10/20/18. Irontrax was recently engaged by a major financial institution to appraise a group of RTGs and RMGs operating in North America’s busiest container port, the Port of Los Angeles. Don’t trust an inexperienced appraisal firm to value these million dollar assets! Contact an Irontrax Expert for your RTG & RMG Crane appraisal needs.
Rubber Tired Gantry Cranes and Rail Mounted Gantry Cranes are the workhorse of intermodal operations all over the world. Their main function is to load containers from trucks or terminal tractors to the container block and vice versa. To reduce loading and unloading times of large container vessels, the storage container yard needs to be managed in the best possible and most efficient way. Depending on the degree of automation in modern container terminals, this can be managed by two types of container management cranes: Rubber Tired Gantry Cranes (RTG) or Rail Mounted Gantry Cranes (RMG).
Although the task for both types of cranes is very similar – to manage input and output of containers into a container block or stack – the functionality and technical requirements for these types of machines are significantly different. RTG cranes are operated by onboard drivers. Typically RTG’s span 5-8 containers in width and 3-5 in height. Standard RTG cranes are equipped with diesel engines to provide power for travel and lifting.
RMG cranes are fully electrified cranes. Main power supply and data transmission are managed by a dedicated and highly dynamic motor driven cable reels. RMG cranes are typically wider and higher than RTG cranes. Due to automated functionalities and additional onboard monitoring equipment, the requirement for data communication on a RMG crane is much higher.