FIELD: machine building.
SUBSTANCE: invention relates to machine building, particularly to gear drives. The gear drive contains at least two engaged cylindrical gearwheels (1, 2) with helical crown (3, 4) and teeth width (b). The first cylindrical gearwheel (1) has teeth profile (3a) at diameter of top circle (DK1), and second cylindrical gearwheel (2) has teeth profile (4a) with diameter of dedendum circle (DF2). At that the first cylindrical gearwheel (1) on each tooth has at least one shoulder (5) of tooth profile (3a) partially covering the tooth width and going beyond the diameter of the top circle (DK1). The shoulder has at least one thrust face (5a) to accept the axial forces.
EFFECT: increased reliability of gear drive.
9 cl, 2 dwg
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