GB Group English Machines Services Media - Marketing Contact Dealers COVER Deep Stubble Cultivators Configure your Cover The solution for scalping, dislodging dense root systems and creating a mulch with a large volume of plant waste. Watch the second video Walkaround Work effectively from 5 to 20 cm deep At last - a machine that offers real versatility without affecting your budget. Deep stubble ploughing (Germany) Destruction of cover crop (France) Grassland destruction (Netherlands) Ploughing back (China) Which one? V, X ou XL? Rugged terrain Well-liked for their simple adjustments, the ’V’ Covers are adapted for working on slopes in hilly terrain in upland regions. The mechanical or hydraulic adjustment of the drawbar angle allows the Cover to be pulled in a ’V’ in line with the tractor axis. The arrangement of the discs on the disc train gives the ’V’ Cover excellent penetration capacity. This makes it possible to work at higher speeds, with or without rollers. All terrain The ’X’ Cover works perfectly on all types of soil except steep slopes. The offset disc gangs ensure that it always stays in line with the tractor. Combinable with a seed drill, it reduces your hectare costs by limiting the number of passes. The X Cover is very versatile on farms. Wet conditions The ’XL’ isn’t necessarily larger than the ’X’. It combines the advantages of the ’’X’’ (apart from seed drill compatibility) and can be used at high speed. With the central axle located between the disc gangs, you can work with or without rollers (just like the Cover ’’V’’), and even work in very wet conditions. A range of semi-mounted off-set disc harrows from 24 to 122 discs for all types of operation ’V’ Cover ’X’ Cover ’XL’ Cover + Cover V T50 Tractors: Working width: Transport width: 85 → 125 hp 62,54 → 91,97 kW 2,60 → 3,90 m. 8,53 → 12,80 ft 2,55 → 2,55 m. 8,37 → 8,37 ft Semi-mounted V-form disc from 24 to 36 discs + Cover V T60 Tractors: Working width: Transport width: 125 → 210 hp 91,97 → 154,51 kW 3,50 → 5,25 m. 11,48 → 17,22 ft 3,00 → 3,00 m. 9,84 → 9,84 ft Semi-mounted V-form disc from 32 to 40 discs + Cover X T60 Tractors: Working width: Transport width: 125 → 210 hp 91,97 → 154,51 kW 3,20 → 5,00 m. 10,50 → 16,40 ft 2,55 → 2,55 m. 8,37 → 8,37 ft Semi-mounted X-form disc from 36 to 40 discs + Cover XL T60 Tractors: Working width: Transport width: 125 → 210 hp 91,97 → 154,51 kW 3,50 → 4,05 m. 11,48 → 13,29 ft 2,55 → 2,55 m. 8,37 → 8,37 ft Semi-mounted X-form disc from 36 to 40 discs + Cover V T70 Tractors: Working width: Transport width: 210 → 310 hp 154,51 → 228,08 kW 4,80 → 5,20 m. 15,75 → 17,06 ft 3,00 → 3,00 m. 9,84 → 9,84 ft Semi-mounted V-form disc from 44 to 48 discs + Cover X T70 Tractors: Working width: Transport width: 210 → 310 hp 154,51 → 228,08 kW 4,60 → 6,20 m. 15,09 → 20,34 ft 3,00 → 3,00 m. 9,84 → 9,84 ft Semi-mounted X-form disc from 44 to 64 discs + Cover XL T70 Tractors: Working width: Transport width: 210 → 310 hp 154,51 → 228,08 kW 4,40 → 7,00 m. 14,44 → 22,97 ft 3,00 → 3,00 m. 9,84 → 9,84 ft Semi-mounted X-form disc from 40 to 64 discs + Cover X T80 Tractors: Working width: Transport width: 310 → 400 hp 228,08 → 294,30 kW 5,00 → 7,00 m. 16,40 → 22,97 ft 3,00 → 3,00 m. 9,84 → 9,84 ft Semi-mounted X-form disc from 40 to 64 discs + Cover XL T80 Tractors: Working width: Transport width: 310 → 400 hp 228,08 → 294,30 kW 7,20 → 12,00 m. 23,62 → 39,37 ft 3,50 → 3,50 m. 11,48 → 11,48 ft Semi-mounted X-form disc from 66 to 106 discs + Cover XL T90 Tractors: Working width: Transport width: 400 → 600 hp 294,30 → 441,45 kW 12,00 → 14,00 m. 39,37 → 45,93 ft 4,50 → 4,50 m. 14,76 → 14,76 ft Semi-mounted X-form disc from 106 to 122 discs What about the discs? Notched Diameter: 660 mm Thickness: 6 mm Diameter: 660 mm Thickness: 7 mm Diameter: 660 mm Thickness: 8 mm Diameter: 710 mm Thickness: 7 mm Smooth Diameter: 660 mm Thickness: 6 mm Diameter: 660 mm Thickness: 7 mm Diameter: 660 mm Thickness: 8 mm Diameter: 710 mm Thickness: 7 mm Let’s talk about agronomy... Residue Decomposition Cover is the ideal choice for distributing plants and fertilisers evenly. It accelerates decomposition by mixing them with the surface layer which becomes more enriched. Self-seeding You can also use the Cover to create good conditions for weed emergence by promoting soil-seed contact. After the weeds have grown, passing again with the Cover will destroy and bury them to re-enrich the soil. Pest control The Cover contributes to pest control (such as slugs, insects, etc.) by eradicating adults on the surface and eggs in the surface layer. Your crop can then grow safely. Soil warming In order to germinate, soil must be at a specific temperature. The same is true for the humidity level. By mixing the surface layer, the Cover allows it to warm up in the sun. By germinating quickly, plants have a reduced risk of withering. Soil-seed contact To germinate, the seed must absorb a large quantity of water. To access water, there must be good contact between the seed and the soil. By breaking up clods, the Cover helps to improve soil-seed contact. The seedling must also have access to light in order to begin photosynthesis. By loosening the soil, the Cover helps to create openings for its development. Erosion control Successive disc and roller passes restructure the soil. This also prevents the formation of crusting and allows water to penetrate the soil. Mulch micro furrows limit erosion. The wind continually encounters these small obstacles and water evaporates less easily since the microfissures are never all exposed to full sunlight. Bearings that are ready for anything For over 20 years, Grégoire Besson has been known for the quality of its disc bearings. Its compact, cast steel housing does not obstruct the passage of residues. This reduces clogging. The braid and two outward facing seals form a triple barrier where excess grease can escape but dust and debris cannot enter. This intelligent system extends service life and reduces maintenance to a minimum. Shaft rotation is highly stable thanks to double conical bearings. They provide good shaft strength and extend bearing life. Bearing housings are recommended for very stony conditions. Square-shaped shafts with a diameter of 40 or 50 mm drive all the discs at the same time. By advancing all together, the discs become unstoppable, especially when they meet a foreign body. Consistency is their strength. The shafts, made of hardened steel, absorb shocks well and do not stretch when tightened. To make disc replacement more accessible, disc sets are tightened and locked at the ends. The welded design and the choice of steel make our disc train seats the best on the market. Rollers and harrows for all types of soils, conditions and finishes Square bar roller Aggressive on plant residues, it enables you to create a uniform mulch and accelerate stubble disintegration by maintaining a good level of moisture in the soil. It is light, economical and easy to grease. Tube roller Highly effective in sticky soils, it offers very good load-bearing capacity on all types of soils. It accelerates plant decay and creates a good mulch. Double square bar roller Twice as active, it destroys the most resistant plant residues and leaves behind an excellent finish. The unit is mounted on a pivot to conform to the shape of the land. Emopak flat roller A heavy roller, the flat profile Emopak enables surface compaction, ideal for self-seeding. It crushes clods and ensures fine seedbed preparation. Emopak V roller Roller with flanged, V-shaped and notched wheels. Its mass gives you a consolidation capability for excellent in-line finishes. It is well suited for self-seeding as it offers perfect soil-seed contact. It excels on dry, stony and cloddy soils. Harrow The 2 rows of 16 mm diameter wire tines have excellent separating power between soil and roots for drying plants, especially perennials. To avoid any damage during manoeuvering, tines are retractable for reversing. Trouble-free transport & storage On the road or in your warehouse, Covers are less than or equal to 3 m wide (except the XL Cover T90 which is 4.5 m.) DREAL road traffic approval. Dimensions during transport or worst case storage: V T50 Width : 2,55 m. (8,37 ft.) Height : 2,60 m. (8,53 ft.) V T60 Width : 3,00 m. (9,84 ft.) Height : 2,60 m. (8,53 ft.) X T60 Width : 2,55 m. (8,37 ft.) Height : 3,20 m. (10,50 ft.) XL T60 Width : 2,55 m. (8,37 ft.) Height : 2,95 m. (9,68 ft.) V T70 Width : 3,00 m. (9,84 ft.) Height : 3,60 m. (11,81 ft.) X T70 Width : 3,00 m. (9,84 ft.) Height : 4,05 m. (13,29 ft.) XL T70 Width : 3,00 m. (9,84 ft.) Height : 4,40 m. (14,43 ft.) X T80 Width : 3,00 m. (9,84 ft.) Height : 4,40 m. (14,43 ft.) XL T80 Width : 3,50 m. (11,48 ft.) Height : 3,50 m. (11,48 ft.) XL T90 Width : 4,50 m. (14,76 ft.) Height : 4,60 m. (15,09 ft.) Our customers tell us Philippe, France Cover X T70 « In our sandy soils, we need a weight-bearing roller. The 900 mm crumbler roller does not jam. We took the cover crop seeder option. The machine enables us to pass through our plots whatever the season or crop type. » Fabrice, France Cover X 70 « We need equipment that enables us to work the entire soil well, quickly and at low cost. We’ve had a Cover for four years and the discs have done 900 hectares. We expect to do another 900 on fairly rough terrain. » View video Vlad, Russia Cover XL T90 « Our farm is 7800 hectares. The Cover allows us to do stubble ploughing just before winter. We chose this machine to work without a roller. We saw it during the world record. » A look around your machines... Recap 1.Versatility 2.Low operating costs 3.Penetration performance 4.Robust design 5.Ample working depth 6.Mix organic matter at low speed 7.Rollers adapted to every need 8.Can be used on all types of crops 9.Easy transport 10.The culmination of 30 years experience Configure your Cover Configure your disc harrow, get an idea of price and then calculate your costs per hectare and depreciation. Tractor power Recommended tractor power (can be adapted according to your location) Tractors from 85 to 125 ch Tractors from 125 to 210 ch Tractors from 210 to 310 ch Tractors from 310 to 400 ch Tractors from 400 to 600 ch Next question Receive your finished configuration Email* Send Print Contact us Tractor power : Tractors from 85 to 125 ch V or X model ? : V model * Prices excluding taxes, delivery charges, entry into service and customs duties. Estimated price, non negotiated public price, ex works. Amounts, options, currencies and exchange rates may vary from country to country and at any time. ** Homologation-cancelling option in France Download our configuration Application Contact Select your country Afghanistan Åland Islands Albania Algeria American Samoa Andorra Angola Anguilla Antigua & Barbuda Argentina Armenia Aruba Australia Austria Azerbaijan Bahamas Bahrain Bangladesh Barbados Belarus Belgium Belize Benin Bermuda Bhutan Bolivia Bonaire, Sint Eustatius & Saba Bosnia & Herzegovina Botswana Bouvet Island Brazil British Indian Ocean Territory Brunei Darussalam Bulgaria Burkina Faso Burundi Cambodia Cameroon Canada Cape Verde Cayman Islands Central African Republic Chad Chile China Christmas Island Cocos Islands Colombia Comoros Congo Congo, Democratic Republic Cook Islands Costa Rica Côte d’Ivoire Croatia Cuba Curaçao Cyprus Czech Republic Denmark Djibouti Dominica Dominican Republic Ecuador Egypt El Salvador Equatorial Guinea Eritrea Estonia Ethiopia Falkland Islands Faroe Islands Fiji Finland France French Guiana French Polynesia Gabon Gambia Georgia Germany Ghana Gibraltar Greece Greenland Grenada Guadeloupe Guam Guatemala Guernsey Guinea Guinea-Bissau Guyana Haiti Honduras Hong Kong Hungary Iceland India Indonesia Iran Iraq Ireland Isle of Man Israel Italy Jamaica Japan Jersey Jordan Kazakhstan Kenya Kiribati Korea, North Korea, South Kuwait Kyrgyzstan Laos Latvia Lebanon Lesotho Liberia Libya Liechtenstein Lithuania Luxembourg Macao Macedonia Madagascar Malawi Malaysia Maldives Mali Malta Marshall Islands Martinique Mauritania Mauritius Mayotte Mexico Micronesia Moldova Monaco Mongolia Montenegro Montserrat Morocco Mozambique Myanmar Namibia Nauru Nepal Netherlands New Caledonia New Zealand Nicaragua Niger Nigeria Niue Norfolk Island Northern Mariana Islands Norway Oman Pakistan Palau Palestine Panama Papua New Guinea Paraguay Peru Philippines Pitcairn Poland Portugal Puerto Rico Qatar Réunion Romania Russia Rwanda Saint Barthélemy Saint Helena, Ascension & Tristan da Cunha Saint Kitts & Nevis Saint Lucia Saint Martin Saint Pierre & Miquelon Saint Vincent & the Grenadines Samoa San Marino Sao Tome & Principe Saudi Arabia Senegal Serbia Seychelles Sierra Leone Singapore Sint Maarten Slovakia Slovenia Solomon Islands Somalia South Africa South Georgia & the South Sandwich Islands South Sudan Spain Sri Lanka Sudan Suriname Svalbard & Jan Mayen Swaziland Sweden Switzerland Syrian Arab Republic Taiwan Tajikistan Tanzania Thailand Timor-Leste Togo Tokelau Tonga Trinidad & Tobago Tunisia Turkey Turkmenistan Turks & Caicos Islands Tuvalu Uganda Ukraine United Arab Emirates United Kingdom United States Uruguay Uzbekistan Vanuatu Venezuela Vietnam Virgin Islands, British Virgin Islands, U.S. Wallis and Futuna Western Sahara Yemen Zambia Zimbabwe +33 (0)2 41 64 72 67 GB Group France 2 rue Victor Grégoire 49230 Montigné-Montfaucon France Lat., Long.: 47.0843685, -1.1370094 Let’s talk... 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