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. At times it is identified as torque converter. In auto industry, there are many types of transmission boxes. They include the following, Spur gearboxes, helical gearboxes, bevel gearboxes, spiral gearboxes, hypoid gearboxes among others. Spur gearboxes are the mainly ordinary and straightforward transmission boxes available. The order in which their radial teeth are situated enables them to handle high gear ratios thus giving exceedingly high level of helpfulness. Spurs transmitters have their disadvantages as well. 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 competent of managing pressure due to the care used to fit feature axes in 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. However, these gears are locked at an angle, most commonly right angle. Helical gears have less load ability due to the equivalent arrangement of their teeth. Their teeth positioning, that is in helical gears, tolerate reticent engagement consequently resulting in the job that is drastically quieter than that of spur gearboxes.
The loading way of helical gear systems make them work with complex torques, even if their efficacy choice is comparable. These kinds of gearboxes have their weaknesses as well, in fact, the level of medial thrust they are using, that demands the use of sufficiently oiled shaft bearings. Spiral gearboxes are modification of bevel types, and they offer benefits comparable to helical transmission box systems with teeth that connect little by little. Gradual engagement of gear system have brought about smoother, and reduction of noise in spiral gear system rods. Thus the efficiency standards in spiral gear systems is very high. Hypoid gearboxes look a lot like spiral bevel type but their compel axes do not touch. 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 managed with this system.