. A shaft has three eccentrics, each 75 mm diameter and 25 mm thick, machined in one piece withthe shaft. The central planes of the eccentric are 60 mm apart. The distance of the centres from theaxis of rotation are 12 mm, 18 mm and 12 mm and their angular positions are 120° apart. Thedensity of metal is 7000 kg/m2.Find the amount of out-of-balance force and couple at 600 r.p.m. If the shaft is balanced by addingtwo masses at a radius 75 mm and at distances of 100 mm from the central plane of the middleeccentric, find the amount of the masses and their angular positions.n.3- Explain, how can you eliminate interference in gears?

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- A shaft has three eccentrics, each 75 mm diameter and 25 mm thick, machined in one piece with the shaft. The central planes of the eccentric are 60 mm apart. The distance of the centres from the axis of rotation are 12 mm, 18 mm and 12 mm and their angular positions are 120° apart. The density of metal is 7000 kg/m³. Find the amount of out-of-balance force and couple at 600 r.p.m. If the shaft is balanced by adding two masses at a radius 75 mm and at distances of 100 mm from the central plane of the middle eccentric, find the amount of the masses and their angular positions.

- A shaft has three eccentrics, each 75 mm diameter and 25 mm thick, machined in one piece with the shaft. The central planes of the eccentric are 60 mm apart. The distance of the centres from the axis of rotation are 12 mm, 18 mm and 12 mm and their angular positions are 120° apart. The density of metal is 7000 kg/m³. Find the amount of out-of-balance force and couple at 600 r.p.m. If the shaft is balanced by adding two masses at a radius 75 mm and at distances of 100 mm from the central plane of the middle eccentric, find the amount of the masses and their angular positions.

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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Concept explainers

Design of Shafts and Shaft Components

The shaft is basically defined as the machine element that rotates, is in circular cross-section, it is majorly used to transfer the power from one part of the system to another, or from a power generating machine to a power absorbing machine. The shaft is supported on bearings and is rotated with the help of a set of gears or pulleys that are used for the power transmission. Bending moment, torsion, and an axial force act upon the shaft. Designing of shaft primarily involves determining stresses at a critical point in the shaft that is arising due to loading.

Question

. A shaft has three eccentrics, each 75 mm diameter and 25 mm thick, machined in one piece with
the shaft. The central planes of the eccentric are 60 mm apart. The distance of the centres from the
axis of rotation are 12 mm, 18 mm and 12 mm and their angular positions are 120° apart. The
density of metal is 7000 kg/m2.
Find the amount of out-of-balance force and couple at 600 r.p.m. If the shaft is balanced by adding
two masses at a radius 75 mm and at distances of 100 mm from the central plane of the middle
eccentric, find the amount of the masses and their angular positions.
n.
3- Explain, how can you eliminate interference in gears?

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