hydraulic transmission 40 years manufacturing experiences Export to more than 20 countries 1. Gearbox is made up of hydraulic motor, multi-disc friction braker and planet gearbox decelerator.2.Gearbox ZCM3.12-12500/B-F-K-Y three grade hydraulic transmission is specially developed for pump trucks,shipping, crane and transportation machinery, ports, mining and metallurgy and engineering machinery.3 ...