Both disc brakes and drum brakes are widely used on overhead and gantry cranes, and “better” depends on the duty profile and environment. Freins à disque generally offer superior heat dissipation and more consistent torque at higher speeds, which makes them attractive for high-duty hoisting, frequent stops, and applications where stable braking performance is critical. They can also be easier to inspect and maintain in some layouts.
Freins à tambour (including electro-hydraulic block brakes) are extremely common in crane travel and hoist systems because they are rugged, proven, cost-effective, and tolerant of harsh industrial conditions. They often integrate well with electro-hydraulic thrusters and standard crane architectures.
Le choix doit être guidé par le couple requis, l'énergie d'arrêt, le cycle de service (arrêts/heure), la vitesse de l'arbre, les contraintes d'espace, et l'exposition à la poussière, à l'humidité ou à la corrosion. Le meilleur frein de grue est celui qui est correctement dimensionné pour la fois au couple qu'à la charge thermique.