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High temperature at pump NDE bearing

Hi friends we are facing high temperature issue in Water feed pump NDE ball bearing (7309 ( 2 bearings Back to back arrangement)).

Pump specifications are given below

200 KW

Rated pressure 11 Bar

Sump lubrication type

Manufacture :Thermomechnica pumpfeed 1 pump



Overall pump vibrations are well within the limit ( 4 mm/s rms at POV)

We have dominant frequency at 1X, 2X along with 6X(VPF).

Pump NDE bearing reached to 60 degrees within 2 hours of operation whereas Pump DE bearing temperature found as 45 degrees. All other identical pumps maximum Pump DE & NDE temperatures are found as 44 & 45 degrees.

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Images (2)
  • mceclip0
  • feed pump
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