4.GA micarta pinion rotating at 1200 r.p.m. is to transmit 1 kW to a cast iron gear at a speed of 192 r.p.m.Assuming a starting overload of 20% and using 20° full depth involute teeth, determine the module,number of teeth on the pinion and gear and face width. Take allowable static strength for micarta as 40MPa and for cast iron as 53 MPa. Check the pair in wear.

Answered: 4. G A micarta pinion rotating at 1200…

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 helical cast steel gear with 30o helix angle has to transmit 35 kW at 2000 rpm. If the gears has 25 teeth, find the necessary module, pitch diameters and face width for 20o full depth involute teeth. The static stress for cast steel may be taken as 100 MPa. The face width may be taken as 3 times to normal pitch. The tooth form factor is given by the expression y'= 0.154-0.912/TE, where TE represents the equivalent number of teeth. the velocity factor is given by Cv=6/(6+v), where v is the peripheral speed of the gear in m/s.
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A helical cast steel gear with 30° helix angle has to transmit 35 kW at 2000 r.p.m. If the gear has 25 teeth, find the necessary module, pitch diameters and face width for 20° full depth involute teeth. The static stress for cast steel may be taken as 100 MPa. The face width may be taken as 3 times the normal pitch. The tooth form factor is given by the expression y'=0.154– 0.912/T; , where Tg represents the equivalent num- ber of teeth. The velocity factor is given by C, where 6 + v v is the peripheral speed of the gear in m/s.
Helical Gears, Bevel Gears, and Wormgearing 2
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