SB 1290 baler silhouette

Designed and built to last

The KUHN SB 1290 is a multifunctional large square baler for all crop conditions. This professional machine is designed and built to last.

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With the SB series KUHN releases a new generation of large square balers. Designed to achieve high capacity and high bale weights combined with excellent driver convenience, the balers boost the profitability of your baling operation. The robust driveline makes these balers extremely durable.

The SB 1290 baler is one of the toughest, most reliable large square balers for bale size 120 x 90 on the market. The baler combines high output and maximum reliability to serve as a perfect fit for professional crop producers. The SB 1290 has been designed with simple, yet efficient features including INTEGRAL ROTOR technology and the POWER DENSITY system to produce high density bales in all crop conditions.

KUHN large square balers feature a unique, simple driveline with a large flywheel and the longest standard bale chamber to provide outstanding durability and performance. Hydraulic-driven fans keep your double knotters clean.
SB 1290 baler at work

Your benefits

Consistent, dense, high-quality bales

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.

POWER DENSITY � The KUHN Solution

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

With the 3.4m long bale chamber of the SB 1290 D, there is plenty of space to form a perfect bale. The combination of aggressive retainers and pressure door shape brings an aggressive compaction and gentle expansion of the bale. 46 plunger strokes per minute result in a high compaction capacity. The plunger is guided via 4 large rollers with a diameter of 125 mm for maximum service life.
With the 3.4m-long bale chamber of the LSB, there is plenty of space to form a perfect bale.

The double knotting system

The SB 1290 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.

INTEGRAL ROTOR Technology

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.

Equipment

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 1290�in transport position

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