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A helical gear reducer is to be used with a 1500 rpm electric motor and a 500 rpm load which involves a moderate amount of shock The 25 tooth pinion has

  1. A helical gear reducer is to be used with a 1500-rpm electric motor and a 500-rpm load which involves a moderate amount of shock. The 25-tooth pinion hasPn=8, b=1.8 in.,fn=20°, andc=26°. Both gears are made of AISI 8620 steel, with surfaces carburized to give properties listed in Appendix C-7. Manufacturing preci- sion corresponds to curveBof Chapter 15, Figure 15.24. Estimate the horsepower that can be transmitted for 107pinion revolutions with 99% reliability and a safety factor of 2. Check for both bending and surface fatigue

 

Jun 22 2020 View more View Less

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