Many contractors notice that their forage harvester no longer performs like new, without realizing that the teeth on the upper rear feed roller are worn. Westerink Parts supplies new, razor-sharp feed rollers that grip the crop perfectly, restoring a clean cut and maximum throughput.
Bas explains why the grip of the upper rear feed roller determines your chop length.
Why is this roller so important?
The upper rear feed roller is the final roller before the crop enters the cutterhead. It has three crucial functions: compressing the crop, holding the crop mat so the knives do not pull it in prematurely and feeding it at the correct speed. Unlike the front rollers, this roller must provide the grip on its own because the lower roller is smooth to provide compression.
How do you recognize a worn roller?
In the video, Bas shows the difference between a new and a worn roller. Check the following points:
-
Rounded teeth: On a worn roller, the sharp tips of the teeth become rounded and grip is lost.
-
Shorter teeth: Wear makes the teeth shorter and may even cause them to lean slightly backwards.
-
Symptoms: A worn roller causes jerky feeding, irregular chop length and crop wrapping around the front rollers.
The result of a new roller
Once a new roller is installed, the machine regains its grip. The crop is fed at a constant speed and the suction effect of the cutterhead can no longer pull the mat in too early. This immediately produces a better product in the trailer and a smoother-running machine.
In brief
-
Function: Compressing, holding and feeding the crop immediately before the cutterhead.
-
Recognizing wear: Check the sharpness and length of the teeth. Rounded teeth mean a loss of control.
-
Consequences of wear: Irregular chop length, jolting feed and a risk of wrapping.
-
Solution: Westerink Parts keeps new upper rear feed rollers in stock for a clean cutting result.
Upper rear feed roller for Claas 800 series
Upper rear feed roller for New Holland FR
