The innovative, unique drive concept has been designed for tractors outputting from 200 to 500 hp. This means that the JUMBO can be operated with a wide range of tractors.
The driveline has a double wide-angle PTO shaft without a clutch and is powered by a Powerband. Optimum power transmission to the rotor is ensured by angular/planetary gears in the rotor drive.
The Powerband delivers maximum power transfer in all operating conditions. It ensures smooth running and a damping effect in changing operating conditions. This protects the mechanics and reduces maintenance and wear costs to a minimum.
A PTO shaft with an overload protection system is subjected to extreme wear-intensive stress when used in high-performance harvesting equipment. The angling of the PTO shaft during operation produces torsional vibrations which prematurely trigger the overload protection system and negatively impact throughput.
That is why PÖTTINGER decided to decouple the overload protection from the PTO shaft.
Thanks to the newly developed drive concept the JUMBO can be continually operated at up to 3,000 Nm. The result is optimum protection of all drive components against unnecessary stress and wear-intensive blockages.
Irregular swaths can be picked up with no reduction in speed and no losses, even when cornering. This increases loading efficiency enormously.
A dynamometer bolt on the belt drive measures the current loading torque.
Detection of an incipient overload significantly reduces blockages.
The drive train is protected by a cam-type clutch immediately in front of the angular/planetary gears.
Powerband
The 6-groove high-performance belt has been designed for extra long life and guarantees reliable power transmission. It can cope with the toughest demands and also ensures smooth running in all operating conditions. Operating noise is reduced to a minimum.
The belt’s damping effect in changing swath conditions benefits loading performance.
The Powerband is maintenance-free.
Soft start
Thanks to its soft start, the drive belt enables operation of the rotor and beater rotors even under full load. There is consequently no need to advance the scraper floor when unloading with beater rotors. The scraper floor chains and drivelines are protected, which significantly increases both reliability and the service life of all components.
The drive belt on the JUMBO makes a conventional clutch system unnecessary.
PTO shaft without overload clutch
The innovative design of the drive belt means that no overload clutch is needed on the PTO shaft.
Conventional systems lose as much as 20 % of torque owing to angling and the resultant vibrations, especially when cornering.
The JUMBO is therefore able to draw on the full torque of 3,000 Nm, whatever the operating status.