The Most Common Gearbox Types Gearbox which can be called transmission box is an element of power in auto. The adjustment of speed and torque of the automobile depends on the gear system but also according to the load and road condition. Gear system helps to change the speed of the vehicle into torque as it ascends to the hills, which are very import to the cars to. At times it is identified as torque converter. There are numerous types of gear systems in the automobile industries. They include the following, Spur gearboxes, helical gearboxes, bevel gearboxes, spiral gearboxes, hypoid 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 gearboxes consist of cone-style teeth and crossing shafts that hearten versatile movement in the area straight between these shafts. They can manage a considerable amount of pressure due to the feature axes and how they are fitted with care. Bevel gear systems have lesser effectiveness levels than spur and helical transmission boxes. The bevel transmission boxes do work well with smaller gear ratios, conceivably, even more, better than helical gear systems. Helical transmission boxes do look like spur gears although their teeth are not placed in a crossway order in the revolving axis. These helical gears are typically placed at an angle, which is right angle position. They have less load capacity due to the parallel positioning 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 directions of helical transmission boxes allow them to work with advanced torques, even if their effectiveness ranges are similar. 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 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. The effectiveness level of the spiral systems is very high. Hypoid gearboxes look a lot like spiral bevel type but their compel axes do not touch. They work fine with right angle compel shaft, they produce minimum sound, and they are powerful than spiral bevel gear systems. High-speed ratio can be handled with this system.