[Basic terms of gears] Mating gears Mating gears

Any one of the gears in the gear pair can be referred to as the matching gear of the other gear in the gear pair.

Among the two gears of the gear pair, the gear with the less number of teeth.

Of the two gears of the gear pair, the gear with the larger number of teeth.

One ​​of the gear pairs is used to drive the gear of its counterpart gear.

The gear in a gear pair driven by its counterpart gear.

Planet carrier  planet carrier

The component supporting the planetary gears.

In planetary gear transmission, an external gear that has the same axis as the planet carrier.

In planetary gear transmission, the internal gear with the same axis as the planet carrier.