- 12 12 A 22 Tooth Helical Pinion Has A Normal Pressure Angle Of 20 A Normal Diametral Pitch Of 8 Teeth In A Face Widt 1 (23.93 KiB) Viewed 17 times
12.12 A 22-tooth helical pinion has a normal pressure angle of 20°, a normal diametral pitch of 8 teeth/in., a face widt
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12.12 A 22-tooth helical pinion has a normal pressure angle of 20°, a normal diametral pitch of 8 teeth/in., a face widt
12.12 A 22-tooth helical pinion has a normal pressure angle of 20°, a normal diametral pitch of 8 teeth/in., a face width of 2 in., and a helix angle of 25°; it rotates at 1800 rpm and transmits 30 hp to a 40-tooth gear. Determine the factor of safety based on bending strength, employing the Lewis equation. Given: Fatigue stress-concentration factor Kr= 1.5. Assumption: The pinion and gear are both steel, hardened to 250 Bhn.