Coefficient of Friction of Roller Contact Bearing Calculator

✖Friction moment on bearing is the moment acting onto the bearing races due to the friction between their rotating surfaces.ⓘ Friction Moment on Bearing [M_t]			+10% -10%
✖Bore Diameter of bearing is the inner diameter of a bearing, referred to as inner diameter.ⓘ Bore Diameter of Bearing [d]			+10% -10%
✖Load acting on bearing is the force acting onto the bearing.ⓘ Load Acting on Bearing [W]			+10% -10%

✖Coefficient of friction for bearing is the ratio defining the force that resists the motion of the oil in relation to another body in contact with it.ⓘ Coefficient of Friction of Roller Contact Bearing [μ]

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Coefficient of Friction of Roller Contact Bearing Solution

STEP 0: Pre-Calculation Summary

Formula Used

Coefficient of Friction for Bearing = 2*Friction Moment on Bearing/(Bore Diameter of Bearing*Load Acting on Bearing)
μ = 2*M_t/(d*W)
This formula uses 4 Variables

Variables Used

Coefficient of Friction for Bearing - Coefficient of friction for bearing is the ratio defining the force that resists the motion of the oil in relation to another body in contact with it.
Friction Moment on Bearing - (Measured in Newton Meter) - Friction moment on bearing is the moment acting onto the bearing races due to the friction between their rotating surfaces.
Bore Diameter of Bearing - (Measured in Meter) - Bore Diameter of bearing is the inner diameter of a bearing, referred to as inner diameter.
Load Acting on Bearing - (Measured in Newton) - Load acting on bearing is the force acting onto the bearing.

STEP 1: Convert Input(s) to Base Unit

Friction Moment on Bearing: 120 Newton Millimeter --> 0.12 Newton Meter (Check conversion here)
Bore Diameter of Bearing: 30 Millimeter --> 0.03 Meter (Check conversion here)
Load Acting on Bearing: 1800 Newton --> 1800 Newton No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

μ = 2*M_t/(d*W) --> 2*0.12/(0.03*1800)

Evaluating ... ...

μ = 0.00444444444444444

STEP 3: Convert Result to Output's Unit

0.00444444444444444 --> No Conversion Required

FINAL ANSWER

0.00444444444444444 ≈ 0.004444 <-- Coefficient of Friction for Bearing

(Calculation completed in 00.020 seconds)

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National Institute of Technology (NIT), Tiruchirapalli

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< Rolling Contact Bearing Configuration Calculators

Radial Factor of Roller Contact Bearing given Race Rotation Factor

LaTeX 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

LaTeX 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

LaTeX 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

LaTeX 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

Coefficient of Friction of Roller Contact Bearing Formula

LaTeX Go

Coefficient of Friction for Bearing = 2*Friction Moment on Bearing/(Bore Diameter of Bearing*Load Acting on Bearing)
μ = 2*M_t/(d*W)

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 Coefficient of Friction of Roller Contact Bearing?

Coefficient of Friction of Roller Contact Bearing calculator uses Coefficient of Friction for Bearing = 2*Friction Moment on Bearing/(Bore Diameter of Bearing*Load Acting on Bearing) to calculate the Coefficient of Friction for Bearing, Coefficient of Friction of Roller Contact Bearing is the value of the friction coefficient between the surface of the bearing and the rollers. Coefficient of friction (COF) is a dimensionless number that is defined as the ratio between friction force and normal force. Coefficient of Friction for Bearing is denoted by μ symbol.

How to calculate Coefficient of Friction of Roller Contact Bearing using this online calculator? To use this online calculator for Coefficient of Friction of Roller Contact Bearing, enter Friction Moment on Bearing (M_t), Bore Diameter of Bearing (d) & Load Acting on Bearing (W) and hit the calculate button. Here is how the Coefficient of Friction of Roller Contact Bearing calculation can be explained with given input values -> 0.004444 = 2*0.12/(0.03*1800).

FAQ

What is Coefficient of Friction of Roller Contact Bearing?

Coefficient of Friction of Roller Contact Bearing is the value of the friction coefficient between the surface of the bearing and the rollers. Coefficient of friction (COF) is a dimensionless number that is defined as the ratio between friction force and normal force and is represented as μ = 2*M_t/(d*W) or Coefficient of Friction for Bearing = 2*Friction Moment on Bearing/(Bore Diameter of Bearing*Load Acting on Bearing). Friction moment on bearing is the moment acting onto the bearing races due to the friction between their rotating surfaces, Bore Diameter of bearing is the inner diameter of a bearing, referred to as inner diameter & Load acting on bearing is the force acting onto the bearing.

How to calculate Coefficient of Friction of Roller Contact Bearing?

Coefficient of Friction of Roller Contact Bearing is the value of the friction coefficient between the surface of the bearing and the rollers. Coefficient of friction (COF) is a dimensionless number that is defined as the ratio between friction force and normal force is calculated using Coefficient of Friction for Bearing = 2*Friction Moment on Bearing/(Bore Diameter of Bearing*Load Acting on Bearing). To calculate Coefficient of Friction of Roller Contact Bearing, you need Friction Moment on Bearing (M_t), Bore Diameter of Bearing (d) & Load Acting on Bearing (W). With our tool, you need to enter the respective value for Friction Moment on Bearing, Bore Diameter of Bearing & Load Acting on Bearing 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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