An overhung cast iron pulley transmits 7.5 kW at 400 r.p.m. The belt drive is vertical and the angle of wrap may be taken as 180°. Find: (a) Diameter of the pulley. The density of cast iron is 7200 kg/m3. (b) Width of the belt, if the coefficient of friction between the belt and the pulley is 0.25. (c) Diameter of the shaft, if the distance of the pulley centre line from the nearest bearing is 300 mm (d) Dimensions of the key for securing the pulley on to the shaft. (e) Size of the arms six in number. The section of the ams may be taken as elliptical, the major axis being twice the minor axis. The following stresses may be taken for design purposes: Shaft and key: Tension- 80 MPa Shear – 50 MPa : Tension - 2.5 MPa : Tension - 4.5 MPa : Tension - 15 MPa Belt Pulley rim Pulley arms

An overhung cast iron pulley transmits 7.5 kW at 400 r.p.m. The belt drive is vertical and the angle of wrap may be taken as 180°. Find: (a) Diameter of the pulley. The density of cast iron is 7200 kg/m3. (b) Width of the belt, if the coefficient of friction between the belt and the pulley is 0.25. (c) Diameter of the shaft, if the distance of the pulley centre line from the nearest bearing is 300 mm (d) Dimensions of the key for securing the pulley on to the shaft. (e) Size of the arms six in number. The section of the ams may be taken as elliptical, the major axis being twice the minor axis. The following stresses may be taken for design purposes: Shaft and key: Tension- 80 MPa Shear – 50 MPa : Tension - 2.5 MPa : Tension - 4.5 MPa : Tension - 15 MPa Belt Pulley rim Pulley arms

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Similar questions

In a belt arrangement two pulleys are connected by flat belts having same diameters. Themaximum force on the tight side of belt is 662 N. If co-efficient of friction is 0.3 thenwhat is maximum force on the slack side of the belts?
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