Gearbox is also known as the transmission box which is the second component of the power in an automobile. The the main function of the gear system is to change the torque and the speed of the vehicle, according to the road and load conditions. Transmission box adjust the engine speed into torque as it moves up the hills and when it’s important for the auto to do so. Gearbox can also be defined as the torque converter. In auto industry, there are many types of transmission boxes. Actually they include the following, spiral gearboxes, bevel gearboxes, spur gearboxes, hypoid gearboxes and helical gearboxes among others. Spur gear systems are the largely reasonable and direct gearboxes available. The order in which their radial teeth are situated enables them to handle high gear ratios thus giving exceedingly high level of helpfulness. Spur gearboxes have their demerits also. They usually tend to create a lot of pressure and noise, and that the reason why they are generally desirable used for low-speed and low-impact jobs where loud noise is tolerable. Bevel transmission boxes are made up of bridge rods and cone-style that support versatile movement in the area directly linking these shafts. They are capable of handling a sizeable amount of pressure because of the element axes and the care used to install them. Bevel gear systems have lesser effectiveness levels than spur and helical transmission boxes. The bevel gearboxes do work correctly with lesser gear ratios, perhaps even more efficient than their helical counterpart. Helical gear systems often considered to be like spur gears however their teeth are not positioned in a crossway manner to the revolving shaft. These helical gears are typically placed at an angle, which is right angle position. Helical gears have less load ability due to the equivalent arrangement of their teeth. Helical gear teeth positioning permits for self-effacing engagement thus guarantee a work that is considerably softer than that of spur gear systems.
The loading way of helical gear systems make them work with complex torques, even if their efficacy choice is comparable. These types of transmission boxes have limitations too. The standard of medial push they utilize, require the use of enough oiled shaft bearings. Spiral transmission boxes are adjustment of bevel gear system, and they give benefits equal to helical gearbox systems with teeth that join bit by bit. The engagement of gear system bit by bit in spiral gear systems has caused a reduction of noise and smoothness in the system shafts. Hence their efficiency level is very high. Hypoid gear systems resembles the spiral bevel kind though their compel axes only do not contact. They work well with right angle drive shaft, they produce less noise, and they are stronger than spiral bevel transmission boxes. High-speed ratio can be handled with this system.