FIELD: machine building.
SUBSTANCE: invention relates to bush chain tensioners. Chain drive chain tensioner comprises slider (4) with stop (7) arranged in hole (2) of housing (1) and spring-loaded relative to the latter. One of the end surfaces of slider (4) is designed to transmit the action of spring (5) interacting with stop (7) of slider (4) for tensioning the chain. In hole (2) of housing (1) there is radially oriented ledge (6). Slider (4) has recess (9) with axial length exceeding that of ledge (6). Slider (4) is located in hole (2) of housing (1) with radial gap, which provides possibility of entering of radial ledge (6) into recess (9) of slider (4) at forced displacement of the latter relative to longitudinal geometrical axis of hole, in which it is arranged.
EFFECT: simplified preparation of the tensioner, in which the disclosed device is used, for installation into the chain transmission and simplification of the tensioner recharging, convenience and compactness of transportation of the assembled tensioners, as well as reduced material consumption of the device.
6 cl, 3 dwg
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