A gear drive proposal consists of a 20 pressure angle spur pinion with 25 teeth driving...

 

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A gear drive proposal consists of a 20° pressure angle spur pinion with 25 teeth driving a 35- tooth gear. The module of the gears is 2.5 and the face width is 30mm. The pinion runs at 500 rpm. The gear set is to transmit 1.2 kW and the load and drive can be considered smooth. The gear material proposed is grade 1 steel and the Brinell hardness of the pinion and gear is 240 and 200, respectively. The gears are to be manufactured to number 6 AGMA quality standard and the teeth are uncrowned. The gears are straddle mounted within an enclosed unit. Assume a pinion life of 108 cycles and a reliability of 90 %. Calculate the AGMA bending and contact stresses and the corresponding factors of safety for both the pinion and the gear A gear drive proposal consists of a 20° pressure angle spur pinion with 25 teeth driving a 35- tooth gear. The module of the gears is 2.5 and the face width is 30mm. The pinion runs at 500 rpm. The gear set is to transmit 1.2 kW and the load and drive can be considered smooth. The gear material proposed is grade 1 steel and the Brinell hardness of the pinion and gear is 240 and 200, respectively. The gears are to be manufactured to number 6 AGMA quality standard and the teeth are uncrowned. The gears are straddle mounted within an enclosed unit. Assume a pinion life of 108 cycles and a reliability of 90 %. Calculate the AGMA bending and contact stresses and the corresponding factors of safety for both the pinion and the gear

Answer rating: 100% (QA)

Calculating AGMA Bending and Contact Stresses for a Gear Drive Given Pressure angle 20 Pinion teeth Np 25 Gear teeth Ng 35 Module m 25 mm Face width b ... View the full answer