Variator with spring for CLAAS combine harvester, part no. 00 1819 335.1 and 00 0355 752.0 Agrosikora

Construction and operation of the variator with spring for CLAAS combine harvester

The variator with spring for CLAAS combine harvesteris a pulley assembly (Vari Pulley Assy) that allows for stepless change of rotational speed without the need for manual gearbox intervention. Thanks to the variable working diameter of the pulley,the variator with spring for CLAAS combine harvesterallows for smooth adjustment of the working elements' speed, which is crucial for machine efficiency. The spring mounted in the system acts as a stabiliser — it maintains belt tension and automatically adjusts the variator disc positions to changes in load. The variant with part number 00 1819 335 1 (formerly 00 0355 752 0) is used in modern CLAAS combine harvester models, particularly in systems requiring precise RPM regulation.

Typical location of the variator in the CLAAS combine harvester construction

The variator with spring for CLAAS combine harvesteris an integral part of the machine's drive systems and is located in direct proximity to the driven components. In the threshing system, it is used to regulate the speed of the threshing drum or separation rotors, which is essential when harvesting various types of crops with varying moisture parameters. In some hydrostatic solutions,the variator with spring for CLAAS combine harvesteris also used in the ground drive system, controlling the machine's travel speed. In the cleaning section of the combine harvester, it appears in the fan drive system, responsible for setting optimal airflow conditions. In each of these cases, the component is connected to the drive shaft by a V-belt, and its location depends on the specific model and machine configuration.

Function and importance of the variator with spring in machine operation

The main task performed bythe variator with spring for CLAAS combine harvesteris the smooth and precise regulation of the rotational speed of working components without the need to interrupt work or change gears. It enables rapid adjustment of machine operating parameters to current field conditions, which directly affects harvest quality and the reduction of losses.The variator with spring for CLAAS combine harvesterstabilises belt tension and reacts automatically to changes in operating resistance, adjusting the pulley's working diameter. This results in continuous optimisation of parameters, higher work efficiency, and reduced wear on drive system components. A well-functioning variator limits belt slip and maintains steady revolutions under varying loads.

CLAAS combine harvester models using this variator

The variator with spring for CLAAS combine harvester, identified by number 00 1819 335 1 (or its predecessor 00 0355 752 0), is used in many models of combine harvesters from this brand, particularly in units equipped with rotary systems or a high degree of drive automation. It is a standard component in models from theCLAAS LEXIONseries, including Lexion 570, 580 (500 series), Lexion 600 (600 series) and Lexion 730, 740, 750, 760, 770, and 780 (700 series).The variator with spring for CLAAS combine harvesteracts as a speed regulator for rotors, threshing units, or fans in these models. Due to the potential existence of different design versions, we recommend contacting us.