Improved Side-rolling Hatch Covers
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Improved Side-rolling Hatch Covers


Improved Side-rolling Hatch Covers

MacGREGOR’s new Roll-up-Roll mechanism for side-rolling hatch covers combine higher operating efficiency and safety with lower maintenance. According to the company, just 18 hydraulic cylinders are needed for a shipset of Cape-size bulker covers, compared with 72 cylinders used in traditional wheel-lifting systems. Panels lifting and cleating is performed simultaneously and fully automatically, simplifying and speeding deployment of the covers.

Each panel is operated by a hydraulic motor and rack-and-pinion system applying a new patented type of hydraulically actuated self-locking Roll-up-Roll mechanism which is automatically secured when the covers are closed. The foundation point on deck can be adjusted thus ensuring the correct rubber compression. This helps during the installation stage and also during service, as it is possible later to compensate for wear and still maintain the correct level of compression.


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