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2020 / 2021 Edition

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Electrifying premiere for Keestrack H4e crusher

Keestrack team at Hillhead 2018

UK debut for highly compact and fully hybrid electric mobile cone crusher at Hillhead 2018

Keestrack, the Belgian-based mobile crushing and screening equipment specialists, presented their revolutionary H4e mobile cone crusher at Hillhead 2018. Making its UK debut, the highly compact plant with optional integrated pre-screen and three-deck hanging screen was displayed as a fully hybrid electric version, offering important energy savings in secondary or tertiary crushing.

‘We were really impressed by the large international attendance at this year’s show,’ said Michael Brookshaw, Keestrack’s global distributor manager. We met numerous expert visitors from all over Europe and our overseas market regions, including the Americas and Asia, all of whom acknowledged our global approach in supplying the highest standards in productive mobile crushing and screening.’

Today, Keestrack’s range for quarrying and recycling applications includes more than 20 different models, offering production rates from 200 tonnes/h up to 1,200 tonnes/h. Almost all models are available in diesel-electric or full-electric options.

On the stand at Hillhead, the fully hybrid H4e cone crusher highlighted Keestrack’s philosophy of delivering the most flexible mobility with consequent productivity. Still unique in the market with its optional three-deck hanging screen, the fully equipped plant weighs 46 tonnes (35 tonnes without options), offering easy one-piece road transport and fast relocation on site.

For flexible autonomous operation, the Keestrack H4e is equipped with an on-board diesel engine (345kW (EU-IV) / 328kW fixed speed (EU-IIIA)) that drives a 330kVa alternator, providing power to the 132kW electric motor of the crusher drive and to the separate 45kW E-motor/pump unit for all hydraulic drives on the plant (tracks, fans, screens, hydraulic cylinders etc).

Without starting the diesel, this setup allows the plant to operate fully ‘plugged in’ from the mains or from an external genset, resulting in energy cost savings of up to 70% compared with conventional diesel-hydraulic plants. As an option, the H4e diesel/alternator combination is available as detachable drop-off unit. Remotely positioned during operation, this reduces dust and vibration loads for the drive unit.

The Keestrack H4e features the KT-H4 cone crusher, adapted and supplied by one of the world’s leading cone specialists. The fully automated unit produces up to 250 tonnes/h at a maximum feed size of 185mm, whilst the wide variety of concaves allows for high flexibility in the secondary or tertiary production of highly defined end fractions.

To optimize production, the plant can be optionally equipped with a pre-screen with fines chute and with a highly efficient three-deck secondary screen module with recycling conveyor for closed-circuit processing. The large dimensions of the hanging screen (effective area: 3 x 5.4 sq m) and large stockpiling capacities of the conveyors prevent bottlenecks when producing up to four highly defined, high-quality end fractions.

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