Both disc brakes and drum brakes are widely used on overhead and gantry cranes, and “better” depends on the duty profile and environment. Frenos de disco 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.
Frenos de tambor (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.
La selección debe estar impulsada por el par requerido, la energía de frenado, el ciclo de trabajo (paradas/hora), la velocidad del eje, las restricciones de espacio y la exposición a polvo, humedad o corrosión. El mejor freno de grúa es aquel que está correctamente dimensionado tanto para el par como para la carga térmica.