Study of the dynamics of the coefficient of external friction of seeds crops with shell

The article is devoted to the study of coefficients external friction grain agricultural products-friction in static and dynamic modes, as most important physical mechanical characteristics bulk materials. description carousel laboratory unit, program, methodology results studies on practical determination for typical products according materials working bodies production machines. As a result research, it was found that range linear velocities from 0 1.75 m/s, there change coefficients, which has nonlinear character.