The properties of promising dielectric materials, in particular, elastomers used in precision movement mechanisms as a working body, are considered. The influence of the dielectric constant on the deformation of the material under the influence of an electric field is analyzed. It is experimentally established that with an increase in the filler concentration, the dielectric constant of the material increases. Keywords: dielectric elastomer, actuator, precision movement mechanism, dielectric constant, deformation, external electric field, barium titanate. ambazinenkov@bmstu.ru