How to calculate the gear module?

Gears are an irreplaceable element of many machines. The steel from which the gears are produced must be characterized by high resistance to mechanical damage, abrasion and corrosion. However, it is worth knowing that different gear parameters are used in different machines, so it is necessary to choose the right features. Read our article in which we share methods for the correct calculation of the sprocket module.

What do we call a gear module?

The basic parameters of the gear are the width of the tooth, outer diameter and its module. To match two sprockets that will work together, it is necessary to know it. Thus, the size and other characteristics of the sprockets may differ from each other, while the value of the module must be identical to properly work in one transmission. If, on the other hand, the sprockets are characterized by different modules, their work will not be done correctly, it is also very likely that individual teeth will rub off due to uneven meshing. In such a situation, it may sometimes be necessary to grind steel. However, it is best that the modules are matched so as not to affect the operation of the entire transmission badly.

How to calculate the gear module?

Contrary to appearances, calculating the gear module is not a difficult mathematical problem, but only requires the use of a formula that will allow you to calculate the correct result. The formula for the sprocket module is: m = ⌀/(T+2). Deciphering individual markings, you should know that "m" is a gear module, "T" is the number of its teeth, while "⌀" is the diameter of the entire circle. To calculate the module we need, we should substitute specific, already known numbers to the formula. The result we will receive should be between 0.3 and 30.

koło zębate