In the paper, design of a centrifugal accelerator and its stress-strain analysis carried out with the SolidWorks software are presented. A finite element model of an accelerator part placed on a shaft with conical surface is elaborated. The model uses high-quality grid of parabolic tetrahedral elements. The nonlinear contact problem is solved by iterative algorithm. Stress-strain analysis shows the maximum stress at the point where accelerator contacts with the shaft. Amount of the stress can be reduced by increasing the contact area and making the conical surface smooth. Elasticity modulus and conventional yield limit for high-strength aluminum alloy V96Ts1 T1 are estimated experimentally. Strength calculation for centrifugal accelerator of powder particles is performed with consideration of stress at the point where the accelerator contacts with the shaft. Also, radial speed of particles emerging from the accelerator is evaluated. Advantages of cold spraying of powders over other techniques of hot-spray coating are demonstrated.