003 015 830_rotopala_reductor 3
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datosTRANSCRIPT
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Gabriela Mistral, Rotopala HR 5500 Reductor N 3 de Rueda de Capachos
BE`13 003 015 830_Rotopala_reductor 3.docx 12.09.2013 Page 1 of 4
Advert of DGM for leaking in the new gearbox, delivered 07/2013
1 Information
DGM has advert leaking at the high speed shaft in the new gearbox on Tuesday, September 9, 2013.
DGM is concerned that an internal seal does not work. To improve the corrosion protection DGM has the gear completely filled with oil.
Photos: DGM
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Gabriela Mistral, Rotopala HR 5500 Reductor N 3 de Rueda de Capachos
BE`13 003 015 830_Rotopala_reductor 3.docx 12.09.2013 Page 2 of 4
2 Comment of TAKRAF
Normally, it is not intended that the gear housing is completely filled with oil.
When the gearbox it a long time out of service, to be switched on at intervals of three to six months, the oil pump of the gear box. For this we need the oil level of operation, according to the manual.
3 Cause of the leakage
In the housing of the bevel pinion shaft is installed one oil seal (17). For the protection toward dust existed one labyrinth seal on the drive shaft. We have between the two seals a chamber. In case of defect in the shaft sealing ring, to hear the oil is absorbed. This chamber has one outlet directly run into the gear box housing.
oil seal ring
chamber
outlet
labyrinth
detail of drawing 42008168
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Gabriela Mistral, Rotopala HR 5500 Reductor N 3 de Rueda de Capachos
BE`13 003 015 830_Rotopala_reductor 3.docx 12.09.2013 Page 3 of 4
You can see in the photo, the outlet of the chamber is connected with the gear box housing.
DGM has fill up the gearbox with oil over the bevel pinion shaft. The oil came in the chamber through the outlet pipe and go out through the labyrinth.
outlet tube
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Gabriela Mistral, Rotopala HR 5500 Reductor N 3 de Rueda de Capachos
BE`13 003 015 830_Rotopala_reductor 3.docx 12.09.2013 Page 4 of 4
The way of the oil through the labyrinth of the input shaft. Calama, September 12, 2013
Bernd Ende Ing. dipl. (FH)
high oil level
Oil came from the inside of the gear box housing
go through the chamber
and came out through the labyrinth.