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A 57-tooth spur gear is in mesh with a 23-tooth pinion. The gearset transmits 125 hp at 1000 pinion rpm. Size the spur gears for a bending failure safety factor of at least 2 assuming a steady torque, 25∘ pressure angle, full-depth teeth, Qν = 9, an AISI 4140 steel pinion, and a class 40 cast iron gear. Part A Find the appropriate standard diametral pitch for the gearset. Part B Find the minimum required face width of the gears needed to satisfy the safety requirements

A 57-tooth spur gear is in mesh with a 23-tooth pinion. The gearset transmits 125 hp at 1000 pinion rpm. Size the spur gears for a bending failure safety factor of at least 2 assuming a steady torque, 25∘ pressure angle, full-depth teeth, Qν = 9, an AISI 4140 steel pinion, and a class 40 cast iron gear. Part A Find the appropriate standard diametral pitch for the gearset. Part B Find the minimum required face width of the gears needed to satisfy the safety requirements

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
Problem 1.1MA
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A 57-tooth spur gear is in mesh with a 23-tooth pinion. The gearset transmits 125 hp at 1000 pinion rpm. Size the spur gears for a bending failure safety factor of at least 2 assuming a steady torque, 25∘ pressure angle, full-depth teeth, Qν = 9, an AISI 4140 steel pinion, and a class 40 cast iron gear.

Part A

Find the appropriate standard diametral pitch for the gearset.

Part B

Find the minimum required face width of the gears needed to satisfy the safety requirements

Part A A 57-tooth spur gear is in mesh with a 23-tooth pinion. The gearset transmits 125 hp at 1000 pinion rpm. Size the spur gears for a bending failure safety factor of at least 2 assuming a steady torque, 25° pressure angle, full-depth teeth, Qy = 9, an AISI 4140 steel pinion, and a class 40 cast iron gear. Find the appropriate standard diametral pitch for the gearset. Express your answer in reciprocal inches to three significant figures. På = 3.00 in-1 Submit Previous Answers All attempts used; correct answer displayed Part B Find the minimum required face width of the gears needed to satisfy the safety requirements. Round this value up to the decimal equivalent of a common fractional value. Express your answer in inches to four significant figures. F = 4.25 in
Transcribed Image Text:Part A A 57-tooth spur gear is in mesh with a 23-tooth pinion. The gearset transmits 125 hp at 1000 pinion rpm. Size the spur gears for a bending failure safety factor of at least 2 assuming a steady torque, 25° pressure angle, full-depth teeth, Qy = 9, an AISI 4140 steel pinion, and a class 40 cast iron gear. Find the appropriate standard diametral pitch for the gearset. Express your answer in reciprocal inches to three significant figures. På = 3.00 in-1 Submit Previous Answers All attempts used; correct answer displayed Part B Find the minimum required face width of the gears needed to satisfy the safety requirements. Round this value up to the decimal equivalent of a common fractional value. Express your answer in inches to four significant figures. F = 4.25 in
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