A multi-disk clutch consists of two steel disks with one bronze disk. The inner and outer diameters of the contacting surfaces are 200 and 250 mm respectively. The coefficient of friction is 0.1 and the maximum pressure between the contacting surfaces is limited to 0.4 N/mm2. Assuming uniform wear theory, calculate the required force to engage the clutch and the power transmitting capacity at 720 rpm

A multi-disk clutch consists of two steel disks with one bronze disk. The inner and outer diameters of the contacting surfaces are 200 and 250 mm respectively. The coefficient of friction is 0.1 and the maximum pressure between the contacting surfaces is limited to 0.4 N/mm2. Assuming uniform wear theory, calculate the required force to engage the clutch and the power transmitting capacity at 720 rpm

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.76P: The clutch described in Prob. 7.75 is to transmit a torque of 120lbft when the total spring force...

See similar textbooks

Similar questions

A A multiple disc clutch transmits 55 kW of power at 1800 r.p.m. The coefficient of friction is 0.1 and the axial intensity of pressure is not to exceed 160 kN/m. The internal radius is 80 mm and is 0.7 times the external radius. Find the number of plates needed to transmit the required torque.
A multi-plate clutch has four pairs of frictional surfaces, each of internal diameter 120 mm and external diameter 200 mm. If the coefficient of friction is 0.3 and the uniform pressure condition can be assumed, what is the required spring force when the plates transmit 20 kW at 1400 rpm?
A multiplate disc clutch transmits 55 kilowatt of power at 1800 rpm. Coefficient of friction for the friction surface is 0.1. Axial intensity of pressure is not to exceed 160 KN/m2. The internal radius is 80mm and is 0.7 times external radius. Find the number of plates needed to transmit the required torque.
A multi-plate clutch must transmit 11 kW of power without slipping at 1500 rev/min. The coefficient of friction is 0.3. The inner and outer radis are 30 and 85 mm respectively. The axial force applied to the plates is 780 N. Determine the number of plates required using.
A local utility vehicle production company have considered using in one of its design a multi-disc clutch consisting of a 9 steel disc and 8-bronze discs with effective outside and inside diameter of 220mm and 160mm, respectively. If the shaft turns at 150rpm and an axial force of 600N is applied, find the horsepower capacity, considering a coefficient of friction of 0.25
Q2) A multi-plate clutch as in the figure below transmits power at 1500 rpm. The coefficient of friction is 0.4 the inner and outer diameters are 30 and 150 mm respectively. The axial force applied to the plate is 400N. Calculate the torque and power that can be transmitted without slipping using the uniform pressure theory, (03)
A leather faced cone clutch transmits power at 500 rpm. The semi-coneangle a is 12.5°. The mean diameter of the clutch is 300 mm, while the facewidth of the contacting surface of the friction lining is 100 mm. The coefficientof friction is 0.2 and the maximum intensity of pressure is limited to 0.07N/mm2. Calculate the force to engage the clutch and the power transmittingcapacity.
A multiple disc clutch has radial width of the friction material as 1/5th of the maximum radius. The coefficient of friction is 0.25. Find the total number of discs required to transmit 60 kW at 3000 r.p.m. The maximum diameter of the clutch is 250 mm and the axial force is limited to 600 N. Also find the mean unit pressure on each contact surface.
A multiplate disc clutch has 6 active friction surfaces. power transmitted is 20 kW at 400 rpm. Inner and outer radii of the friction surfaces are 90 mm and 120 mm respectively. Assuming uniform wear, with a coefficient of friction 0.3. Find the maximum axial intensity of pressure between the discs.
A multiple V-belt drive is required to transmit 4 kW. The smaller pulley of the system is150 mm diameter, rotates at 200 rev/min, and has an angle of lap angle of 135°. Thegrove angle is 40° and the coefficient of friction between the belt and the pulleys is 0·3.If the maximum tension in any one belt is limited to 800 N, calculate:(a) The number of belts required. (b) The minimum tension in any one belt. (c) The required pre-tensioning of the belt. The centre-to-centre distance between the pulleys is 2 m.(d) Determine to the nearest mm, the required size for the larger pulley.(e) Find the approximate length of the belt
Q8 A multi-disk clutch consists of two steel disks with one bronze disk. The inner and outer diameters ofthe contacting surfaces are 200 and 250 mm respectively. The coeffi cient of friction is 0.1 and themaximum pressure between the contacting surfaces is limited to 0.4 N/mm. Assuming uniform weartheory, calculate the required force to engage the clutch and the power transmitting capacity at 720rpm.
A single plate friction clutch with both sides of plate being effective is used to transmit power at an engine speed of 200rpm. It has outer and inner radii 10cm and 8cm respectively. Find maximum power transmitted and the corresponding axial thrust, if the maximum intensity of pressure is not to exceed 0.08N/mm2 . Assume coefficient of friction as 0.25.