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Enter one shift on one machine – shift length, breaks, downtime, ideal cycle time, pieces made and rejects – and see availability, performance, quality, OEE and utilisation instantly, with the biggest loss to fix first. Free, no sign-up, nothing is stored.
Planned production time = shift length – planned breaks. Run time = planned production time – downtime.
A full worked example for a CNC machine, the six big losses and the common mistakes are explained in our guide: How to calculate OEE. To capture OEE automatically from production entries and machines, see machine data and OEE in the ERP and Tejaxo Automation. Also try our free FIFO, LIFO and weighted average stock valuation calculator and corrugated box calculator and reorder point and EOQ calculator.
OEE = Availability x Performance x Quality. Availability is run time divided by planned production time, performance is ideal cycle time x total count divided by run time, and quality is good count divided by total count.
Around 85% is often quoted as world class for discrete manufacturing, but most plants start lower. Track the trend for each machine and fix the lowest of the three factors first.
The ideal cycle time entered is slower than the machine really runs. Use the best rate the machine has actually achieved.
Utilisation shows how much of the shift the machine ran. OEE shows how much of the planned time produced good parts at full speed, so it also counts slow running and rejects.
Yes. In Tejaxo ERP, OEE is captured from production entries with downtime and rejection reasons, and CNC / VMC machines can send cycle counts, run and idle time straight into the ERP.
See OEE, downtime by reason and rejections in Tejaxo ERP – from production entries or straight from your machines.
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