You have to take these factors into consideration when choosing gear modulus!

Gears have 5 basic parameters: number of teeth, modulus, pressure angle, addendum height coefficient and head clearance coefficient.Among them, the modulus determines the size of the gear and the carrying capacity of the product.Regarding the content of its calculation formula, if you are interested, please click on the article "Gear module calculation"View related instructions.

Determine the size of the modulus according to the use load; determine the number of teeth and the number of transmissions according to the speed of use.SatisfygearFor bending strength requirements, to meet the structural size requirements, choose a smaller modulus, and choose a standard value for the modulus.

The modulus generally only affects the force on the tooth root, not the force on the tooth surface.Within a certain range, the smaller the modulus, the higher the transmission accuracy, and the larger the modulus, the higher the gear strength.

The basis for selecting and determining the modulus is the result of the gear strength calculation.Gear design often only needs to consider the influence of modulus on tooth root strength. After the design is completed, check the tooth surface strength.

Gear modulus selection:

The national standard of gear module is GB1357-78.

1、优先选用模数：0.1mm、0.12mm、0.15mm、0.2mm、0.25mm、0.3mm、0.4mm、0.5mm、0.6mm、0.8mm、1mm、1.25mm、1.5mm、2mm、2.5mm、3mm、4mm、5mm6mm、8mm、10mm、12mm、14mm、16mm、20mm、25mm、32mm、40mm、50mm；

2、可选模数：1.75mm、2.25mm、2.75mm、3.5mm、4.5mm、5.5mm、7mm、9mm、14mm、18mm、22mm、28mm、36mm、45mm；

3、很少用模数：3.25mm、3.75mm、6.5mm、11mm、30mm。

The above is for reference only. Regarding the selection of gear modulus, you can directly ask EP technicians for more simple and clear answers.