A commercial enclosed helical gear transmission has a reduction ratio of 5 transmitting 3.5 kW of power. A pinion rotate

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A Commercial Enclosed Helical Gear Transmission Has A Reduction Ratio Of 5 Transmitting 3 5 Kw Of Power A Pinion Rotate 1 (44.58 KiB) Viewed 44 times

similar to spur gear design but differs in how some factors are calculated. This is chapter 14 in Shigley's Mechanical Engineering book 10th ed!
A commercial enclosed helical gear transmission has a reduction ratio of 5 transmitting 3.5 kW of power. A pinion rotates at 1500 rpm and has 30 teeth, a 200 pressure angle, a helix angle of 25', a module of 1.5 mm and a face width of 45 mm. The pinion and gear material is through-hardened steel of Grade I with HB 200, a modulus of elasticity of E = 200 GPa and Poisson's ratio of 0.30. The gear teeth are uncrowned, and manufactured to a No.6 quality standard. The overload factor is 1. Assume a pinion life of 108 cycles and a reliability of 0.90, use Yn =1.3558 N-0.0178 and Zn=1.4488 N-0023 3.1 3.2 Determine the AGMA bending and contact stresses for the gear. Determine the AGMA bending and contact strengths for the gear. Determine the safety factors for bending and contact loadings for the gear. (11) (11) (2) 1241 3.3