Planetary gear

5th step - symmetrical arrangement of the bevel gears to avoid bending stresses

How does a differential gear work?

Learn more about the design, function and application of a differential gear and the differential lock in this article. https://youtu.be/HY3ZnjZtrQw Why does a car need a differential gear? In automobiles, the wheels are usually...
Carrier of a three-speed gear hub

How does a three-speed gear hub work?

Learn more about the structure and function of the planetary gear in a three-speed gear hub in this article. https://youtu.be/8R3xzAdxYIc Assembly and function The figure below schematically shows the assembled components of a three-speed...
Relationship between the pitch circle diameters and the number of teeth

Derivation of Willis equation (fundamental equation of planetary gears)

The Willis equation describes the motion of the individual gears of a planetary gearbox (epicyclic gear). https://youtu.be/oXD9uJb_TOg Superposition of motions The change in speed of planetary gearboxes are no longer as easy to understand...
Planetary gear

How does a planetary gear work?

A planetary gear is an epicyclic gear in which several gears (planet gears) mesh with a central gear (sun gear). https://youtu.be/cKjWcUvZuhM Stationary gearbox So-called stationary gearboxes are characterised by the fact that the gear wheels...