Ryobimatic water system

Discussion in 'Ryobi Printing Presses' started by ABerg3860, Dec 14, 2023.

  1. ABerg3860

    ABerg3860 Member

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    The Ryobimatic water system is not everybody's favorite I know, but I have learned to use it and get good results, except for one problem. The manual says, and I have proven it to be true, that the rubber rollers are only good for 6 months. Does any one have any suggestions for lengthening that time?
     
  2. realaqu

    realaqu Member

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    I guess roller hardness is the key to check not time
     
  3. Mehanka Abortmaher

    Mehanka Abortmaher Senior Member

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    @ABerg3860
    Use a digital device to measure the hardness of rubbers on the Shore A scale. Also, try to collect shaft wear statistics by measuring a new shaft and shaft with a micrometer /caliper after half a year of operation. The manufacturer allows wear in diameter by 1mm, with further reduction in diameter there will be problems with adjustment. The reason for rapid wear is a variety of factors: abrasive, mineralization of moisture, improper adjustment, bearings, quality of the rubber layer, etc.
     
  4. alibryan

    alibryan Senior Member

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    The quality (or brand) of the roller covering is the first thing that’s important.

    The key to extending the life of that covering lies in the fountain solution you’re using, and your wash-up habits. These are the only things you have control over.
     
  5. Bunkerintegrated

    Bunkerintegrated Member

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    Ryobimatic Water System refers to any water-related system or equipment manufactured. This system may include various products and technologies developed by Ryobi for water-related purposes, including Water pumps, filtration systems, irrigation equipment, or other water management.
     
  6. Raf77

    Raf77 Senior Member

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    And does manual say if it's 6 months running one shift or 24/7? :D
     
  7. Mehanka Abortmaher

    Mehanka Abortmaher Senior Member

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    @Raf77
    The manufacturer specifies the maximum allowable wear by coating diameter. Diameter control and timely replacement is the responsibility of the user.
    I note that printing the turnover when using mineral (not coated) anti-staining powder erases the dampening shafts of the first section in less than half a year of operation.
     
  8. Raf77

    Raf77 Senior Member

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    Time is least crucial factor
     
  9. Mehanka Abortmaher

    Mehanka Abortmaher Senior Member

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    @Raf77
    After preliminary collection of rubber shaft wear statistics, we use the machine's operating time as the most versatile measurement tool. The shafts are replaced after about 1.5 years. By this time, they will have developed 80-90% of the resource and will not create problems for personnel and quality. Planned replacement will not stop production. In the long run, these are "extra costs" on the one hand and reduced risks on the other hand.
     
  10. Raf77

    Raf77 Senior Member

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    1,5 year running 3 shifts 7 days a week, or one shift 5 days a week??? Is that the same???
     
  11. Mehanka Abortmaher

    Mehanka Abortmaher Senior Member

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    @Raf77
    Do you understand my approach to the issue of shaft replacement? It doesn't matter how and how many prints you make. Collect wear statistics, assign a resource and change shafts according to the assigned resource. Convenient by the impression counter-please, more convenient by time-welcome. Watch on YouTube how sailors maintain equipment and diesel engines on large ships, read the instructions to the repair crews of the British Navy. Apply this knowledge in practice to your equipment.
     
  12. Raf77

    Raf77 Senior Member

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    What do you mean by "shaft"?
    And, following your way of thinking should I replace my car tyres every year, no matter if I've done 1000 or50000 miles on them? Should I replace them due to wear statistics?:D Come on, it's pile of crap.
     
  13. Mehanka Abortmaher

    Mehanka Abortmaher Senior Member

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    @Raf77
    Are you sure you work in the printing industry? Are you sure you're a repair service specialist? Maybe you're a manager with a lot of free time?
    knurled shaft, transfer shaft, submersible shaft. You are definitely far from technical :(
     
  14. Raf77

    Raf77 Senior Member

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    Not as fat as you from basic knowledge. If you was have just a fraction of my experience you wouldn't talk all this crap.
    So you're replacing shafts every 1.5 year? Shafts?:D How often do you replace main motor?:D
    I can't see any point in further discussion with you
     
  15. Mehanka Abortmaher

    Mehanka Abortmaher Senior Member

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    @Raf77
    Since you are experienced, say so bluntly. Why write about car tires and switch to
    implicit insults?
    There is a concept of "company" in the maintenance of marine vessels.
    Printed shafts also have a "company" - a period of time in which rubber-coated shafts in each of the sections are replaced.
    For ~1.5 years, this is the "company" of my Ryobi 524. Accordingly, the replacement of shafts in the section occurs every 4.6 months mathematically or every half a year in fact.
    The main engine, like other electrical machines, is checked for insulation and rotor bearings are replaced every five years.
    Once we got personal and insulted... The specialists who service some types of printing presses in North Yorkshire County are armless freaks.
     
  16. Raf77

    Raf77 Senior Member

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    You tell me that I'm telling about car tyres (Which is great example of rubber wearing) but from other hand you tell me about royal navy vessels:O
    I don't understand what you mean by 'company'
    I presume if you're talking 'shafts' you mean rollers.
    I don't understand that you're replacing rollers every half a year or 1,5 year.

    And I totally agree with you about Yorkshire's specialists (maybe not all of them but many)
     
  17. Mehanka Abortmaher

    Mehanka Abortmaher Senior Member

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    @Raf77
    On car tires there are marks of the residual tread height, according to them the owner determines when the tire is worn to the limit of replacement. If there are no such traces, the owner measures the tread depth with a special measuring tool and decides on replacement by reading the manufacturer's instructions.
    "Company" is the period of nominal work, the term is used to define the time period of equipment maintenance or repair operations. Example: a two-piece printing machine. You have three sets of shafts in two sections. You know that there is a lot of work and stopping the machine to replace one shaft after it fails is not cost-effective. Disassemble both sections at once and send the shafts for repair? This is a big delay if the repair organization does not provide shafts for rent. Without waiting for an accident, you plan to disassemble the section and replace all the rubber shafts with new ones, now you have six months to repair the removed shafts and get ready to replace all the rubber shafts in the second section. The "company" will be for one year. For a four-section machine, the "company" will be two years.
    The shaft is a steel axle with a rubber coating applied. It is used to transfer ink and a moisturizing solution from the consumable containers to the printing plate.
    Indications for replacing a rubber stick: 1) a change in the hardness of the coating 2) a decrease in the outer diameter (for example, minus one millimeter from the nominal value)
     
  18. Raf77

    Raf77 Senior Member

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    I've told about tyres to make you realise that time is least crucial factor in rubber wearing, anyway...

    According to you - if there is 6 months interval for rollers change at each unit, so on 4 colour press it'll be 2 years, and on 10 colour press it'll be 5 years until you change all units and back to no 1. That means rollers life is extended on bigger press and in fact you're replacing the rollers every 5 years on big machine and every year on 2 colour machine. Is that make sense?
     
  19. Mehanka Abortmaher

    Mehanka Abortmaher Senior Member

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    @Raf77
    You recently wrote that you understand. Reading you, I understand that I am throwing beads in front of pigs.
    How many sections do they keep a replacement set of shafts available for? By what criteria should car tires be compared with printing shafts?
     

  20. Raf77

    Raf77 Senior Member

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    By what criteria should Royal Navy ship be compared with printing rollers???
    Read yourself:D
     
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