OEE Lab / Hidden-Factory Loss Calculator

The Hidden Factory

The short, frequent stops your operators never log - quantified. See the units, euros and OEE points your reports can't see. Numbers update as you type.

Your line

One machine or line. Estimate the micro-stops if you don't measure them - most plants undercount.

/hr
Full speed (e.g. 3600/hr ≈ 1 piece/sec).
Short jams, misfeeds, sensor faults.
sec
Typically 10–120 seconds.
Profit per unit (or sale price if you sell all you make).
Operating schedule
Hidden loss - every year
-
Lost to micro-stops nobody logged.
capacity lost5%10%15%20%+
Lost / hour
-
Hidden OEE pts
-
Lost units / yr
-
Lost hours / yr
-

Reality check

Your numbers appear here.

Get the printable loss report for your line

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You can't fix what you can't see.

Micro-stops are too short and too frequent to log by hand - so they stay invisible and keep bleeding. Fabrico reads every stop from the machine and uses computer vision to show the true cause, automatically. That's how the hidden factory becomes a fix list.

See how Fabrico finds the true cause
OEE Lab is built and operated by Fabrico. Our tools stay free either way.

What is the hidden factory?

The hidden factory is the capacity you lose to small, frequent stoppages - micro-stops under about five minutes - and the speed losses around them. Because each one is too short to bother logging, they never reach your OEE or downtime reports. But they add up: 10 stops an hour at 30 seconds each is 5 minutes lost every hour - over 8% of your capacity, invisible.

The math

Annual hidden loss = micro-stops/hr × duration × operating hours/yr, converted to lost units at your ideal rate, then to euros at your margin. The "hidden OEE points" are the share of each hour these stops consume - the performance the machine had but never delivered.

Why don't these show up in our OEE?

OEE only subtracts the downtime you record. Micro-stops are cleared by the operator in seconds and almost never logged individually, so the lost time shows up (if at all) as a vague "performance" gap - not as identified, fixable downtime. Check your OEE here.

Are these numbers realistic?

Micro-stops commonly cause 5–20% performance loss on packaging, filling, assembly and converting lines. The defaults here are deliberately moderate - most plants undercount both the frequency and the duration.

How do you actually find the causes?

You need automatic stop detection (from the PLC) plus a way to see what happened - which is where machine vision comes in. That's exactly what Fabrico does.

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