Based on a concept of two driving mechanisms instead of four, the EH 50 hoists are compact enough to operate in areas where heavy loads must be lifted in confined spaces. Thanks to the use of compressed air as the driving medium, the robust hoists can also be used in hazardous areas where there is the potential for an explosion. If the area is particularly high risk, the units can be delivered with additional protection against metallic sparking.

At the American shipyard, the EH 50 hoist travels on a long 'I' section beam with 'A' supports.

Among the special features for this particular project was a 'rams' hook with shackle bore mounted at the end of the hoist.

Another specific customer requirement was to have the travelling motors of the EH 50 offer a free running mechanism when lifting the load, as many of the ship segments are not sufficiently balanced.

The solution engineered by J D Neuhaus allows the operator, using the control pendant, to open the brakes of the driving motors once the hoist is parked over the segment load. Once lifting commences, the EH 50 will move itself above the centre of gravity to allow a safe lifting operation.

MJ Information No: 20527