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  • Bearing Anti wearing type

    Discussion in 'The main mechanical design forum' started by Mekanimo, Jun 29, 2012.

    1. Mekanimo

      Mekanimo Member

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      Hi ,

      I'm working on improvement of a screw conveyor that conveys dust (raw meal: limestone powder & Schist) in cement factory.

      The intermediate bearing (sleeve bearing) is being replaced every 3 months (2000 hours) due to wearing failure which costs a lot.

      Please suggest methods to prevent wearing rather than changing the bearing material we already tried that , I am suggesting sealing but don't know which type , so anyone has an idea please do share.

      Thanks
       
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    3. Mekanimo

      Mekanimo Member

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      Ok I suggest also a labyrinth seal , we may cut many grooves in the bearing and cover this grooves by rubber or asbestos , what do you think?
       
    4. marine&hydraulic

      marine&hydraulic Member

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      What speed is this conveyor running at, what weight is on the conveyor,sounds as if you have a dust issue but need more details ..photograph even
       
    5. tonycro

      tonycro Well-Known Member

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      if its only failing from ingress of contamination - Better sealing is really the only solution, all bearings hate dust/debris getting into the gaps!

      labyrinth sealing up to IP56 and then positive pressure in the outboard seals ?
       
    6. vic.blackall

      vic.blackall Well-Known Member

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      A simple labyrinth seal with compressed air supply to the bearing side of the seal.
       
    7. levnayman@hotmail.com

      [email protected] New Member

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      Hi, in the past we used alloy wear resistant plates from GRABE. It depends of application of course. GRABE is a German company
      specialized in making such products. Look it up on their website.

      Good luck, Lev Nayman, Mechanical Engineer at Woodings Industrial
       
    8. Mekanimo

      Mekanimo Member

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      Thanks but I looked up for GRABE i couldn't find it , are you sure of the name?
       
    9. levnayman@hotmail.com

      [email protected] New Member

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      Grabe

      Hi, Yes I am absolutely sure. We still have an agreement contract with Grabe.
      Try this link and click to translate this page because it is in German.
      http://grabe-kg.de/index.php?id=verschleisschutz-translator

      lev nayman
       
    10. Mekanimo

      Mekanimo Member

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    11. thirei57

      thirei57 New Member

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      Applying overpressure inside/around the bearing, elaminates the influence of cement and dust from the outside on the wear of the bearing. In combination with a narrow (labyrinth) seal gap, the necessary outward bound air flow can be reduced drastically. Since I do not know the design, I'm not sure if there are possibilities to implement such a feature.

      Good luck ..., Thijs Reijnders, Mechatronic system designer, Philips Innovation Services
       

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