Name: double-collar bearing torque calculations
Uploaded: 2023-09-22T11:49:30.000Z
Duration: 1 min 24 s
Channel: JoVE

Considere un rodamiento de doble collar con un radio de agujero de 20 milímetros, que experimenta una fuerza axial de cinco kilonewtons.
El collar A, con un radio de 40 milímetros, soporta el 75 por ciento de la fuerza, mientras que el collar B, con un radio de 30 milímetros, soporta el 25 por ciento; ambos collares distribuyen la presión de manera uniforme.
Calcule el momento de fricción máximo que puede resistir el rodamiento, dado un coeficiente de fricción estática de 0,3 para ambos collarines.
Recuerde la expresión para el momento de fricción máximo requerido. Reorganizando y sustituyendo los valores de las fuerzas soportadas por ambos collares, se puede determinar el momento de fricción máximo.
A continuación, modifique la configuración ejerciendo una fuerza axial de 15 kilonewtons sobre el rodamiento. Determine el par mínimo requerido para superar la fricción.
Utilizando la ecuación del momento de fricción y sustituyendo los valores, se puede determinar el momento de ambos collares causado por las fuerzas de fricción.
Al igualar la suma de momentos alrededor del eje z a cero y sustituir los valores conocidos, se puede determinar el par mínimo requerido.

<ol>
	<li>Hibbeler, R.C. (2016). Ingeniería Mecánica \u2012 Estática y Dinámica. Hoboken, Nueva Jersey: Pearson Prentice Hall. Págs. 454.</li>
</ol>

rodamientos: resolución de problemas

Bearings: Problem Solving

Comprender los cálculos y conceptos relacionados con los rodamientos de doble collar es esencial para los ingenieros y diseñadores a fin de optimizar el rendimiento de estos componentes en diversas aplicaciones. Mediante el análisis del rodamiento bajo diferentes condiciones, se puede garantizar que pueda resistir las fuerzas y momentos experimentados durante su funcionamiento. Este conocimiento permite tomar decisiones más acertadas al diseñar y seleccionar rodamientos para fines y configuraciones específicas. Considere un rodamiento de doble collar con dimensiones específicas y una fuerza axial aplicada sobre él. <img alt="Figura 1" src="/files/ftp_upload/14327/14327_PT_Figure_1v2.svg" style="text-align: center; height: 400px;"> Para encontrar el momento de fricción máximo que el rodamiento de doble collar puede resistir, se puede utilizar la siguiente expresión: <img alt="Ecuación 1" src="/files/ftp_upload/14327/14327_PT_Equation_1v2.svg" style="text-align: center; height: 39px;"> El momento de fricción máximo se puede calcular al reorganizar la expresión y sustituir los valores de las fuerzas soportadas por ambos collares. Considere un escenario en el que la fuerza axial aplicada sobre el rodamiento de doble collar aumenta. Para determinar el torque mínimo necesario para vencer la fricción, primero calcule el momento para ambos collares causado por las fuerzas de fricción utilizando las ecuaciones de momento de fricción y sustituyendo los valores. <img alt="Ecuación 2" src="/files/ftp_upload/14327/14327_PT_Equation_2v2.svg" style="text-align: center; height: 39px;"> <img alt="Ecuación 3" src="/files/ftp_upload/14327/14327_PT_Equation_3v2.svg" style="text-align: center; height: 39px;"> A continuación, iguale la suma de los momentos alrededor del eje z a cero y sustituya los valores conocidos. Se puede evaluar el torque mínimo requerido para vencer la fricción en la configuración modificada. <img alt="Ecuación 4" src="/files/ftp_upload/14327/14327_PT_Equation_4v2.svg" style="text-align: center; height: 13px;">

Rodamientos: Resolución de problemas

Comprender los cálculos y conceptos relacionados con los rodamientos de doble collar es esencial para que los ingenieros y diseñadores optimicen el rendimiento de ...

Education

Educación

JoVE Core

Mechanical Engineering

Ingeniería Mecánica

Unit 1

Unidad 1

Friction

Fricción

KEY TERMS AND CONCEPTS

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double-collar bearing torque calculations

Double-collar bearing torque calculations show how friction and axial force affect bearing performance. Engineers use these calculations to test whether the bearing can handle the forces and moments it experiences during operation. This helps them choose and design bearings for specific applications and setups.

For a double-collar bearing with set dimensions and an axial force applied, the maximum frictional moment can be found with a standard expression. The equation is rearranged, and the forces supported by both collars are substituted into it. This gives the greatest frictional moment the bearing can withstand under that condition.

The same method also helps when the axial force on the double-collar bearing increases. First, the frictional moment for each collar is calculated from the frictional force equations. Then the moments about the z-axis are set equal to zero, and the known values are substituted. From this, the minimum torque needed to overcome the friction in the modified case can be determined.

Double-Collar Bearing Torque Calculations

double-collar-bearing-torque-calculations

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key terms and concepts

Learn how frictional moment and axial force are used to solve double-collar bearing problems, including maximum moment and minimum torque calculations.

Double-Collar Bearing Torque Calculations | JoVE K12

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Double-Collar Bearing Torque Calculations

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