Compound Gear Train: Working Principle, Applications, Advantages & Disadvantages

Last Updated on May 20, 2025
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Compound Gear Train FAQ

A compound gear consists of multiple gears mounted on the same shaft rotating at the same speed. A combination of these gears in an arrangement is called a compound gear train.

The four types of gear trains are: Simple, Compound, Epicyclic, and Reverted gear train.

A compound gear can have anywhere from only two gears to ten gears based on the manufacturing requirements.

When compared with other gear trains, a compound gear train has a greater reduction from the input shaft to the output shaft even with small gears. This results in greater power transmission over a small area.

A compound gear train has gears mounted on the same shaft but these shafts are not in the same axis of rotation as the other. The reverted gear train is similar to the compound gear train but the axis of rotation of the shafts is co-axial.

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