolling Contact Bearing Configuration Calculators

Radial Factor of Roller Contact Bearing given Race Rotation Factor

Go Radial Factor = (Equivalent dynamic load on bearing-(Thrust Factor for Bearing*Axial or thrust load acting on bearing))/(Race-rotation factor*Radial load acting on bearing)

Radial Load on Bearing given Race Rotation Factor

Go Radial load acting on bearing = (Equivalent dynamic load on bearing-(Thrust Factor for Bearing*Axial or thrust load acting on bearing))/(Radial Factor*Race-rotation factor)

Race Rotation Factor of Roller Contact Bearing

Go Race-rotation factor = (Equivalent dynamic load on bearing-(Thrust Factor for Bearing*Axial or thrust load acting on bearing))/(Radial Factor*Radial load acting on bearing)

Axial Thrust Load on Bearing given Race Rotation Factor

Go Axial or thrust load acting on bearing = (Equivalent dynamic load on bearing-(Radial Factor*Race-rotation factor*Radial load acting on bearing))/Thrust Factor for Bearing

Thrust factor of Bearing given Race Rotation Factor

Go Thrust Factor for Bearing = (Equivalent dynamic load on bearing-(Radial Factor*Race-rotation factor*Radial load acting on bearing))/Axial or thrust load acting on bearing

Radial Factor of Roller Contact Bearing

Go Radial Factor = (Equivalent dynamic load on bearing-(Thrust Factor for Bearing*Axial or thrust load acting on bearing))/(Radial load acting on bearing)

Radial Load on Bearing

Go Radial load acting on bearing = (Equivalent dynamic load on bearing-(Thrust Factor for Bearing*Axial or thrust load acting on bearing))/(Radial Factor)

Axial Thrust Load on Bearing given Thrust Factor

Go Axial or thrust load acting on bearing = (Equivalent dynamic load on bearing-(Radial Factor*Radial load acting on bearing))/Thrust Factor for Bearing

Thrust factor of Bearing

Go Thrust Factor for Bearing = (Equivalent dynamic load on bearing-(Radial Factor*Radial load acting on bearing))/Axial or thrust load acting on bearing

Number of Bearings required given Reliability

Go Number of Bearings = (log10(Reliability of Bearing System))/(log10(Reliability of Bearing))

Load on Bearing given Moment on bearing

Go Load Acting on Bearing = Friction moment on bearing/(Coefficient of friction for bearing*(Bore Diameter of bearing/2))

Coefficient of Friction of Roller Contact Bearing

Go Coefficient of friction for bearing = 2*Friction moment on bearing/(Bore Diameter of bearing*Load Acting on Bearing)

Friction Moment on Roller Contact Bearing

Go Friction moment on bearing = Coefficient of friction for bearing*Load Acting on Bearing*(Bore Diameter of bearing/2)

Bore Diameter of Bearing

Go Bore Diameter of bearing = 2*Friction moment on bearing/(Coefficient of friction for bearing*Load Acting on Bearing)

Reliability of Bearing

Go Reliability of Bearing = e^(-(Corresponding Life of Bearing/Constant a of Bearing)^Constant b of Bearing)

Train Wheel Diameter considering Bearing Life

Go Train Wheel Diameter = (1000/(pi*Rated Bearing Life))*Nominal Life in Millions of Kilometers

Nominal Life of Roller Contact Bearing

Go Nominal Life in Millions of Kilometers = Rated Bearing Life/(1000/(pi*Train Wheel Diameter))

Speed of Rotation of Bearing

Go Speed of bearing in rpm = Rated Bearing Life*(10^6)/(60*Rated Bearing Life in Hours)

Reliability of Bearing given Number of Bearings

Go Reliability of Bearing = Reliability of Bearing System^(1/Number of Bearings)

Reliability of Complete Bearing System

Go Reliability of Bearing System = Reliability of Bearing^Number of Bearings

Median Life of Roller Contact Bearing

Go Median Life of Bearing = 5*Rated Bearing Life

Median Life of Roller Contact Bearing Formula

Median Life of Bearing = 5*Rated Bearing Life
L₅₀ = 5*L₁₀

What is a rolling contact bearing?

The term rolling contact bearings refers to the wide variety of bearings that use spherical balls or some other type of roller between the stationary and the moving elements. The most common type of bearing supports a rotating shaft, resisting purely radial loads or a combination of radial and axial (thrust) loads.

How to Calculate Median Life of Roller Contact Bearing?

Median Life of Roller Contact Bearing calculator uses Median Life of Bearing = 5*Rated Bearing Life to calculate the Median Life of Bearing, Median Life of Roller Contact Bearing is the life of the bearing calculated using the rated bearing life. It is the life till which 50% of the bearings die. Median Life of Bearing is denoted by L₅₀ symbol.

How to calculate Median Life of Roller Contact Bearing using this online calculator? To use this online calculator for Median Life of Roller Contact Bearing, enter Rated Bearing Life (L₁₀) and hit the calculate button. Here is how the Median Life of Roller Contact Bearing calculation can be explained with given input values -> 720 = 5*144.

FAQ

What is Median Life of Roller Contact Bearing?

Median Life of Roller Contact Bearing is the life of the bearing calculated using the rated bearing life. It is the life till which 50% of the bearings die and is represented as L₅₀ = 5*L₁₀ or Median Life of Bearing = 5*Rated Bearing Life. Rated Bearing Life is defined as the total number of million revolutions the bearing rotates before failure.

How to calculate Median Life of Roller Contact Bearing?

Median Life of Roller Contact Bearing is the life of the bearing calculated using the rated bearing life. It is the life till which 50% of the bearings die is calculated using Median Life of Bearing = 5*Rated Bearing Life. To calculate Median Life of Roller Contact Bearing, you need Rated Bearing Life (L₁₀). With our tool, you need to enter the respective value for Rated Bearing Life 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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