Gear train

Illustration from Army Service Corps Training on Mechanical Transport, (1911), Fig. 112 Transmission of motion and force by gear wheels, compound train

2 gears and an idler gear on a piece of farm equipment, with a ratio of 42/13 = 3.23:1

A gear train is a mechanical system formed by mounting gears on a frame so that the teeth of the gears engage.

Gear teeth are designed to ensure the pitch circles of engaging gears roll on each other without slipping, providing a smooth transmission of rotation from one gear to the next.

单词	Velocity ratio
释义	Velocity ratio 英语百科 Gear train A gear train is a mechanical system formed by mounting gears on a frame so that the teeth of the gears engage. Gear teeth are designed to ensure the pitch circles of engaging gears roll on each other without slipping, providing a smooth transmission of rotation from one gear to the next.
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Velocity ratio

Gear train