# complex mechanical design of shaft

May 3rd, 2015
HelloWorld
Category:
Engineering
Price: \$35 USD

Question description

A solid steel shaft is supported on two bearings 1.8 m apart and rotates at 250

r.p.m. A 20° involute gear D, 300 mm diameter is keyed to the shaft at a distance of 150 mm to the left

on the right hand bearing. Two pulleys B and C are located on the shaft at distances of 600 mm and

1350 mm respectively to the right of the left hand bearing. The diameters of the pulleys B and C are

750 mm and 600 mm respectively. 30 kW is supplied to the gear, out of which 18.75 kW is taken off at

the pulley C and 11.25 kW from pulley B. The drive from B is vertically downward while from C the

drive is downward at an angle of 60° to the horizontal. In both cases the belt tension ratio is 2 and

the angle of lap is 180°. The combined fatigue and shock factors for torsion and bending may be

taken as 1.5 and 2 respectively.

Design a suitable shaft taking working stress to be 42 MPa in shear and 84 MPa in tension

## Tutor Answer

(Top Tutor) Daniel C.
(997)
School: Boston College
PREMIUM TUTOR

Studypool has helped 1,244,100 students

## Review from our student for this Answer

SoccerBoss
May 3rd, 2015
"awesome work thanks"
Ask your homework questions. Receive quality answers!

Type your question here (or upload an image)

1825 tutors are online

Brown University

1271 Tutors

California Institute of Technology

2131 Tutors

Carnegie Mellon University

982 Tutors

Columbia University

1256 Tutors

Dartmouth University

2113 Tutors

Emory University

2279 Tutors

Harvard University

599 Tutors

Massachusetts Institute of Technology

2319 Tutors

New York University

1645 Tutors

Notre Dam University

1911 Tutors

Oklahoma University

2122 Tutors

Pennsylvania State University

932 Tutors

Princeton University

1211 Tutors

Stanford University

983 Tutors

University of California

1282 Tutors

Oxford University

123 Tutors

Yale University

2325 Tutors