Vari-Manager 7E NSH Kuhn Vari-Manager 7E NSH Specifications & Technical Data (2007—2023)

Traction bolt leg protection

Abrupt breakage of the 16 mm traction bolt following a force at the plough point in excess of 3000 kg (4000 kg on Challenger) avoids risk of too frequent a breakage. The bolt runs in the direction of the line of force contrary to the conventional scissor bolt method where the bolt runs across the line of force. Due to these “in-line” forces the bolt support never deforms and never becomes rounded with use. It is impossible for the bolt to become trapped inside following a breakage. Once a force in excess of 3000 kg is met at the furrow point the bolt breaks along its length and simply falls away for quick and easy replacement. Even after many bolt breakages the plough bodies remain at an identical depth and perfectly in-line.

L wide helical h4 body (also available in plastic)

The capacity, long helical mouldboard, Scandinavian type, giving well formed ploughing to a depth of 30cm. Especially suited to heavy and damp clays. (H6 gives ploughing depth to 35cm).

Vp slatted body

Mouldboard composed of independent and interchangeable slats. Gives a reduction of traction force, due to a lower mouldboard surface area. Easy maintenance.

Independent, easy to adjust skimmers

Each skimmer is totally independent left from right and is firmly held in a sheath like support. The skimmers are shear bolt protected and are adjustable in three directions: Forwards and backwards - with a choice of three positions the sheath bolts to the leg support via countersunk holes to avoid any risk of free play. Up and down - rapid and precise height adjustment (20cm of adjustment) also with countersunk holes in the skimmer leg for easy locking of the leg at the desired height. Side to side - for correct adjustment in relation to the disc coulter (where fitted).

Disc coulters

Discs have a diameter of 500mm plain or notched with the added choice on the traction bolt models of a 600mm disc. The disc serves to cut the furrow wall in front of the plough body, giving a cleaner finish and improving trash incorporation.

Press arms with hydraulic release

Available for the complete plough range, the arm allows the use of a furrow press with easy hooking up and hydraulic push-off. On the pick-up hook part of the arm, where there is most risk of damage, all grease nipples and hydraulic hoses are protected inside the structure of the head. The arm folds up conveniently for subsequent transport.

Large hydraulic offsetting adjustment

Large adjustments can be made to the plough offsetting (its angle in relation to the tractor) from the tractor seat by simple action on one of the spool levers. This allows for easy adaptation to all possible tractor inter-wheel distances and also permits a complete cancellation of the effect of the first body for particular circumstances e.g. finishing a field, going round obstacles etc.

The two wheel undercarriage

Assured stability during manoeuvres: The undercarriage allows a substantial reduction in the strains put upon the tractor arms during turnover. This engineering concept allows a lowering of the centre of gravity. Turnover is carried out by two direct acting horizontal rams with no complex mechanical linkages. This very simple turnover system has a minimum of moving parts reducing both the risks of wear and of any possible maintenance requirements. The system comes complete with a hydraulic levelling lock (patented).Excellent stability in work: The two wheel undercarriage ensures good overall plough stability. One wheel running in the furrow also gives excellent sideways stability especially when working on slopes.

N body

Helicoidal cylindrical semi-digger. 15 to 30cm ploughing depth. Highly versatile body. Cylindrical at front, helicoidal at rear. Low draft, ensures a partly broken furrow, with excellent trash burial.

Advantages of the variable width system

To adapt quickly to available traction. To adapt to different soil types, ground relief and field size whilst maintaining a high work rate. To alternate the plough profile summer and winter. To cope with large amounts of trash. To neatly finish up to the field border. To avoid obstacles and tidy the furrow.

The heart of the semi-mounted range

With a wide choice of bodies and safety systems, the Manager semi-mounted plough range is suited for most medium range horsepower tractors and working conditions. Its easy manoeuvrability enables even the most difficult fields to be ploughed without reducing working rates. Furthermore, with this semi-mounted plough, you can use the same power tractor with more bodies than if you were using a mounted plough.

Sharp turning angle of 110° for excellent manoeuvrability

The undercarriage wheels can be directed left or right according to the direction required by slightly turning the plough to one side or the other with the turnover mechanism. The centre mounted wheels are closer to the tractor compared to a rear mounted single wheel system, allowing a more in-line finish to the ploughing, a better turning angle, and subsequent shorter headlands. The specially designed headstock articulation joint gives an impressive 110° turning angle.

Beam articulation (patented)

The beam articulation allows the plough to follow undulating terrain, giving a constant ploughing depth along the length of the plough. When coming out of work, whilst the front bodies are lifted out of the ground, the rear bodies remain at a constant working depth, giving reduced headlands and a neater finish to the end of the bout. The articulation locks automatically when coming out of work and remains locked during all transport manoeuvres. It is unlocked as soon as the plough is put back into work.

A semi-mounted plough with hydraulic variable width for maximum versatility

The Vari-Manager meets the demands of today’s professionals. Robust and durable. Total protection of the plough structure with the non-stop hydraulic auto-reset system, shear bolt protected skimmers, and transport suspension. A high level of versatility for increased work rates, easy adjustments, and a hydraulic variable width system for quick and easy adaptation to all working conditions. A variable width mechanism is fully integrated into the plough beam for maximum protection and long life.

All moving parts fully integrated into the plough beam

The whole linkage mechanism responsible for the variable width changes is housed inside the plough beam. All links and moving joints are fully protected from abrasive agents (dust, corrosion) as well as from any possible impact damage. This exclusive feature ensures a long trouble-free working life. All variable width linkages and articulation points are heavy duty for an exceptionally strong overall construction. All moving joints are fitted with heavy duty bushes.

Kuhn’s solution for high horsepower tractor

The Challenger range is without doubt the plough for high horsepower tractors and extremely difficult working conditions. Its number of bodies ensures that the highest work rates are achieved. The Challenger’s 220 mm section beam ensures robustness during work, and combined with its safety system (traction bolt or Non Stop Security), it offers a long life. The beam’s articulation and the plough’s transport suspension give you a more sensitive reaction to ground and road conditions during use.

Multiple working widths 14”, 16” and 18”

Whether a traction bolt model or non-stop hydraulic (NSH), changes in working width to settings of either 14”, 16” or 18” are quick and easy to carry out. The width fixing bolt is removed and the plough leg pivoted to the desired width setting. The rear beam angle is changed in the same manner, and shims at the articulation joint are moved to positions corresponding to the required width setting.

Hydraulic beam articulation (patented)

Fitted as standard, the hydraulic articulation allows an adjustment (from the tractor cab) of the amount of articulation travel according to soil conditions. A hydraulic accumulator integrated into the hydraulic circuit has the advantage of giving a more sensitive reaction to small ground level changes.

Transport suspension

Fitted as standard on the Challenger and optional on the Manager, transport safety is maximised with three weight bearing points (two carriage wheels and tractor arms), giving an improved overall balance to the plough in the transport position. There are no protruding depth wheels when on the road. Suspension in the transport position is provided by means of an undercarriage mounted shock absorber, protecting the entire length of the plough from possible transport shocks.

Rear depth control wheel

Fitted with a 600 mm (MANAGER range) or 690 mm (CHALLENGER range) tyre, the rear beam mounted depth wheel pivots freely from side to side to follow all changes in working width. The wheel is simply designed and easy to adjust: depth adjustments are made by turning the handle screw, with the possibility to set the depth independently left from right.

Ploughing on-land

Benefits greater distribution of weight load reducing compaction to a minimum no tractor wheel slip in the furrow reduced tyre wear on stony ground extra wide tyres or dual wheels can be used time savings - not necessary to disassemble dual wheels for ploughing. The Challenger in its “on-land” version can be easily transformed back to an “in the furrow” plough when wet conditions reduce traction on land. A front mounted depth wheel is essential when working in the on-land position.

Depth wheel with shock absorber

Available for the CHALLENGER series in 690 mm diameter with rubber tyre. The shock absorber not only removes the shock of the wheel falling during turnover but also ensures the wheel is in the correct rearwards inclined position as the plough is lowered back into work.