Triplex Steel
Moldboards are made of unequal layer, heat-treated Triplex steel that have an increased working life up to 40% over standard steel and a hard wearing surface over 1/8” thick.
Combining excellent productivity with easy hydraulic adjustment, the KUHN Vari-Challenger is the ultimate semi-mounted rollover plow. This high-performance machine offers up to 10 bottoms per side to cover large fields quickly with unmatched weed and residue burial. Infinitely adjustable plowing widths from 14” – 22” allow you to hydraulically adapt to changing field conditions from the comfort of the tractor cab. Hydraulic articulation keeps the forged shares and the Triplex steel moldboards firmly in the ground, even in undulating terrain. Thanks to the pivoting hitch headstock, turns up to 110° are possible to save valuable time at the headlands and on the road.
Your benefits
Heavy-Duty Components for an Increased Machine Life
Strong Backbone
Strength and durability starts with a strong backbone. In this case, the main beam measures a stout 8.7” by 8.7”. Many of the moving parts have been integrated into the machine’s structure to safeguard against impact, humidity and dust.
NSH System
Non-Stop Hydraulic (NSH) reset comes standard and protects the points, shares and other critical components from damage by rocks or foreign objects. The NSH system allows each individual bottom to move up to 27.5” vertically and nearly 8 inches laterally.
Well Formed Plowing with Moldboard Choices
H4 Moldboard
The H4, helicoidal, Scandinavian-type moldboard provides well-formed plowing to a normal depth range of 7-12”. The share is fitted with a reversible/replaceable point that greatly increases the life of the share. Recommended for fall plowing, the H4 moldboard is especially suited for heavy and damp clays. Furrow passes are well defined and trash burial is excellent.
N Moldboard
The helico-cylindrical N moldboard plows to a depth of 14”. Designed to be highly versatile, it is cylindrical at front, helicoidal at rear. A low draft ensures a partly broken furrow with excellent trash burial. Recommended for spring plowing, this moldboard is versatile and works well in sandy or clay soils.
Olympic® Share Points
Reversible for maximum efficiency. More pronounced shape at wearing zones on the point for longer life and better protection of the landside. Point is self-sharpening for good ground penetration of at all times.
Enhance Your Productivity in the Field
Hydraulically Adjustable Plowing Width
Users can easily adjust the plowing width from the tractor cab. The furrow can be narrowed to 14” for deep plowing and/or heavy soils. Increasing the furrow width to up to 22” improves productivity when working at shallower depths in lighter soil conditions.
On-Land Hitch
The Vari-Challenger includes an on-land hitch as standard equipment to accommodate large tractors with dual wheels. An available offset hitch kit offers even further clearance for extra-wide tires. Tracked tractors will especially benefit from the optional front mounted undercarriage, as it reduces the weight on the tractor for improved traction and handling. If the conditions require it, the plow can also be converted to an in-furrow machine.
Rear Body Lift
Hydraulic lift allows for progressive furrow entry by angling the main beam. This creates a smoother and more even headland and lowers fuel consumption. The rear section (behind the transport wheels) can be lifted out of the ground completely so only the front section is plowing, reducing power requirements in extremely difficult soil conditions.
Specifications
SPECIFICATIONS
| Number of bottoms per side (front + rear) |
|---|
| Extendable by one bottom |
| Standard moldboards |
| Hydraulic rollover with 2 cylinders |
| Minimum allowable power |
| Maximum tractor power |
| Approximate machine weight for NSH version |
| Working width |
| Underbeam clearance |
| Point to point clearance |
| On-land hitch kit |
| Tires |
| Two-wheel undercarriage with suspension for transport |
| Sequencing valve - combines lift and rollover functions |
| Hitch |
| Beam dimensions |
| Offset and angling adjustment |
| Adjustable depth wheel with tire |
| VARI-CHALLENGER 8 | VARI-CHALLENGER 9 | VARI-CHALLENGER 10 |
|---|---|---|
| 8 (5+3) | 9 (5+4) | 10 (6+4) |
| Yes, at rear | Yes, at front | No |
| H4 long helicodial | H4 long helicodial | H4 long helicodial |
| Standard | Standard | Standard |
| 200 hp (149 kW) | 225 hp (168 kW) | 250 hp (186 kW) |
| 360 hp (268 kW) | 405 hp (302 kW) | 450 hp (336 kW) |
| 14,092 lbs (6,392 kg) | 14,974 lbs (6,792 kg) | 15,856 lbs (7,192 kg) |
| 14'' - 22'' (35 - 56 cm) hydraulically adjustable | 14'' - 22'' (35 - 56 cm) hydraulically adjustable | 14'' - 22'' (35 - 56 cm) hydraulically adjustable |
| 31.5" (40 cm) | 31.5" (40 cm) | 31.5" (40 cm) |
| 40" (102 cm) | 40" (102 cm) | 40" (102 cm) |
| Standard | Standard | Standard |
| 400/70-24 | 400/70-24 | 400/70-24 |
| Standard | Standard | Standard |
| Standard | Standard | Standard |
| Cat. 3 with cross-shaft | Cat. 3 with cross-shaft | Cat. 3 with cross-shaft |
| 8.7" x 8.7" (220 x 220 mm) | 8.7" x 8.7" (220 x 220 mm) | 8.7" x 8.7" (220 x 220 mm) |
| Hydraulic | Hydraulic | Hydraulic |
| Standard | Standard | Standard |
