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?
With the 3.4m long bale chamber of the SB 1290, 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.
For maximum driver convenience the SB 1290 is standard equipped with the heaviest flywheel in their segment. This 485 kg heavy-duty flywheel guaranties a unique smooth running machines, which offers the operator maximum driving comfort during the daily operation.
The unique crop guard design, in combination with a high torque on the INTEGRAL ROTOR and on the feeder fork driveline, ensures a high intake capacity while offering extreme endurance. The balers make use of a 2.30 m wide cam tracked pick-up with no less than 5 tine bars, in order to allow the pick-up to run at a lower speed. Consequently, an excellent raking job and the highest versatility in various crop conditions is guaranteed.
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.
Whether you are baling dry straw, hay or wet silage, the POWER FEED ROLLER allows you to take capacity to the next level. Difficult crop conditions or inconsistent swaths could pose a challenge for an intake rotor. With the KUHN POWER FEED ROLLER this belongs to the past. This driven crop roller actively follows the height of the swath. As a result, the crop is slightly compressed and evenly distributed when entering the intake rotor. Inconsistencies in the crop flow are smoothed out, delivering a steady crop flow towards the rotor.
Peak loads as a result of irregularities in the swath are avoided. The smooth and steady crop intake ensures a reduced power requirement and a smooth running machine. Moreover, wear on the machine is reduced as less strain is applied on the intake.
Your benefits are :
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 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.
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.
To use the machine at maximum capacity, a flawless protection system is required. All main intake components of the KUHN large square balers are fitted with a cam-type clutch. With this non-stop safety system you can unblock the machine from the operator seat, in the event of an overload. The pick-up, INTEGRAL ROTOR, main drive and feeder fork are protected with cam-type torque limiters, which are automatically activated in the event of an overload. The respective cam clutch then activates and the intake is stopped. The clutch re-engages when the operator reduces the PTO speed.
The design offers perfect accessibility to the inside of the machine during daily inspection and maintenance. For more safety, the knotter deck is equipped with solid stairs and a safety railing. The safety railing can be folded down easily to reduce the height of the machine during transport. Moreover, the driver can benefit from optimal comfort thanks to the heavy flywheel, the load sensing hydraulics and the torque regulation system.
The load sensing hydraulic system is used for automatic axle locking, knife steering, roller chute and bale ejector functionalities. The hydraulic system can easily be switched mechanically to an open centre operation if using it in combination with a tractor without a load sensing hydraulic system.
|SB 1290||SB 1290 OC|
|Bale height (cm)||90||90|
|Bale width (cm)||120||120|
|Bale length (cm)||60-300||60-300|
|Pick-up width (cm)||230||230|
|Number of pick-up tine bars||5||5|
|Pick-up crop roller||as standard||as standard|
|Intake system||INTEGRAL ROTOR (with automatic cam clutch overload protection)||INTEGRAL ROTOR (with automatic cam clutch overload protection)|
|Number of knives||-||23|
|Theoretical cutting length (mm)||-||45|
|Knife protection||-||individual hydraulic|
|POWER DENSITY pre-chamber intake system||as standard (with automatic cam clutch overload protection)||as standard (with automatic cam clutch overload protection)|
|Plunger strokes (min-1)||46||46|
|Baling pressure setting||4 hydraulic cylinders, controlled by on-board hydraulic system||4 hydraulic cylinders, controlled by on-board hydraulic system|
|Binding system||6 double knotters||6 double knotters|
|Knotter cleaning||turbo fans driven by on-board hydraulics||turbo fans driven by on-board hydraulics|
|Automatic central greasing||as standard||as standard|
|Twine storage||32 rolls||32 rolls|
|Minimum PTO power requirement kW(hp)||103 (140)||121 (165)|
|PTO speed (min-1)||1000||1000|
|Hydraulic jack||as standard||as standard|
|Transport width (cm)||300 maximum (depending on axles and wheel size)||300 maximum (depending on axles and wheel size)|
|Transport height (cm)||326||326|
|Transport length (cm)||800||800|
|Parking brakes||as standard||as standard|
|ISOBUS compatible||as standard||as standard|
|Road lights and signalling||as standard||as standard|
|Minimum required tractor hydraulic connections||1 single acting and 1 double acting valve||1 single acting and 1 double acting valve|
|Service lights||as standard||as standard|
|Weight min - max (kg)||9950-12050||9950-12050|