I've calculated a whole bunch of grease quantities and ideal intervals for our electric motors in a plant environment.  To manage the work load we've fixed our routes to 60 days.

 This is where my question comes in -

 I'm not concerned about adjusting the grease quantity down when the calculation tells me to less often.  Example  - calculation tells me to add 100 grams of grease every 120 days and set our program at 50 grams every 60 days.

 Where I get concerned is when I have to adjust the 60 day quantity up.  Example - calculation tells me to add 50 grams every 30 days so we set the program at 100 grams every 60 days.

I realize that Ultrasonic is the way to do this properly but I'd like to hear some feedback on this case where we have to double our grease addition because the interval is twice what the calculations tell us. 



Original Post

Hi There,

Depending on the calculation used the returned "interval" may be the L10 or L1 life of the grease. This means by going longer than the calculated relive interval, there is a 10% or 1% chance the grease will fail. There are a lot of other factors at play here, and some calculators have a bit more fat built in, i.e some will give an interval of 1/3rd the "grease life". Grease thickener will have an impact also. Most relube calculators will assume a basic lithium soap/mineral oil but modern lith complex, poly-urea etc soaps will last a lot longer.

I will often have 2 grease routes, normal and "short" for equipment that requires more freq greaseing,





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