For the geared countershaft with an overhanging pinion at C, the force on gear A is FA = 600 Ibf, and the shaft isto run at a speed of 420 rev/min. Consider an application factor of 1.2, a desired life of 40 kh, and combinedreliability goal of 0.95Select and specify the bearing requireda) An angular contact ball bearing for mounting at O andb) A straight roller bearing for mounting at BGear 324 dia.Gear 410 dia.20

Solution : Given data : F_A = 600 lbf N = 420 rev/min from table 11-2 for…

Answered: a) An angular contact ball bearing for…

Engineering

Mechanical Engineering

a) An angular contact ball bearing for mounting at O a b) A straight roller bearing for mounting at B

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

See similar textbooks

Similar questions

campute the bending stress number for the goer pair described by the given data beLow. KS= 1, Km= 1,21, F= 2.00 in, DP= 3,33 in, NG= 70, Np=20 hp = 1750v. p.m, Av=11, Pd =6, Tp= 900ib V1= 1527 ft/min The matarial used for pinion a gear is cast iron
Problem 13.049 - Bearing Reactions for Beveled Gears The figure shows a 16T 20° straight bevel pinion driving a 32 T gear and the location of the bearing centerlines. Pinion shaft a receives 2 hp at 200 rev/min. Determine the bearing reactions at A if it is to take both radial and thrust loads. Problem 13-43 Dimensions in inches. The bearing reaction due to radial load FA, radial is | B 4 Ibf and the bearing reaction due to thrust load FA, thrust is Ibf.
Question 1: The figure shows a 16T 20° straight bevel pinion driving a 32T gear, and the location of the bearing centerlines. Pinion shaft a receives 2.5 hp at 248 rev/min. Determine the bearing reactions at A and B if A is to take both radial and thrust loads. On-Screen Keyboard Esc 1 3. 4 5 6.
Figure below shows a portion of a pump that is gear-driven at uniform load and speed. The 25 mm diameter solod shaft supported by the bearings is to be made of machined AISI 1045 CD steel. The helical gear is subjected to the axial force F-498 y a radial load F- 750 N and a tangential load of F-1.995 N. Assume the component is g at room temperature of 70F and the material has s0s reliability factor. Hint: Be careful when you calculate the bending moment at the fillet, as all the three forces on the helical gear cause bending moment at the fillet. Calculate resultant bedina moment from all the three forces. Bending moment is completely reversed loading.) 25-mm solid round shaft Fillet Bending K, = 2.0 Torsional k, = 1.5 Axial K,18 F. F, F Pump Helical spur gear -50 mm -250-mm dia FIGURE 1. Identify the critical locations) of stress and show it clearly in a diagram. 2 Identity cleary, all the components of stresses (at the critical point) that will be calcurated (by drawing and clearty…
The design load on a ball bearing is 413 lbf and an application factor of 1.2 is appro- priate. The speed of the shaft is to be 300 rev/min, the life to be 30 kh with a reliability of 0.99. What is the C10 catalog entry to be sought (or exceeded) when searching for a deep-groove bearing in a manufacturer's catalog on the basis of 106 revolutions for rat- ing life? The Weibull parameters are xo = 0.02, (0 – xo) = 4.439, and b = 1.483. %3D
Q3:- A pinion of 20 teeth is in mesh with an internally toothed wheel with 80 teeth. The teeth have involute profile with pressure angle of 20° and the module is 5 mm. The addendum on the wheel is as large as possible to avoid interference and the contact ratio is to be 2.0. Find the addendum length of the wheel and pinion. 04. Tuuo n OvO 1 O and 2
8)A 35 kW motor running at 1200 r.p.m. drives a compressor at 780 r.p.m through a 90° bevel gearing arrangement. The pinion has 30 teeth. The pressure angle of teeth is 14 1/2°. The wheels are capable of withstanding a dynamic stress, 280 140 MPa, 280 +v where v is the pitch line speed in m /min. The form factor for teeth may be taken as: 0.686 0.124 - TE where TE is the number of teeth equivalent of a spur gear. The face width may be taken as % of the slant height of pitch cone. Determine for the pinion, the module pitch, face width, addendum, dedendum, outside diameter and slant height.
A simple gear train of 30 and 50 teeth for pinion and gear wheel respectively, is used to drive an electric wheelchair at a velocity that is double the maximum velocity of slip. The pinion has an equal addendum as the gear wheel, a module of 3 mm, and a pressure angle of 14.5o. The wheelchair has a maximum velocity of 5 m/s when its pinion rotates at 800 r.p.m. Calculate The contact ratio.
Q8:- An epicyclic gear speed reduction is shown in the Fig. below. The driving shaft carries on the arm A a pin on which the compound wheels B and C are free to revolve. Wheel C meshes with the fixed wheel E and wheel B meshes with the wheel D which is keyed to the driven shaft. The number of teeth on the wheels are:- Zg=27, Z,=30, Zp=24 and ZĘ=21. Find the ratio of the speed of the driving shaft to the speed of the driven shaft. A Input output E
Problem 4. A 16-tooth 240 Bhn steel spur pinion having a pressure angle of 20° and rotating at 720 rev/min drives a 28-tooth 240 Bhn steel gear having a 2.5 -in face and a diametral pitch of 5 teeth/in. Find the factor of safety of this drive based on bending strength if 17.5 hp is transmitted. Use Ko=Ks=1, Km=1.6 and Qv=7.
= Q.3: Calculate the power that can be transmitted safely by a pair of spur gears with the data given below and calculate also, the bending stresses induced in the two wheels when the pair transmits this power. Number of teeth in the pinion 20, Number of teeth in the gear = 80, Module = 4 mm, and Width of teeth = 60 mm, Tooth profile involute, Allowable bending strength of the material;( 200 MPa, for = 400 r.p.m and pinion) and (160 MPa, for gear), Speed of the pinion Service factor = 0.8. = 20° Q.4: Design a wire rope for an elevator (Miscellaneous hoists) in a building of (60 m) height, for a total load (20 kN). The speed of the elevator is (240 m/min) and the full speed is reached at (10 sec). Taken the grade wire is (110), the safety factor is 2.5 and Er =84 x 103 N/mm².
A commercial enclosed spur gearset has 22 teeth on the pinion and 60 teeth on the gear. The pressure angle is 20° and the overload factor Ko =1. The diametral pitch is 8 teeth/in and the face width is 5 in. The pinion speed is 1000 rev/min and its cycle life is to be 10° revolutions at a reliability R =0.50. The quality number is 5 and the tooth are crowned. The material is a through-hardened steel, grade 2, with Brinell hardnesses of 250 core and case of both gears. For a conservative design and bending stress design factor of 2, rate the pinion (power) for these conditions using the AGMA method.