... 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 ... .5-120.9–46219486.5A2F12W6.1–580 ZCM Two, Three, Four Grade Hydraulic Transmission(Gearbox)