GBS Gearbox Services international brand of Schaaf- en Boorwerk Rotterdam B.V.
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Inspection and repair on KELLER AN725 gearbox

Inspection and repair on KELLER AN725 gearbox

  • KELLER gearbox
  • AN725
  • Input=___ rpm / ____ KW
  • Belgium

Scope of work:

We performed an inspection and repair on a gearbox KELLER AN725.

This client from Belgium came to us with this KELLER AN725. We inspected the gearbox and performed a repair. After a succesful testrun we shipped the gearbox back to the client.

GBS international was invited to analyze and repair the damages in cooperated with the crew on board at Zeebrugge in Belgium.

During the analysis, the following issues have been observed.

1. On shaft V40 the bearing L70 (engine side) was damaged. Particles of the damaged bearing fell down between the gears V30, V40 and V50. Bearings of shaft V40 were mounted with sleeves. After measurement of the sleeves, ovality was observed. OSM Belgium (On Site Machining BVBA) was invited to renewed the sleeve on board the Reynaert.

2. After measurement of the gearbox case (section above the input shaft) GBS observed misalignment on the bearing bore (L20 behind the rotary seal and L10). The cover of the gearbox does not fit properly. Misalignment running marks were observed on the white metal bearing L20. During the docking in Klaipeda (march 2017), misalignment was also observed by our Service Engineer. During the docking, no further investigation has been carried out for the misalignment.

3. On the white metal bearing L10, running marks has been observed. After inspection GBS observed that the temperature sensor was mounted against the bearing L10. The outside of the bearing was damaged by the gearbox cover and GBS decided to renewed the bearing.

Video scope:
A video scope was rented and used for the inspection of the clutch and bearing L60 of the gearbox. With a video scope, clear images can be viewed and recorded at locations with limited accessibility.

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Location - date:

Belgium - September 2017

Other types of same brand: