A small motor pinion gear is usually the smallest gear in the gear train at the input and handles the least amount of torque. It is usually be mounted onto a shaft and transmit power indirectly to the output gear.
A gear is a toothed wheel designed to transmit force to another gear or toothed component. The teeth of a gear can be shaped to minimize wear, vibration and noise, and to maximize the efficiency of power transmission.
Gears of differing size are often used in pairs for a mechanical advantage, allowing the torque of the driving gear to produce a larger torque in the driven gear at lower speed, or a smaller torque at higher speed. Various sizes as follow.
Features:
1. Good Tensile strength
2. High impact and notching impact strength
3. Good glide and limp home characters
4. Good chemical stability against organic solvents and fuels
5. Size alternation by humidity absorption must be considered