Rockster DUPLEX crusher conquers Morocco

Earthworks specialists CSB Mobile benefit from the flexibility of R1100D crusher with screenbox

SINCE February 2020, a Rockster R1100D impactor with screenbox and return belt has been creating valuable aggregate for Moroccan earthworks specialists CSB Mobile, who have cited the easy handling and good performance of the crusher, as well as its ability to process various materials, as key criteria for their purchase.

Based in Casablanca, CSB Mobile have 10 employees and a machine fleet comprising three bulldozers, three excavators and one flatbed truck, and cover contracts ranging from road-bed preparation to stone quarrying.

With the company looking to put more emphasis on demolition and recycling work as well as quarrying, one of its key requirements was a high-performance crusher with large inlet opening.

As one of CSB Mobile’s senior executives is from Ukraine, he got in touch with Rockster’s Russian dealer, Maksim Perminov, who suggested the Rockster R1100D.

‘I recommended a track-mounted Rockster R1100D impact crusher because the handling of this hydrostatically driven machine is quite simple and the output is remarkable,’ said Mr Perminov.

The main benefit of hydrostatic drive is the constant crushing performance due to the continuous adjustment of the hydrostatic pressure to the power requirements of the crusher. This leads to noticeably reduced diesel consumption per tonne of production. A further benefit of hydrostatic drive is a reduction in wear costs compared with a conventional clutch system.

Another reason why CSB Mobile chose a crusher from Rockster was their patented DUPLEX system, which means the R1100D can be quickly modified from an impact crusher to a jaw crusher and vice versa. This allows the customer to achieve maximum machine utilization and to rapidly adapt to different job requirements.

One of the first tasks for the R1100D impact crusher was the processing of 10,000 cubic metres of abrasive gravel. Whereas the final 0-40mm fraction would usually contain 10–15% soil, thanks to the Rockster’s prescreen in combination with its side discharge belt, CSB achieve a very high-quality end product that sells for around US$7–9 per cubic metre.

The crushing of heavily compressed sand in a sand quarry was another very different task for the Rockster impactor. The sand is excavated with a vibro-ripper from an extremely strong quarry wall. ‘The ripper produces solid lumps of sand which are fed into the crusher with its 5mm screen and we get great sand,’ said CSB owner Lurii Lisnichenko.

The screening system mounted on the crusher produces a precisely defined final grain size in one pass. This end product is in high demand in Morocco and is sold directly from the quarry for US$10–11 per cubic metre.

The mobility of the machine was another a very important factor for CSB Mobile, who can put the crusher on their own flatbed truck and transport it anywhere, depending on the job, a flexibility that allows the company take on jobs that were previously not possible.