Gears convert engine speed into torque and are mounted on a drive shaft. Gear reduction transfers power from the engine to the transmission mechanism, allowing the wheels to run at different speeds. Gear shafts may contain gear teeth and be made of various materials.
In their most basic form, gears are round toothed devices that convert engine speed into torque. Gears are mounted on or are part of a drive shaft. Many of the more common gears will have a hole in the center, known as a bore, through which the gear shaft is inserted. When the gear shaft is rotated, the gear also rotates.
Essentially, the gear shaft is the gear shaft, providing the rotation that allows one gear to mesh and turn another. The process is often known as gear reduction and is essential for transferring power from the engine to the transmission mechanism. The conversion of engine speed into torque is what provides the driving force that powers, for example, the wheels of an automobile. Through the gears and shafts of an automobile transmission, the engine is able to run at a constant speed, while the wheels of the car can run faster or slower, or even reverse, using the same direction and speed of rotation of the engine.
The flywheel of the normal automotive engine is connected to a drive shaft which mounts a number of gears of different sizes. Through the horizontal movement of the shaft, these main gears are engaged and disengaged by other larger and smaller gears which are also mounted on the gear shafts. Also, the drive shaft, which supplies power from the gear in an automotive transmission to the axle and drive wheels, is a very common example of a drive shaft.
Gear shafts may also contain gear teeth integrated into the shaft, thus becoming a shaft gear. Such shafts with gears at each end are called intersecting shaft gears. Bevel gears and spiral gears intersect with shaft gears. A good example of this type of gear is a helicopter rotor. An intersecting vertical shaft gear from the motor engages one or more horizontal shaft gears to spin the rotors.
The same principle applies to a car. The drive shaft is often a shaft at the drive end and an intersecting shaft gear at the differential end. This configuration allows you to convert vertical movement into horizontal movement.
A few different types of gear shafts are eccentric shafts, mating-gear shafts, splined shafts, and keyed shafts. Gears used in a heavy duty application will most likely be made of a strong metal. Other materials used to manufacture these trees are copper, aluminum and plastic. The original gear shaft, commonly found with the medieval grindstone, was made of wood.
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