A cone clutch is to transmit 7.5 kW at 900 rpm. The cone has a face angle of 12o. The width of the face is half of the mean radius and the normal pressure between the contact faces is not exceeding 0.09Nmm2⁄. Assuming uniform wear and the coefficient friction between contact faces as 0.2. Find the main dimensions of the clutch and the axial force required to engage the clutch.

A cone clutch is to transmit 7.5 kW at 900 rpm. The cone has a face angle of 12o. The width of the face is half of the mean radius and the normal pressure between the contact faces is not exceeding 0.09Nmm2⁄. Assuming uniform wear and the coefficient friction between contact faces as 0.2. Find the main dimensions of the clutch and the axial force required to engage the clutch.

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 7.57P: The square-threaded screw with a pitch of 10 mm and a mean radius of 18 mm drives a gear that has a...

See similar textbooks

Similar questions

Q2 ) A cone clutch is to transmit 10 KW at 600 r.p.m. the cone has aface angle of 10◦The width of the face is halfe of the mean radius and the max pressureis 0.1 N/mm²Assuming uniform wear and the coefficient of friction is 0.3, find theinner and outer radius and the axial force required on the clutch.
A conical clutch has an included angle of 120°, a coefficient of friction of 0.4, and outer and inner diameters of 85mm and 18mm respectively. Using both the uniform wear theory and the uniform pressure theory, calculate the force required to press the two halves together if it is to transmit 300W at 750rev/min. The uniform wear theory and the uniform pressure theory deliver different values for torque in the same system. Which theory would be preferred in practice for use in calculations involving a friction clutch? Give reasons for your choice.
A cone clutch is to transmit 10 KW at 600 r.p.m. the cone has aface angle of 10◦The width of the face is halfe of the mean radius and the max pressureis 0.1 N/mm²Assuming uniform wear and the coefficient of friction is 0.3, find theinner and outer radius and the axial force required on the clutch. Subject: Theory of Machines
A cone clutch is mounted on a shaft which transmits power at 200 rpm. The small diameter of the cone is 200 mm, the cone face is 50 mm and the cone face makes an angle of 12 degrees with the horizontal. Determine the axial force necessary to engage the clutch to transmit 7 kW if the coefficient of friction of the contact surfaces is 0.15. What is the maximum pressure on the contact surfaces assuming uniform wear?
A cone clutch with a cone semi-angle of 120 is to transmit 11.19KW at 750rpm. The width of the face is 1/4th of the mean diameter and the normal pressure between the contact faces is not to exceed 8.27 X 104 Pa allowing the co efficient of friction of 0.2, Determine the main dimensions of the clutch and the axial force required.
The axial pressure on a single disc clutch (both sides of the disc is effective) is limited to 0.12 Mpa. This is designed for a vehicle with 13kW power at a speed of 700 rpm. Assume uniform wear conditions and a friction coefficient of 0.25. If the outer dimater of the disc is 1.25 times the internal diameter, determine the dimensions of the disc lining and the axial force exerted by the springs.
Determine the principal dimensions of a cone clutch faced with lather to transmit 40 kW at 800 r.p.m. from an electric motor to an air compressor. Sketch a sectional front view of the clutch and provide the main dimensions. Assume that the semi-angle of the cone is 10°, the coefficient of friction is 0.3, mean diameter of cone is (7-10)d, where d is the diameter of the shaft, allowable normal pressure for lather and cast iron is 0.1 to 0.2 N/mm, shear stress 100 N/mm², load factor is 2 and the mean diameter to face width ratio is 6.
Two pulleys, one 650 mm diameter and the other 400 mm diameter, on parallel shafts 1.5 m apart are connected by a flat belt. Find the length of the belt required and the angle of contact between the belt and each pulley. What power can be transmitted by the belt when the larger pulley rotates at 1200 rev/min, if the maximum permissible tension in the belt is 10 kN, and the coefficient of friction between the belt and pulley is 0.05? dont write handwritten solution.
A multiplate clutch has three pairs of contact surfaces. The outer and inner radii of the contact surfaces are 100 mm and 50 mm respectively. The maximum axial spring force is limited to 1 kN. If the coefficient of friction is 0.35 and assuming uniform wear, find the power transmitted by the clutch at 1500 r.p.m.
A multiple disc clutch, steel on bronze, is to transmit 7 kW at 1000 rpm. The inner radius of the contact is 50 mm and outer radius of the contact is 75 mm. The clutch operates in oil with an expected coefficient of 0.1. The average allowable pressure is 0.35 N/mm2. Determine the total number of steel and bronze discs.
A single disc clutch with both sides effective is required for a vehicle. The power for initial estimation of the clutch is 100 kW at 4000 rpm. Determine the radial dimensions (inner and outer radius) and the actuating force (W). Base the design on the uniform wear assumption. Assume maximum pressure (pmax) as 1.6 MN/m2 and ?2?1= 1√2where ‘r2’ and ‘r1’ represent inner and outer radius of the friction surface. Take µ = 0.35. Find also the minimum pressure (pmin).
A three-thread worm gear, rotating at 1000 rpm, drives a 31-tooth worm gear and transmit 15 HP. Theworm has 14 ½ o teeth with ¾ pitch, 2 in pitch diameter, and an included face angle of 60o. The coefficientof friction is 0.05. (Assume Y = 0.322) A. Determine the helix angle of the worm. Ans. 70.30o B. Determine the speed ratio. Ans. 10.33C. Determine the center distance. Ans. 4.70 inD. Determine the apparent stress in the worm wheel teeth. Ans. 31,100 psiE. Determine the efficiency of this worm-gear set. Ans. 85.70%