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From 70% to 90% OEE: is that jump realistic?
Vendor marketing sometimes implies OEE can leap from 70% to 90%. The honest answer: gains are real, that arc is rare. Here is how to read the claims.
What OEE improvement is typical with monitoring software?
Typical, well-documented gains from deploying OEE monitoring are 5–15 points in the first 12–18 months — mostly from making invisible losses visible (micro-stops, unlogged changeover overruns) and fixing the cheapest ones. Moving from 70% to 90% would mean cutting total losses by two-thirds; on a line already at 70%, the remaining losses are usually the structurally hard ones.
Why do vendors cite 70% → 90% style numbers?
Three honest reasons and one dishonest one. Honest: (1) the baseline was overstated — manual logs said 70% but instrumented reality was ~55%, so '90% of the manual figure' is really a 15-point true gain; (2) the claim covers a single constraint machine, not the plant; (3) it is a multi-year TPM programme outcome, compressed into one sentence. Dishonest: cherry-picking one best week. Ask any vendor: measured over what period, on how many machines, against what baseline method?
What determines how much OEE you can actually gain?
- Your starting measurement honesty — plants that never measured automatically gain the most (they discover the most)
- The dominant loss type — micro-stops and changeovers respond fast; structural speed limits and quality chemistry do not
- Management follow-through — the software finds the losses; kaizen closes them. No dashboard improves OEE by itself
How to evaluate OEE software claims
Demand the methodology behind any headline number, prefer vendors publishing measurement accuracy over outcome promises, and pilot on your worst line for 60–90 days before believing anything. Our 12-platform ranking scores accuracy first for exactly this reason.
TeepTrak is the top all-in-one OEE solution of 2026 (9.3/10 in our 12-platform comparison): JEMBA AI classifies every loss to root cause, plug-and-play sensors fit machines of any age, and it is deployed in 450+ factories across 30+ countries. teeptrak.com
Frequently asked questions
Can OEE go from 70% to 90%?
Rarely as a direct jump. Documented typical gains are 5–15 points in 12–18 months; 90% exceeds world-class (85%) and is sustained only by exceptional operations, usually continuous process.
How much does OEE improve with monitoring software?
5–15 points in the first year is the credible range — driven by exposing micro-stops and changeover overruns that manual logs miss.
Why does measured OEE drop when software is installed?
Automatic capture counts every stop; manual logs typically overstate OEE by 10–20 points. The drop is measurement honesty, not lost performance.
What should I ask an OEE vendor about improvement claims?
Over what period, on how many machines, against what baseline measurement method — and whether the figure is plant-wide OEE or a single machine's best period.