In a simple planetary gear drive, the sun gear is used to give drive a plant carrier mounted with 3 planetary gears, while ring gear is held stationary. If sun gear and all other planetary gears have 20 teeth each and ring gear has 60 teeth, the gear ratio will be __________

Mechanical Power Transmission topics include: Belt drive, chain and sprocket drive, gear drive, bolts, nuts, washers, screws and rivets. Mechanical power transmission is the process of transferring energy from one place to another using mechanical components. This method uses mechanical components instead of electrical methods to direct power from a source, such as an engine or motor, to an output device.  Mechanical power transmission provides control over the speed, torque, and directionality of the conveyed force. It can be used in a variety of applications, including: Rail transit... Show more

Mechanical Power Transmission topics include: Belt drive, chain and sprocket drive, gear drive, bolts, nuts, washers, screws and rivets.

Mechanical power transmission is the process of transferring energy from one place to another using mechanical components. This method uses mechanical components instead of electrical methods to direct power from a source, such as an engine or motor, to an output device. 

Mechanical power transmission provides control over the speed, torque, and directionality of the conveyed force. It can be used in a variety of applications, including:
Rail transit assembly robot systems
Pure electric vehicles 

Some common mechanical power transmission methods include: Shaft couplings, Chain drives, Gear drives, Belt drives, Power screws (lead screws). 

Here are some types of mechanical power transmission systems:
Gears: A system composed of two or more toothed wheels that connect and interact with each other. The teeth of the gears interlock and move in concert.
Gear trains: A mechanical power transmission system where gears are installed on shafts so the teeth of the mating gears engage and each roll on each other on its pitch circle diameter. 

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