A crop conditioning device (120, 820) for an agricultural harvesting machine, comprising: a frame (112, 122, 812, 822); a first conditioning roll (124, 824) connected to the frame; a second conditioning roll (126, 826) pivotally connected to the frame (112, 122, 812, 822) such that the second conditioning roll (126, 826) is movable relative to the first conditioning roll (124, 824), the second conditioning roll (126, 826) being located at a distance away from the first conditioning roll (124, 824) for defining a roll gap in between the first conditioning roll (124, 824) and the second conditioning roll (126, 826), the second conditioning roll (126, 826) comprising a pair of lateral ends; a tension member (141, 841) operably connected to the second conditioning roll (126, 826), the tension member (141, 841) being configured for applying a tension force on the second conditioning roll (126, 826); a tension actuator (144, 844) operably connected to the tension member (141, 841), the tension actuator (144, 844) being configured for adjusting the tension force applied by the tension member (141, 841); the crop conditioning device being characterized by the tension member (141, 841) being an elongated tension member being substantially parallel to the second conditioning roll (126, 826); a pair of control rods (151, 851) respectively connected to the pair of lateral ends of the second conditioning roll (126, 826); and a pair of roll-gap actuators (152, 852) respectively and operably connected to the pair of control rods (151, 851), the pair of roll-gap actuators (152, 852) being configured for pivoting the second conditioning roll (126, 826) to adjust the roll gap. a frame (112, 122, 812, 822); a first conditioning roll (124, 824) connected to the frame; a second conditioning roll (126, 826) pivotally connected to the frame (112, 122, 812, 822) such that the second conditioning roll (126, 826) is movable relative to the first conditioning roll (124, 824), the second conditioning roll (126, 826) being located at a distance away from the first conditioning roll (124, 824) for defining a roll gap in between the first conditioning roll (124, 824) and the second conditioning roll (126, 826), the second conditioning roll (126, 826) comprising a pair of lateral ends; a tension member (141, 841) operably connected to the second conditioning roll (126, 826), the tension member (141, 841) being configured for applying a tension force on the second conditioning roll (126, 826); a tension actuator (144, 844) operably connected to the tension member (141, 841), the tension actuator (144, 844) being configured for adjusting the tension force applied by the tension member (141, 841); the crop conditioning device being characterized by the tension member (141, 841) being an elongated tension member being substantially parallel to the second conditioning roll (126, 826); a pair of control rods (151, 851) respectively connected to the pair of lateral ends of the second conditioning roll (126, 826); and a pair of roll-gap actuators (152, 852) respectively and operably connected to the pair of control rods (151, 851), the pair of roll-gap actuators (152, 852) being configured for pivoting the second conditioning roll (126, 826) to adjust the roll gap.