High-speed assembly lines in motor vehicle manufacturing subject drive couplings to constant torque pulses and angular misalignment. Between the electric motor and the gearbox of a robotic arm or conveyor indexing unit, this flexible toothed coupling absorbs the shock of rapid starts and stops while compensating for slight shaft misalignments that occur as the line ramps up to full cycle speed. The elastomeric teeth deform just enough to dampen vibrations before they reach the gear teeth, preventing premature wear on bearings and seals in the adjacent machinery. On a door-hinge assembly station, the coupling ensures the servo motor’s precise angular positioning is transmitted smoothly to the fixture, even when the motor frame shifts slightly under dynamic loads. In powertrain test cells, the same coupling connects the dynamometer to the engine output shaft, allowing the test rig to simulate real-world misalignment without introducing measurement noise.