SB 1290 iD baler silhouette

Efficiency and profitability for your baling operation

The SB 1290 iD is designed to produce bales with an extremely high density in all crop conditions. Thanks to the patented TWINPACT plunger technique, the baler has a lower power requirement and lends to more profitable baling operation.

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With the development of the SB 1290 iD, KUHN offers you an intelligent and innovative answer to today�s and tomorrow�s challenges. This 'intelligent-DENSITY' model is designed to produce bales (120 x 90) with up to 25% higher bale density in tough dry straw conditions compared to conventional large square balers. The patented TWINPACT double plunger system is the basis of this increase in bale density, whilst avoiding high peak loads on the machine.

Apart from the density, the bale channel, driveline and transmission have been upgraded which lends to further cost savings for the operator. A 200hp tractor is more than capable of producing 500kg plus bales, providing you significant fuel savings. The result: a more profitable baling operation in both conventional crop production and the most challenging environments where energy crops and biomass are grown.
SB 1290 iD baler at work

Your benefits

Extremley high-density bales, low power requirement

The torque regulation system ensures a perfect balance between capacity and density.

A perfect balance between capacity and density

The KUHN patented torque regulation system on all SB 120 cm bale channel models ensures a perfect balance between capacity and density. The system consists of plunger rod load pins that measure the plunger force and an angle sensor that measures the crank angle. Throughout the complete plunger cycle the exact torque is calculated. The benefit of this sophisticated measuring method is that up to 5% higher bale density can be achieved when driving at a capacity of 25 t/h. This results in a higher transport and handling efficiency.


Consistently shaped bales provide more than just aesthetic appeal. A dense, consistently filled bale represents quality in every form. Square bales are easy to handle and stack. In addition, they are much more stable during transport than a poorly formed bale. In silage applications, a square-edged bale indicates less air content, resulting in higher quality feed.

The KUHN POWER DENSITY system, a single feeder fork design, proves that a well-engineered active pre-chamber filling system can eliminate complexity. This pre-chamber system ensures consistently filled wads and results in heavy, square-edged bales regardless of the swath condition. The single feeder fork combines two functions into one mechanism, eliminating unneeded components and complexity and resulting in lower maintenance costs.

How does it work?

1.The INTEGRAL ROTOR actively delivers the crop to the pre-chamber.
2.The feeder fork (blue) provides an active filling of the pre-chamber.
3.The single-acting feeder fork continues to form the bale wad until the measuring plate (red) is pushed back with a predetermined force.
4.Once the measuring plate is pushed back, it activates the second function of the feederfork system. The fork makes a different movement that empties the pre chamber and pushes the perfectly formed wad into the bale chamber.
The pre-chamber system ensures consistently filled wads and results in heavy, square-edged bales.

The bale chamber

The specially designed bale chamber of the KUHN SB 1290 iD is the result of more than 35 years of experience in big square baling. An active pre-chamber filling mechanism with a newly designed mechanical feeder fork steering system, secures the production of evenly filled bales.
A 3.75m long bale channel combined with the pressure control system ensures optimal control of the bale density. Highly resistant, replaceable wear plates for baling in dry dusty energy crop conditions are integrated into the machine design. A funnel shaped pressure door and a 7-beam top door design guarantee perfectly shaped bales and extra friction.
With the 3.75m-long bale chamber of the LSB, there is plenty of space to form a perfect bale.

The double knotting system

The SB 1290 iD is equipped with a double knotting system. Via electronic knotter monitoring, the driver has accurate information concerning twine tension at all times and receives an alarm if an issue arises. The knotting progress can be monitored directly from the tractor cab.

While baling, an upper (blue) and lower (red) twine is fed to the bale. Because the twine is not slipping around the bale, there is no tension on the twine during the bale formation.
Step 1: As the bale reaches the desired length, the needles (grey) are activated and move upwards towards the knotter to start the knotting cycle. In this first step the bale is finished with the first knot.
Step 2: Once the first knot has finished the bale, the second knot connects the upper and lower twine again so the next bale can be formed without stress on the twine during knotting.

All double knotter models are equipped with 2 hydraulically driven turbo fans. The agressive fans guarantee a clean knotter area for an optimal knotter performance.
Schematic overview of a double knotter

Optimal crop intake to meet your capacity needs

With a pick-up width of 230 cm, the baler is capable of working in all swaths

Optimal crop pick-up

The pick-up is designed to match the full capacity of the machine. With an intake width of 230 cm, the baler is capable of working in all swaths. The reliable cam-track system will not let you down, even in the harshest conditions. To adapt the machine to your fields, you have the choice between fixed and pivoting pick-up wheels. The pivoting pick-up wheels are semi-pneumatic and therefore ideal for rough terrain and stony soils.

To better meet your operation's specific needs, there are two intake options available for the SB 1290. Select from one of our patented INTEGRAL ROTORS � The OPTIFEED non-cutting rotor or the 23-knife OMNICUT cutting rotor.


All KUHN balers, cutting or non-cutting versions, are equipped with the INTEGRAL ROTOR technology. This simple, maintenance free intake system ensures even feeding regardless of the various (crop) conditions. The short distance between the rotor and pick-up yields an outstanding crop flow. This force-fed intake makes higher forward speeds possible for outstanding productivity and reduced crop damage.

All rotor tines are made out of Hardox� wear plate and offer excellent durability in abrasive crop conditions.
All KUHN balers, cutting or non-cutting versions, are equipped with the INTEGRAL ROTOR system.

Non-cutting: OPTIFEED rotor and Biomass OPTIFEED rotor

The 48 cm diameter OPTIFEED rotor design, where rotor tines - made out of Hardox� wear plate - and auger function are combined on one shaft, helps even out the swath by spreading the crop evenly for consistent bales every time. When crop cutting is not required, the OPTIFEED system ensures a controlled and consistent crop flow to the pre-chamber. With the rotor, an additional level of protection is given to the machine.

The 60 cm diameter Biomass OPTIFEED rotor design combines all the benefits of the standard OPTIFEED rotor with boltable rotor tines made out of Hardox� wear plate for excellent durability and easy exchange. These rotor tines are specially designed for aggressive energy crops such as sugar cane leaves.
The�48 cm diameter OPTIFEED rotor design, where rotor tines and auger function are combined on one shaft

Cutting: OMNICUT 23 knifes (OC 23)

The OMNICUT 23-knife rotor (OC 23) offers a cutting length of 45 mm on the 120 cm wide bale channel models. With a rotor diameter of 60 cm, the rotor will process every swath that is placed in front of the baler. The knives on the OC 23 have individual hydraulic protection. This ensures a perfect cutting quality regardless of working speed and crop. The operation of the knife group configuration is easily done from the tractor cab via the terminal. The operator can choose from the following knife group configurations: 0 � 11 � 12 � 23. The boltable rotor tines made out of Hardox� wear plate guarantee easy exchange. Together with the standard cassette system for easy knife changing, you not only invest in cutting quality but, above all, in driver comfort.
The OMNICUT 23-knife rotor (OC 23) offers a cutting length of 45 mm

Extreme robustness, durability and user comfort

Gearboxes and shafts ensure a perfectly synchronised machine with easy maintenance.

Heavy-duty driveline

Perform at maximum capacity with a highly secure intake system. Synchronised drive of components is made by gearboxes and shafts. This ensures a perfectly synchronised machine with easy maintenance. The heavy-duty driveline features self-resetting cam-clutches. The benefit of these clutches is that they offer the possibility to use the machine at maximum capacity without worrying about time consuming shear bolt replacements. The driveline layout is simple, clean, and easy to service and maintain while minimizing the overall number of moving parts.


Productivity at your fingertips<br />User interfaces are the key to achieving the productivity you expect from your KUHN machine. We listened carefully to the users of our machines to develop our new user interfaces and terminals. The objective is to have a clear view of what your machine is doing at any time and to have all important settings at your fingertips. This ensures that you have full control of your machine.

SB at work in the field