The condition of the quality increase and reduction of the costs of renewable machines and devices exploitation in the aspect of environment protection is improvement of the phases of the renovation process. Regeneration of the used parts and renovation of the damaged machine sub-assemblies is an efficient form of recycling influencing the environment protection and strongly reducing material costs of the repaired machines and devices. Efficiency elements of the regeneration of machine parts and devices were analyzed in this study. Considerations presented here are showing the purposefulness of doing this.