Manuli develops giant excavator hump hose


Manuli Hydraulics is taking on the challenges of open-pit mining with the launch of a hump hose designed for giant excavators.

The Hercules/HT system comprises of the newly developed Hercules/HT 6WS hose, a selection of highly robust interlock superfittings, the Goldencrimp/420 crimping machine and a HSSL heat-shrinkable sleeve.

Manuli Hydraulics head of marketing, Peter Brooks, said, “The new Hercules system was developed to take on the challenges of open pit mining – huge loads, high temperatures and tough materials – that place such enormous demands on the hydraulic systems of the giant machines that work within these environments.

“To keep the cost per tonne to a minimum these machines must be capable of running almost constantly with minimum downtime for maintenance and maximum intervals between servicing.

“The greatest stress placed on these hydraulic systems is within the hose assemblies, often referred to as ‘hump hoses’, that supply power from the main control valve to the boom.

“The high pressures, constant stress and high fluid temperatures can cause rapid aging in all but the most resilient of hose assemblies. Developed specifically to cope with these challenges our new Hercules/HT System offers a fully integrated solution to maximise service hours and minimise downtime.”

Designed to work flawlessly together, this system enables the easy field-replacement of the critical “hump hoses” found on giant excavators, and provides a performance equal to, and often exceeding, the original factory fitted hoses.

The system is designed for working pressures up to 420 bar, and is available in the most commonly used sizes of DN 31, DN 38 and DN 51.


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James joined the Industrial Vehicle Technology International team in 2017. Previously he was Assistant Editor on an engineering title for several years and has worked for various other trade magazines before that. James is happily married and has a young daughter and son who keep him busy.

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