{"id":30301,"date":"2026-03-18T16:03:04","date_gmt":"2026-03-18T14:03:04","guid":{"rendered":"https:\/\/allu.net\/case\/efficient-screening-in-mountain-conditions\/"},"modified":"2026-04-08T13:09:21","modified_gmt":"2026-04-08T10:09:21","slug":"efficient-screening-in-mountain-conditions","status":"publish","type":"allu_application","link":"https:\/\/allu.net\/us\/case\/efficient-screening-in-mountain-conditions\/","title":{"rendered":"Efficient Screening in Mountain Conditions"},"content":{"rendered":"
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HOW BEAUTIFUL THE MOUNTAIN IS<\/strong><\/p>\n\n\n\n

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There is no need to extract from nature what can simply be produced on site with a screening bucket, namely fine trench backfill material. For a mountain contractor from Haute-Maurienne like Yoan Bernard, screening excavated material directly on site is more than obvious, it is a necessity. After a first successful experience with a screening bucket mounted on his 10-ton spider excavator, he moved to a more compact model: an ALLU DC 2-08 Bucket<\/strong> weighing 275 kg for his 5-ton Kubota.<\/p>\n\n\n\n

For the commissioning, Yoan is operating the machine while Pierre Ratigner, workshop manager at Cimax, adjusts the hydraulic flow. While the manufacturer recommends a range of 20 to 40 l\/min, for this 5.5-ton KX057-4 excavator the flow is set to 38 l\/min. The maximum operating pressure is 200 bar and does not require any particular adjustment.<\/p>\n\n\n\n

For the operation of its bucket, as with its heavier models DL-series for excavators up to 12t, D-series for excavators up to 45t, ALLU has chosen a drive system where the first rotor is powered by a hydraulic motor, with transmission to the opposite side via a gear and a well-dimensioned metal chain.<\/strong><\/p>\n\n\n\n

On the DC-series for compact excavators from 2 to 10 t, the same drive design is used with the integrated Transformer technology. This allows efficient screening regardless of the type of material: from hard and compact to soft and malleable, from dry to more or less wet and sticky.<\/strong><\/p>\n\n\n\n

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\"ALLU<\/figure>\n<\/div>\n\n\n\n
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\"Pierre,<\/figure>\n<\/div>\n<\/div>\n\n\n\n
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THE SCREENING EXPERIENCE<\/strong><\/h4>\n\n\n\n
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The main difference with the ALLU bucket lies in its fixed screening grid positioned above the rotors. <\/strong>This ensures that the loaded material always remains in contact with the grid. The blades pass through the grid and clean themselves automatically, which helps maintain:<\/p>\n\n\n\n

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