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Thread: when to change burrs

  1. #1
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    when to change burrs

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    I have a mazzer mini that is 3 years old.
    How do i tell when the burrs have warn and its time to change them?
    from what i can tell they still seem good, but i am no expert.
    How long is the usual life on them, or maybe a better question, how many kilos of coffee before replcement is required

  2. #2
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    Re: when to change burrs

    Quote Originally Posted by JohnA link=1177401373/0#0 date=1177401373
    ...from what i can tell they still seem good...How long is the usual life on them, or maybe a better question, how many kilos of coffee before replcement is required
    You have it about right with your first observation but if you multiply out a reasonable estimate of 15 kilos home use per year (say an average 300 grams domestic use per week), and you wouldnt look at the grinding plates until theyve run about 400 or more kilos through, thats quite a number of years trouble free use before you need to worry. *I think thats about 25 years no?

    Anyway work on say 400 kilos per set of plates, and divide back by your weekly usage. At home this usually means tens of years use. In a cafe, different story as they may use in one week what you will use in a whole year at home.

    Its surprising how much life a set of plates actually have in them when you look at it this way, and puts a different perspective on the scare mongering that sometimes goes on in internet forums about plates being worn out.

  3. #3
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    Re: when to change burrs

    yes, i roughly do around 400grams a week more on the weeks were we have alot of guests over the weekend.
    hmm 25 years, hopegully i would be on a new machine by then and hopefully still alive :)

    Thanks for the repy

  4. #4
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    Re: when to change burrs

    Nice to know Curmudgeon.
    Ill diarise for 2026 then.

  5. #5
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    Re: when to change burrs

    I might amend the above ever so slightly - forever pedantic. Read on.

    Id work on around say 400kg for a cafe grinder. But a normal size cafe grinder has larger diameter plates than small commercials like mm (and your m5 Thundergod) sized grinders.

    In which case my crystal ball would call for me to round down from 25 years in home use at an average weekly use of say 300 grams beans, to somewhere approaching 20 years!

  6. #6
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    Re: when to change burrs

    Fair enough.
    I might then round down to 2021.
    Ta.

  7. #7
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    Re: when to change burrs

    basicaly for me then, i will never have to wory about changing them, esspecialy the way i upgrade stuff.

    Suprised i have kept these for so long

  8. #8
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    Re: when to change burrs

    Buy 4 burrs and itll last you a lifetime or 5 if your lucky:P:)
    Thats if you start drinking coffee when youre 1years old ::)

  9. #9
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    Re: when to change burrs

    Im already mid 40s.
    I more set will probably do me considering the Macap is only 6 months old.



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