Engineering, 27.08.2020 04:01 sierraseideman1023

Help me please. I need to solve it in half an hour Ex: It is required to design a spur gear speed reducer for a compressor running at 250rpm driven by 7.5 kW, 1000rpm electric motor. The center distance between the axes of the gear shafts should be exactly 250mm. The starting torque of the motor can be assumed to be 150% of the rated torque. The gears are made of carbon steel (SAE2345).The pressure angle
is 20°. The factor of safety is 2 for preliminary design .Assume that the number of teeth for pinion between 20 to 30 teeth and the face width is ten times the module.
1. Design the gears and specify their dimensions.
2. What is the bending strength in this case?

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