Every machine arrives with a number on its spec sheet: it can make X units per hour. Finance plans around it, sales quotes against it, and then reality delivers something noticeably smaller. The gap between that headline figure, nameplate capacity, and what your factory actually produces is one of the most expensive blind spots in manufacturing, because decisions get made on a number that was never achievable in your plant.
The spec sheet sells the maximum; OEE reveals what your line truly delivers.
Nameplate (theoretical) capacity — the maximum the manufacturer says the equipment can produce, under perfect, continuous, defect-free conditions.
Demonstrated capacity — the best sustained output you have actually achieved on your floor, with your products and people.
Real (effective) capacity — what you reliably produce day to day, after the normal losses of running a real operation.
Trouble starts when people plan with the first number while living with the third.
Nameplate capacity assumes conditions that never persist: no breakdowns, no changeovers, no minor stops, no slow running, no defects. Your real output is nameplate minus exactly the losses OEE measures, availability, performance and quality losses. In fact, real capacity is essentially nameplate capacity multiplied by OEE. A line rated for 1,000 units a shift running at 65% OEE has a real capacity nearer 650. The "missing" 350 is not a mystery; it is your loss profile.
Over-promising. Quoting lead times against nameplate capacity sets you up to miss them.
Unnecessary capex. Buying a new machine to add capacity you already have, trapped in losses.
Hidden upside. The gap is also opportunity, the hidden factory of capacity you can recover without spending a cent on equipment.
You cannot plan honestly without measuring it. That means capturing actual output and losses over a representative period rather than trusting the spec sheet, basing rates on demonstrated ideal cycle time rather than nameplate, and understanding where time goes via the OEE time model. Capacity that is never measured stays as dark data, and you keep planning on fiction.
Fabrico captures real output, speed and losses in real time, so you can see demonstrated and effective capacity rather than relying on the nameplate number, and quantify exactly how much capacity is locked in losses. That turns capacity planning from optimistic guesswork into evidence, and often shows you can meet demand by recovering hidden capacity instead of buying more machines.
The theoretical maximum output a manufacturer states for a machine, assuming perfect, continuous, defect-free operation, conditions that rarely hold in practice.
Real (effective) capacity is approximately nameplate capacity multiplied by OEE, because OEE captures exactly the availability, performance and quality losses that reduce theoretical output to actual.
Planning on nameplate capacity leads to missed promises and unnecessary equipment purchases, while the gap itself is recoverable hidden capacity.
Plan on real capacity, not the spec sheet. See how Fabrico measures your true, demonstrated capacity and the losses hiding the rest. Book a demo today.
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