Question

7-25 A shaft is to be designed to support the spur pinion and helical gear shown in the figure on two bearings spaced 700 mm center-to-center. Bearing A is a cylindrical roller and is to take only radial load; bearingB is to take the thrust load of 900 N produced by the helical gear and its share of the radial load. The bearing at B can be a bal bearing. The radial loads of both gears are in the same plane, and are 2.7 kN for the pinion and 900 N for the gear. The shaft speed is 1200rev/min. Design the shaft. Make a sketch to scale of the shaft showing all fillet sizes, keyways, shoulders, and diameters. Specify the material and its heat treatment. brg 100 Problem 7-25 Dimensions in millimetens 75 400 125

Answer 1

the Spur PM10の A shabt is to le desiged ouptthe pur pIen a "co m shown in the tigure ơn two spaced helio ear Qnter to center - Beartng A ts aller ard ts to take ondy Yadial load 갸e bearing at B ar be bol beari Tre rodtial Ioacds j both Ieas ore fn the Same plane the prior and doo N Here , we need to design the shat As Per the gven pidture arove. the test -tube shped

4 3 ㄐ叩 145 25 Tre thickly written ς στ mat is the des let Si irst test tube ะ loo Second ne - 0 cdiameer (d) - 3f.ya om The material ts Spur Tổor) that helial ear Heat treatrnent . 2.q kN Thank you
i tried my best to solve this question.