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Using Flux Core Wire

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  • Using Flux Core Wire

    Hi Guys,

    I am fervently reading the manual that came with my HH187 and have an unanswered question. When doing my research prior to buying my welder I remember Lincoln stating that you must use a knurled feed roller for flux core wire. I see no mention of that in my HH187 manual. Can I just go ahead and use the.030/.035 groove on the feed roller that came with the welder?



  • #2
    I did, and it worked/works fine.



    • #3
      V groove, U groove, knurled groove they all will work.

      Flux core is has very thin tube wall easily deformed in V groove with excess drive roll pressure.
      But V groove is more forgiving of small wire size variations.

      U groove tends to deform wire less than V groove.

      Knurled groove gives better grip on wire. Knurled groove will tend to file wire when it slips because low pressure drive roll pressure causing more filings in liner. Can emboss notches into wire with high drive roll pressure that increase contact tip wear rate.


      • #4

        Thanks for the feedback. In a few minutes I will be off to lay my first bead!

        I will let you guys know how things turned out.



        • #5
          Alabama Chevy,
          As others have mentioned, it will probably work just fine. Although, it is not the right tool for the job. Smooth rollers are designed for GMAW hard/solid wire. The knurled rollers are designed for use with FCAW and metal core wires. When using smooth rollers for FCAW and metal core there is the potential for variations in feed rates resulting in voltage fluctuations. I would say use the smooth rollers unless you run into variations in voltage then consider changing them out.
          "Religion is regarded by the common people as true, by the wise as false, and by the rulers as useful."

          -- Seneca the Younger


          • #6
            My bigger feeders for the engine drives have knurled drive rolls, but I've never put knurled rolls in any of my 210A or smaller MIG machines, and they'll all run FCAW without issues.
            Last edited by MAC702; 11-04-2008, 07:55 PM. Reason: Forgot to eat my vegetables...


            • #7
              with or without?
              Ed Conley
              Screaming Broccoli, Inc
              Miller Passport Plus, Spoolmate 100
              SO 2020 Bender
              Miller 125c Plasma
              "Hold my beer while I try this!"


              • #8
                If it was such a huge problem, Hobart would not supply the machines set up for fluxcore, with a sample roll of fluxcore in the box, and smooth drive rolls. It works fine for the intended application.
                Trailblazer 302 * Millermatic 212 * Syncrowave 180SD * X-Treme 12VS Feeder * Spoolmate 3035
                Thermal Dynamics Cutmaster 52 Plasma * Lincoln 175 MIG

                Victor Superrange II * Victor Journeyman

                Hobart HH 125EZ


                • #9
                  My HH210 works fine with the standard roller and flux core.
                  Hobart Handler 210 mig , 80cf bottle of C-25 mix
                  Bokrand GmbH pocket mig , 110v
                  Clarke 101E stick , 110v
                  Craftsman 10" drill press
                  Craftsman 12" bandsaw
                  HF 12 ton hydraulic press
                  Black Max 6hp 60gal air compressor
                  2 4 1/2" grinders
                  Porter Cable 1410 ,cold cut chop saw
                  Makita 14" ,abrasive chop saw
                  50ft 8/3 extension cord
                  Makita saw
                  Arctic Cat generator with adapter cable for welder.
                  Eastwood 135 mig 110v , 20cf bottle C-25 mix