Answer to Question #298829 in Mechanical Engineering for Robz

Question

in a three-wheel planetary gear, the sun gear has 19 teeth and the planet wheels 17 teeth each. The teeth are not profiled. The energy is fed in via the sun wheel and taken out via the planetary bar. The load must be driven with a power of 1,000 W and rotated at a speed of 1,200 rpm. The efficiency between sun gear and planet gear is assumed to be 0.98 and between planet gear and ring gear to 0.96

1. How many teeth does the outer sun gear have?
2. What gear ratio does the gear have?
3. What is the efficiency of the gear unit??
4. What speed should the engine rotate with?
5. What torque must the engine deliver?

Answer 1

Answer is given below