Lifting heavy objects at difficult accessible locations

Mammoet lifting

Lifting transformers up to 500 mm at difficult accessible locations. Commissioned by Mammoet, Holmatro supplied 85 ton aluminum cylinders and stacking rings.

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Commissioned by: Mammoet
Location: worldwide


Mammoet is specialized in heavy lifting and multi-modal transport. Their specialty is transporting, shipping, installing (horizontal and vertical) and decommissioning large and/or heavy structures to and from any location, on both land and water.


A crane cannot always be used for lifting transformers for Mammoet. In case of poorly accessible locations and at locations where the transformer is placed on a gravel bed, the company had needed a lightweight and user-friendly solution.


Holmatro developed 85 tonnes aluminum cylinders (HAC 85 H 10.65) and stacking rings to lift and lock heavy structures like transformers up to a height of 500 mm without the help of filler blocks. Aluminum cylinders with a capacity of 75 tonnes and a stroke length of 130 mm were also supplied. These cylinders were integrated into the aluminum climb cassettes, developed by Mammoet.

Jaap Jan den Boer, project supervisor Mammoet, explains: “We regularly carry out projects for an energy producer where we have to replace 3 transformers. This means we have to move 6 transformers in a few days, according to a schedule agreed in advance with the customer”. He concluded, “Holmatro's lightweight aluminum cylinders significantly reduce physical labor, making work much more enjoyable, resulting in a positive effect on health, ergonomics and safety. But it also saves a lot of time. Holmatro's aluminum cylinders are also regularly used in other projects where there is no time pressure”.

Did you know aluminum cylinders are up to 50% lighter than steel cylinders? They are therefore easier to work with and better for your employees health & safety.

Read more about Holmatro’s aluminum cylinders