The current research on laser hardening of GCr15 bearing steel focuses on searching for optimal technological regimes. In this paper radiation power and processing speed are selected to be the main parameters of laser hardening. The second order central composite rotatable design was used in order to search for optimal values of laser hardening parameters and to obtain the best values of laser exposure zone depth and width, surface hardness and roughness without melting. Laser energy density was used to assess the presence or absence of melting on the surface of the part. The Design Expert 13 statistical software was used to obtain regression equations and contour curves of surfaces of equal response. Response surface methodology (RSM) was used. The response surface methodology allows determining the relationships between the input process factors and one or more measured responses. The interpretation of the results was carried out using a module of the analysis of variance (ANOVA). Optimal technological regimes GCr15 bearing steel laser hardening were proposed.