Keestrack’s hybrid mobile cone crusher H4e electrifies Hillhead

2992 Keestrack says that the highly compact plant with optional integrated pre-screen and three-deck hanging screen offers energy savings in productive secondary or tertiary crushing. Keestrack’s range for quarrying and recycling applications includes more than 20 models, offering production rates from 200-1,200tonnes/hour. Almost all models are available in diesel-electric or full-electric options.

The H4e, says the company, is still the only model on the market that can offer a three-deck hanging screen. The fully equipped plant weighs only 46tonnes, versus 35tonnes for a unit without options.

It also allows easy one-piece road transport and fast relocation on site. It is equipped with an onboard 345kW diesel engine fixed speed (EU-IIIA). It 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.

Without starting the diesel, this setup enables the plant to operate fully “plug-in” from mains or external gen set, resulting in energy cost savings up to 70% compared to conventional diesel-hydraulic plants, said Michael Brookshaw, Keestrack’s global distributor manager.

The H4e diesel-alternator combination is also available as detachable drop-off unit. Remotely positioned during operation this reduces dust and vibration loads for the drive unit.