The majority planetary precessional transmissions diagrams developed previously operate efficiently in reducer's regime. Teeth profiles have an important role in the efficient transformation of motion in the precessional transmissions that operate as multipliers. Multiple precessional gear theory, previously developed, did not take into consideration the influence of the diagram error of the linking mechanism in the processing device for gear wheel on the teeth profile. Functioning under the

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... tiplication regime, the errors of the linking mechanism have major influence, which can lead to instant blocking of gear and to power losses. With this purpose, a thorough analysis was conducted on the motion development mechanism under multiplication, and on the teeth profile error generating source. This paper describes also the precessional transmission diagrams operate efficiently in multiplier's regime, and cinetostatic analysis of precessional multipliers. © ¹ § · © ¹ § · © ¹