Automotive gears transmit torque and rotation through an angle from a power source to the driven member. Extreme pressure gear oil is a lubricant for automotive gears and bearings.
Automotive gears are machined from wrought bar stock and subsequently heat treated to develop the required surface hardness and tooth bending fatigue durability.
Automotive gear ratio is the number of turns of the drive wheels in relation to the number of turns of the engine. If the engine is considered the input and the drive wheel is considered to be the output then the input gear or the pinion is said to mate with the output gear or the ring gear to drive or rotate it.
Importance of Gears in Automotive Industry
Gears play an important role in trucks, car, buses, motor bikes and even geared cycles. These gears control speed and include gears like ring and pinion, spiral gear, hypoid gear, hydraulic gears, reduction gearbox.
Depending on the size of the vehicles, the size of the gears also varies. There are low gears covering a shorter distance and are useful when speed is low. There are high gears also with larger number of teeth. These high gears cover a longer distance with one revolution of pedal.