The SOS Snag Overload System is the first non-hydraulic snag protection for container cranes. It eliminates the danger of structural damage starting at the motor, which is beside the brake disc the major source of snag inertia load.

At any kind of overload the inertia and the driving force of the (AC!) motor is separated from the hoist by the MSC within one millisecond. To reduce the remaining inertia coming from the brake disc, LiTec® brake discs offering 60% less inertia than steel discs are in use.

The special designed service and emergency brakes (fast setting execution) avoid at the same time a reverse of the rope drum.

The reaction time of the system in combi na tion with its own and separate PLC is ultra fast and completed, be fore conventional hydraulic systems are able to react.

Beside the advantage of having even less maxi mum rope forces compared to a conventional snag system, the system is much less in weight, low maintenance and cost effective.

For the full product specifications, please download the product brochure from this page.