Q-2 A speed-reducer has 20° full-depth teeth, and the single-reduction spur-gear gearset has the pinion and gear tooth n

[answerhappygod]

Q 2 A Speed Reducer Has 20 Full Depth Teeth And The Single Reduction Spur Gear Gearset Has The Pinion And Gear Tooth N 1 (45.45 KiB) Viewed 26 times

Q-2 A speed-reducer has 20° full-depth teeth, and the single-reduction spur-gear gearset has the pinion and gear tooth numbers as: Np = 22 and NG = 60 teeth. The module, m is 6 mm and the face width, F is 75 mm. The pinion shaft speed no = 1145 rev/min. The life goal of 5-year 24-hour-per-day service is about 3(109) pinion revolutions. The absolute value of the pitch variation is such that the quality number is 7. The materials are AISI4340 through- hardened grade 1 steels, heat-treated to 250 Brinell, core and case, for both gears. The load is moderate shock and the power is smooth. For an overall reliability of RN = 0.99, and for a safety factor of 2.5, determine the safe power handling capacity of the speed reducer. Use AGMA formulas. [40 pts.] SEE THE FORMULA SHEET ATTACHED