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Duty Cycle, how often you really exceed it?

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  • Duty Cycle, how often you really exceed it?

    I know I don't weld as hard as the professionals but I can't remember ever exceeding my duty cycle. My lil Blue Star Jr. is a tank. It says only 60% @90a but I know it runs hotter than its max 100a and have definitely exceeded the 6 min on "MAX". Haven't seen the light on my mm211 either. Anyway I know most of you guys probably have,I'm just throwing the topic out there.

  • #2
    I had a blue star.. it was a nice lil machine. I wish i still had it for little stuff, i liked how light it was. I really dont know what happens to a blue star if you exceed the duty cycle.. i dont think it shuts off the arc but i dunno... does it? I know the millermatics shut of... they shut off for about 15 minutes, i do it all the time with my 180

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    • #3
      Duty Cycle, how often you really exceed it?

      Yeah that lil thing is my dude. I wouldn't sell it for nothin'!! I think it's really underrated. I mean Miller makes a helluva engine drive, so doesn't surprise me.

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      • #4
        Hard to do as a hobby weldor.

        Even a 20% duty cycle 2mins out of 10

        watch your clock for 2 minutes straight


        Most of the time you are moving around, starting and stopping so hitting the duty cycle is rare. If you are then you need a bigger machine.
        Ed Conley
        http://www.screamingbroccoli.net/
        MM252
        MM211
        Passport Plus w/Spool Gun
        TA185
        Miller 125c Plasma 120v
        O/A set
        SO 2020 Bender
        You can call me Bacchus

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        • #5
          Duty Cycle, how often you really exceed it?

          Glad for the hse I have a plenty. If not we just goto work and bring home the Boobcat.

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          • #6
            Duty Cycle, how often you really exceed it?

            My girl has always said my duty cycle needed to be longer and that I really do need a bigger machine.

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            • #7
              Lol, Boobcat! I hit my duty cycle on my Diversion 180 all the time on aluminum, and quite a few times on my 211 as well, the spool gun can't keep up at all! Been through 100 tips in a year!! But gonna love the upgrades!! :-)

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              • #8
                Never had one shut off on thermal.

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                • #9
                  Duty cycle... or Thermal shutdown

                  It seems like a lot of us are confusing duty-cycle with thermal shut-down.
                  Professional Auto Mechanic since 1974
                  My own shop since 1981
                  Cya Frank

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                  • #10
                    Hit the 50 amp breaker in the electrical panel with the Syncrowave so many times, I upgraded to a Dynasty.

                    Aluminum takes beaucoup amps.

                    Have never tripped a machine's thermal protection shutdown, even the little 150 Maxstar's.
                    Dynasty 350
                    Bobcat 250
                    Maxstar 150S
                    Titanium 9400
                    Purox O/A
                    Cutmaster 42

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                    • #11
                      Originally posted by Frank865:308506
                      It seems like a lot of us are confusing duty-cycle with thermal shut-down.
                      Well their not the same thing but they are definetly related... when you exceed the duty cycle the machine will shut down.. you are supposed to follow the duty cycle so you don't overheat the machine

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                      • #12
                        I don't think I have ever exceeded the duty cycle on any of my machines, but I have popped the thermal breaker a few times and also the circuit breaker a couple of times. But, I really only pop either of them when working on THICK aluminum and try to push things a little hard.
                        Don J
                        Reno, NV

                        Never pick a fight with an old guy. Old guys are too smart to fight and get hurt. They'll just kill you and get it over with.

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