Inspection and repair of FLENDER PEAS 4280,1 gearbox

A client from Netherlands came to us with this FLENDER PEAS 4280,1 gearbox. We investigated the unit and did a total overhaul. After the overhaul was done, we did a test run and prepared the gear unit to be shipped back to this client.

The work consisted of:

The condition of the gearbox is unacceptable.

Heavy impressions and scratches observed on the gear of the planetary system. The planetary wheels and sun gear of the planetary system exhibited considerably less heavy impressions and scratches compared to the toothed wheel. This is probably the result of a difference in hardness of the tooth surface.

Slight scratches and impressions were observed on the loaded flanks of the gear wheels from the parallel section.

Heavy impressions and scratches were observed on the bearings of the slow shaft. The bearings of the intermediate shaft show scratches and impressions. And the bearings of the fast shaft show slight impressions and scratches.

Large quantities of steel particles have been observed in the bypass filter. Large quantities of steel particles have also been observed in the oil supply for the bearings of the slow shaft. It is likely that the bypass filter lets through steel particles.

Slight leakage observed on the seal of the input shaft.

The damage mentioned above is secondary damage. It is likely that the sprocket in the bottom has broken.