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Belzona® Injects New Life Into Hydro Dam Bearing



Power (POWR)



Mechanical Power Transmission (MPT)


Customer Location:

Hydroelectric plant, Missouri


Application Date:

February 2012


Application Situation:

Customer had damaged the bearing surface and was looking for a cost effective long term affordable repair.



While running a high voltage test on the bearing and isolator ring a section of the bearing was damaged when a spark melted one area.



Belzona® 1221 (Super E Metal)

Belzona® 1321 (Ceramic S Metal)



Cast iron


Application Method:

The application was carriedout using a modified version of Belzona Know-How System Leaflet MPT-2. The Belzona® 1321 was injected into a mold that had been treated with Belzona® 9411 (Relaease agent) after the Belzona® 1221 had been used to seal all the open areas to contain the injected material within the repair area.


Belzona Facts:

The alternative option to Belzona was to have a machine shop come in and weld up the area and then machine it back down.  The heat involved was a major concern. Estimated cost was $50,000 for this repair. The Belzona repair was 1/10th of the cost and completed within a few hours.


Photographs Description

  1. Close up of the damaged surface
  2. Mold being treated with release agent
  3. Injecting the Belzona® 1321
  4. Completed repair
Case study pic one


 Case study pic two


 Case study pic three


 Case study pic four


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