Number of Bearings required given Reliability Formula

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Number of Bearings Value is defined as the number of bearings in a bearing system. Check FAQs
Nb=log10(Rs)log10(R)
Nb - Number of Bearings?Rs - Reliability of Bearing System?R - Reliability of Bearing?

Number of Bearings required given Reliability Example

With values
With units
Only example

Here is how the Number of Bearings required given Reliability equation looks like with Values.

Here is how the Number of Bearings required given Reliability equation looks like with Units.

Here is how the Number of Bearings required given Reliability equation looks like.

3.3699Edit=log10(0.65Edit)log10(0.88Edit)
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Number of Bearings required given Reliability Solution

Follow our step by step solution on how to calculate Number of Bearings required given Reliability?

FIRST Step Consider the formula
Nb=log10(Rs)log10(R)
Next Step Substitute values of Variables
Nb=log10(0.65)log10(0.88)
Next Step Prepare to Evaluate
Nb=log10(0.65)log10(0.88)
Next Step Evaluate
Nb=3.36987838937772
LAST Step Rounding Answer
Nb=3.3699

Number of Bearings required given Reliability Formula Elements

Variables
Functions
Number of Bearings
Number of Bearings Value is defined as the number of bearings in a bearing system.
Symbol: Nb
Measurement: NAUnit: Unitless
Note: Value should be greater than 0.
Reliability of Bearing System
Reliability of bearing system is the minimum percentage probability of 90% of a group of identical bearings system achieving their L10 design life expectancy.
Symbol: Rs
Measurement: NAUnit: Unitless
Note: Value should be greater than 0.
Reliability of Bearing
Reliability of bearing is the minimum percentage probability of 90% of a group of identical bearings system achieving their L10 design life expectancy.
Symbol: R
Measurement: NAUnit: Unitless
Note: Value should be greater than 0.
log10
The common logarithm, also known as the base-10 logarithm or the decimal logarithm, is a mathematical function that is the inverse of the exponential function.
Syntax: log10(Number)

Other formulas in Rolling Contact Bearing Configuration category

​Go Radial Load on Bearing given Race Rotation Factor
Fr=Peq-(YFa)XV
​Go Axial Thrust Load on Bearing given Race Rotation Factor
Fa=Peq-(XVFr)Y
​Go Race Rotation Factor of Roller Contact Bearing
V=Peq-(YFa)XFr
​Go Radial Factor of Roller Contact Bearing given Race Rotation Factor
X=Peq-(YFa)VFr

How to Evaluate Number of Bearings required given Reliability?

Number of Bearings required given Reliability evaluator uses Number of Bearings = (log10(Reliability of Bearing System))/(log10(Reliability of Bearing)) to evaluate the Number of Bearings, Number of Bearings required given Reliability is the number of bearings required in the bearing system to account for the net bearing load required. Number of Bearings is denoted by Nb symbol.

How to evaluate Number of Bearings required given Reliability using this online evaluator? To use this online evaluator for Number of Bearings required given Reliability, enter Reliability of Bearing System (Rs) & Reliability of Bearing (R) and hit the calculate button.

FAQs on Number of Bearings required given Reliability

What is the formula to find Number of Bearings required given Reliability?
The formula of Number of Bearings required given Reliability is expressed as Number of Bearings = (log10(Reliability of Bearing System))/(log10(Reliability of Bearing)). Here is an example- 3.369878 = (log10(0.65))/(log10(0.88)).
How to calculate Number of Bearings required given Reliability?
With Reliability of Bearing System (Rs) & Reliability of Bearing (R) we can find Number of Bearings required given Reliability using the formula - Number of Bearings = (log10(Reliability of Bearing System))/(log10(Reliability of Bearing)). This formula also uses Common Logarithm (log10) function(s).
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