SB 1290 iD High-Density Balers

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 so you can operate the machine at peak performance and achieve the hightest bale density. 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. A perfect square-edged bale reduces the risk of air entrapment during wrapping. This stimulates conservation of the bale and ensures a better feed quality.

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 flakes 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 cost.

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 flake 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 feeder fork system. The fork makes a different movement that empties the pre-chamber and pushes the perfectly formed flake into 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.

The SB 1290 is equipped with a double knotting system. 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.

The knotting process is monitored directly from the terminal, providing the driver with accurate information on twine tension during the baling cycle. An alarm goes off if an issue arises, allowing the driver to take action and prevent downtime accordingly.

Two massive hydraulically driven turbo fans are equipped as standard and deliver optimal knotter cleaning performance in the most challenging and dustiest conditions.