Gearbox shell

Short description of the gearbox shell

The gearbox shell is made of cast iron and is used to protect the gearbox components

Additional description of gearbox shell

The engine must have a means of stopping until the vehicle stops. The device that does this is called the transmission gearbox

The gearbox shell is made of gray cast iron and includes a set of gearbox gears. In the gearbox shell, the parts inside this part are mounted on the shell. This part is connected to the car engine

The gearbox shell acts as a foundation that holds other components such as shafts and bearings, withstands the force generated by them, and protects the internal components. And because it is affected by stress and force and thermal strains, the thickness of the shell and its tolerances must be examined. The shell material is usually cast iron because it is cheaper than other materials such as steel and has vibration damping properties. In some cases, when the stresses on the shell are high, the shell material is made of cast steel. In special applications such as automotive, which require light weight, the shell material is made of lighter alloys. It is usually tried to make the shell into two pieces at most, except when the size is so large that casting a piece is problematic. Therefore, in these cases, several pieces are welded together. The disadvantage of this design is that the two-piece gearbox can not dampen the noise well. However, after welding, it is subjected to heat treatment to reduce the thermal stresses caused by welding. In gearboxes, the surfaces that are placed on top of each other must be machined with great care, and a suitable washer is placed between these two pieces to prevent oil leakage. The screws must be tightened in such a way that they do not warp the shell. The axis of the shafts is located on a plate where two shells are placed on top of each other. If the gearbox operates in conditions that are affected by external factors such as acidic environment or salt fog or conditions where the gearbox is exposed to corrosion, it is necessary to plaster or paint the surface of the gearbox shell. The shape of the shell where the shaft bears the force has an appendage to strengthen the shell to withstand stresses

The shape of the shell is selected according to the space it occupies and with considerations such as ease of assembly and repair and according to the manufacturer’s work experience in making the gearbox, so that even with proper deformation of the shell, its weight can be drastically reduced and less space occupied

The shape of the shell must be in the place where the bearings are located

In order for the bearings to be able to withstand, this will keep the bearings well in the shell, and this will be easier if we want to change the bearings due to repairs. Two-piece shells have appendages such as guides, which make the two parts of the shell better paired, and then the two pieces of shell are fastened together with screws. In fact, this shape of the gearbox shell is the simplest design in terms of geometric shape. And at the same time, it has all the features that a gearbox shell should have. If the designer wishes, he can use various shapes for the gearbox shell. These shapes can be varied depending on the designer’s creativity and issues related to the design of gearbox shell components and the study of stresses in the shell and issues related to space occupation and shell weight and ease of repair and assembly. Economic considerations The following gearbox shell is almost a complex shape of shell one. Is a gearbox. It can be clearly seen that one of the reasons for choosing this form of shell is to take up less space in the environment and reduce the weight of the shell. It is two-piece due to easier repairs and easier assembly. Took. In general, the gearbox shell is like human skin, which in addition to protecting its internal contents, which includes the gearbox system, also retains oil

Product customers

The following factories and companies are the customers of this product: