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A herringbone speed reducer consists of a 26 teeth pinion driving a 104 teeth gear. The gears have a normal module of 2 mm. The pressure angle is 20° and the helix angle is 25°. The pinion receives 100 kW power through its shaft and rotates at 3600 rpm. The face width of each half is 35 mm. The gears are made of alloy steel 30Ni4Cr1 (S = 1500 N/mm²) and heat treated to a surface hardness of 450 BHN. The service factor is 1.25. Determine the factor of safety against bending failure and against pitting failure.

A herringbone speed reducer consists of a 26 teeth pinion driving a 104 teeth gear. The gears have a normal module of 2 mm. The pressure angle is 20° and the helix angle is 25°. The pinion receives 100 kW power through its shaft and rotates at 3600 rpm. The face width of each half is 35 mm. The gears are made of alloy steel 30Ni4Cr1 (S = 1500 N/mm²) and heat treated to a surface hardness of 450 BHN. The service factor is 1.25. Determine the factor of safety against bending failure and against pitting failure.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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A herringbone speed reducer consists of a 26 teeth pinion driving a 104 teeth gear. The gears have a normal module of 2 mm. The pressure angle is 20° and the helix angle is 25°. The pinion receives 100 kW power through its shaft and rotates at 3600 rpm. The face width of each half is 35 mm. The gears are made of alloy steel 30Ni4Crl (S, 1500 N/mm?) and heat treated to unt a surface hardness of 450 BHN. The service factor is 1.25. Determine the factor of safety against bending failure and against pitting failure.
Transcribed Image Text:A herringbone speed reducer consists of a 26 teeth pinion driving a 104 teeth gear. The gears have a normal module of 2 mm. The pressure angle is 20° and the helix angle is 25°. The pinion receives 100 kW power through its shaft and rotates at 3600 rpm. The face width of each half is 35 mm. The gears are made of alloy steel 30Ni4Crl (S, 1500 N/mm?) and heat treated to unt a surface hardness of 450 BHN. The service factor is 1.25. Determine the factor of safety against bending failure and against pitting failure.
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