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WG 900: The New Grimme Web Grader

WG 900: The New Grimme Web Grader

Web graders are used to grade different sizes when storing potatoes and onions. For the 2020 season, GRIMME has extensively upgraded the proven and very gentle web grader WG 900.

Larger effective grading surface

Due to an optimized design the effective grading area could be increased by 15 % compared to the previous model. However, the overall length of the grading web has remained the same, so that the available grading webs of the previous model can still be used. In addition, the drop step from the grading web onto the grading cross conveyor could be reduced by 60 mm.


The unique 'QuickConnect' quick-change system reduces downtime by up to 70% compared to conventional web-joiners. Thus grading webs can be adapted to the desired tuber size more quickly and easily.

To join the two ends of the grading web, the hook elements are simply clicked onto the connecting rod.

To open, the quick change system can easily be disconnected by hand. QuickConnect is available for all GRIMME WG 900 grading units ex works or as a retrofit kit.

Increased crop protection

Due to a permanent contact between the redesigned eccentric agitator and the rubber fabric grading web, a uniform undulating web movement is generated, which contributes to a significant improvement of the grading performance.

Web graders are used to grade different sizes when storing potatoes and onions.

Furthermore, the continuous contact of the eccentric agitator gently lifts any wedged crop out of the meshes.

Simplified integration into the storing line

The new 800 mm wide grading cross conveyor enables the sorted crop to be transferred to subsequent conveyor belts without any bottle neck. For even easier integration into the storing line, the machine can optionally be equipped with a height-adjustable chassis.