Crane concept
Ship unloaders are built for fast, repeatable cycles. The crane grabs, hoists, travels horizontally, and discharges into the hopper in one smooth sequence, keeping the route from ship to bunker short and direct. With the right grab geometry and capacity, this setup delivers consistent fill, clean release, and steady flow to the conveyor for higher cycles per hour and quicker vessel turnaround.
Operational challenges
Energy consumption and demurrage are major cost drivers in bulk operations. Heavy or inefficient grabs slow the cycle, raise hoisting energy, and keep vessels alongside longer, which adds cost. Lifting more useful tonnes per cycle, shortening the timeline at berth, and controlling wear are essential to maintain predictable performance and lower operating costs.
Choosing the right grab
NemaX is engineered to maximize payload with low self-weight, enabling fast closing, reliable penetration, and clean discharge. By reducing dead weight and improving fill factors, NemaX can cut energy use by up to 7 percent and help move more tonnes per hour with fewer interruptions. For stable, high-volume duties where material conditions are consistent, a heavy-duty clamshell offers durable closure, straightforward maintenance, and high availability.
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100 Years of Passion for Performance at Nemag
How switching to an electric arc furnace affects your grab productivity
