The worm shaft shown in part a of the figure transmits 1.2 hp at 500 rev/min. A static forceanalysis gave the results shown in part b of the figure. Bearing A is to be an angular-contact ballbearing selected from Table 11–2, mounted to take the 555-lbf thrust load. The bearing at B isto take only the radial load, so an 02-series cylindrical roller bearing from Table 11–3 will beemployed. Use an application factor of 1.2, a desired life of 30 kh, and a combined reliabilitygoal of 0.99, assuming distribution data from manufacturer 2 in Table 11-6. Specify eachWom pitch cylinderGear pitch cylinder(a) Worm and wom gear,h) force analysis of wom shaftkrces in pounds.5957235145bearing.

Answered: Image /qna-images/answer/94065348-eeec-486e-ba23-1634db3e3a7f.jpg

Answered: The worm shaft shown in part a of the…

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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A line shaft supporting two pulleys A and B is shown in figure below. Power is supplied to the shaft by means of a vertical belt on the pulley A, which is then transmitted to the pulley B carrying a horizontal belt. The ratio of belt tension on tight and loose sides is 3:1. The limiting value of tension in the belts is 2.7 kN. The shaft is made of plain carbon steel 40C8 (Sut = 650 N/mm2 and Syt = 380 N/mm2). The pulleys are keyed to the shaft. Determine the diameter of the shaft if, k = 1.5 and k, = 1.0. (Sm valing odi of 450 A B 2500 22.0=1821 P3 4500 250 ₁ 4500 P1 A P₂ P4
Problem 2 (Dimensions in mm.) The brake shown in the figure has a coefficient of friction of 0.30, a face width of 75 mm, and a limiting shoe lining pressure pV = 1.7 MPa x m/s. Find the limiting actuating force F and the torque capacity. IN 130° 125-125- 30° Rotation 30° 250R 20° 20° 75 75 130° 400. 100 300 300
Design the size of a solid shaft for a 500 hp, 250 rpm if the allowable torsional deflection is 1 degree. Use C1045 as rolled steel for medium shock loading.
b) Design a single row deep groove ball bearing with basic dynamic load rating of 33 KN to be used in a turbine to carry a radial load of 1584 N. The expected life of the bearing is 5591 hours at 529 rpm. Take k=3 for all types of ball bearings. Take the value of the shock load factor as 1.8. The radial and axial load factors are 1.3 and 1.6 respectively and the rotational factor is 1. Calculate: i) Expected life of bearings in millions of revolutions ii) Design equivalent dynamic load in N iii) Basic equivalent dynamic load in N iv) Axial load acting on the bearing in N
A machine operated for 8 hrs a day under light impact is fitted with a shaft with bearings fitted at A and B. The shaft requires a design life of 25 000 hours at a speed of 475 rpm. The load on the shaft is indicated in the figure. The reliability goal for the shaft is 95%. Determine the following: Multiple of rating life required (Xp) b. а. Catalogue rating (C10) Specify a suitable 02-series deep groove ball bearing d. c. The actual shaft reliability The maximum speed that the bearing should be applied at to ensure a life of 40 000 hrs at the same reliability. е. 3000 N 5000 N 500 mm 450 mm 600 mm A В
Machine design
A rigid coupling with 30 inches of bolt circle diameter transmits a torque of 18,000 lb-in. The coupling material has a yield strength of 90,000 psi. The coupling is fastened by six bolts. Assume design factor of N=3 Calculate the diameter of each bolt.
A steel spur pinion has 16 teeth cut on the 20° full-depth system with a module of 8 mm and a face width of 90 mm. The pinion rotates at 150 rev/min and transmits 5 kW to the mating steel gear. This pinion is to mesh with a steel gear with a gear ratio of 4:1. The Brinell hardness of the teeth is 200, and the tangential load transmitted by the gears is 5 kN. If the contact fatigue strength of the steel can be estimated from the AGMA formula of Sc= 2.22 HB + 200 MPa, estimate the factor of safety of the drive based on a surface fatigue failure. The factor of safety of the drive is
Solve correctly please.
The picture shows the rear swivel axle bearing design of a 4-wheel wagon. It is known that the speed of the wagon wheels is n = 37 rpm. The total radial load carried by the wagon is given as Fr= 16060 Newtons. In addition, due to road conditions, Fa axial load is applied to the wagon. If the axial load on the A bearing is 10% of the radial (vertical) load on this bearing, calculate the dynamic load number (C) of the bearing in the A bearing in Newtons for 18616 hours of life. fo*Fa/Co = 0.345 Pi=3.14
A Self-aligning medium series bearing for bores of 85 mm is operating at 300 r.p.m for an average life of 9 years at 10 hours per day, is acted by a 15 kN radial load and 10 kN thrust load. The bearing is subjected to a light shock load and the inner ring is sationary. Determine the suitable self-aligning bearing. Mention the advantage of using self align bearing.
1. A 10 hp. 1400 rpm motor uses a roller chain to drive a line-shaft at 400 rpm with a center to center distance of 2 ft. The motor shaft has a diameter of 1 % inches and the load applied is moderate shock. Determine the approximate length of the chain.

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