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| DSD - Depth Synchronised Disc - Aggressiveness |
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The work is carried out by two rows of off-set scalloped discs mounted on a twin roler race bearing hub assembly. These discs are set at +18°/-18° to the direction of travel. This configuration aggressively cuts all the soil in one pass, mixing and chopping crop residues thoroughly. |
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The unique DSD technology is in the way that the aggressiveness of the discs change with the working depth. When the operator needs the machine to work deeper, the tractor hydraulics are used alter the working depth of the discs. This is beneficial in two ways, it tranfers more weight to the discs but more importantly changes the angle of the disc in its approach to the work producing a more agressive action which effectively pulls the disc into the soil. |
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| When turning on the headland the operator lifts the discs out of work and puts them back into work on the hydraulics . |
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The simple depth gauge on the 3,4,5m machines (left) can be clearly seen from the tractor seat and allows the operator to set the working depth of the machine |
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| hydraulically from the cab. On 6.3 and 8.0m machines the Electro Hydraulic Depth Stop (upper right) senses when the preset depth has been reached. A simple activation of the spool in the tractor seat takes the discs out of work and back to exactly the same depth. There is also an override switch incorporated into this depth stop so that the operator can switch the depth control off and put the discs in deeper where conditions require. Electro Hydraulic Depth Stop is an option on 3,4,5m machines. |
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| A major part of the two years development work on the new Disc Roller was the optimising of the disc design. This has resulted in the new Sabre disc from HE-VA. Normal heavily dished discs have too much angle and do not overlap enough to cut all the soil at shallow disc angle, with its superb cutting action, coupled with the stagger of the two disc rows provides the maximum movement and mixing of soil, even at shallow working depths. The Sabre means you have cost effective cultivations at speeds up to 16 Kilometers per hour. |
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| There is much emphasis placed on health and safety as there is on cost effective solutions in HE-VA research and development. All aspects of operator safety and control and any potential dangers are studied carefully and solutions produced to ensure all owners/operators have peace of mind. |
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Transport width 2.45m |
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Transport Cradle |
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Transport Locks |
Another unique element of the HE-VA Disc Roller is that all machines fold to below 2.45m which is significantly less that the legal transport width. This provides maximum manoeuvrability and the operator having that little extra confidence in tight situations around trees or barns. |
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The three section machines have transport cradles for the wing sections. The last part of the folding sequence is to lower the wing sections. The last part of the folding sequence is to lower the wing sections into the cradles which secure them for tranport. |
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The two section machines are equipped with central transport locks which are hinged on the main beam producing a positive control of both sections in transport. |
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