A torque limiting coupling for a drive train in agricultural implements comprises a coupling hub (7) with first recesses (14) where coaches (17) move, and second recesses (15) where a spring arrangement (30) which biases via the cams (27) the associated driver (17). The coupling sleeve (32), arranged around the coupling hub (7), includes covers (37, 38) which close the unit and laterally guide the hub (7). Rings (47, 48) seal the unit tightly. An oil fill fills the space between the components. Thus, the coaches (17) which engage in the torque transmission position in a groove (34) can return there, after a case of overload, only if a reduced relative speed of rotation has occurred. The oil in the grooves (34) prevents the coaches (17) from re-entering for a high relative rotation speed. The coupling shows little wear.
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