Planetary gear sets are smaller and more compact, and this limits heat dissipation. To keep the gears cool, the lubricant can be sent through a heat exchanger, or a cooling fan can be designed in.

Learn about what planetary gears are and how they work. Our Guides & Gear editors have dropped their cumulative knowledge about planetary gears here for all to read.

It's called the planetary gear set and the way it works will have your head swimming in concentric circles. That is, until you watch this wonderful classic video that provides a clear view of ...

Compound planetary gear sets multiply the basic setup by two or more to achieve multiple drive gear ratios.

This week’s film explains that multiple sets of planetary gear systems in differing sizes are used to gear automobiles for different forward speeds as well as reverse operation.

Actually, this is not the first laser-cut planetary gear clock that we have seen. In case you are wondering about the advantages of planetary gearboxes, you might want to check out how a 3D ...

The rather interesting tech involves three planetary gear sets – each doing the usual dance with a sun gear, ring gear and planetary carrier – plus three "selectively engagable" clutches that ...

Additionally, the patent highlights the coaxial arrangement of the electric machine and planetary gear sets, optimizing the overall design of the electric drive axle.