FIELD: mechanical engineering. SUBSTANCE: chain transmission has two parallel chain strands. Sprockets of the strands has a hub and two similar toothings which are mutually shifted in tangential direction. At least one of the toothings of at least one of the sprockets is mounted to permit it to be fixed to the hub. The shift angle of the teeth of the toothings in tangential direction is defined by the relationship presented in the invention description. EFFECT: improved design. 3 dwg
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