Abstract: The technological parameters are one of the key factors that cause the teeth profile error. The paper analyses the causes that lead to the teeth profile error when grinding teeth using a machine equipped with the coned shape grinding wheel is used. The relation formula between the teeth profile error and the parameters of technology was obtained after experiments and the main factors that affect the error were found. It is very important for us to reduce the profile error and increase gear precision.

Key words: grinding forces, technology parameters, teeth profile error