content
Frequently Asked Questions
QWhat is OEE in simple terms for plant managers?
OEE (Overall Equipment Effectiveness) tells you what percentage of your theoretical production capacity you actually used. An OEE of 65% means you used 65% of what was possible — the remaining 35% was lost to downtime, slow running, or defects. World-class OEE is 85%; the average manufacturing plant runs at 60%.
QWhat are the three components of OEE?
OEE is composed of Availability (was the machine running when scheduled?), Performance (was it running at the correct speed?), and Quality (were the parts good on the first pass?). Performance losses — from minor stops and reduced speed — are often the largest OEE loss category at plants without real-time monitoring.
QHow often should OEE be measured?
OEE should be measured by shift at minimum. Monthly OEE reports are history lessons — by the time they are published, the root causes are weeks old. Real-time or hourly OEE monitoring allows managers to respond to performance drops during the shift, not after it.
QCan you improve OEE without buying software?
Yes. Manual OEE measurement using paper downtime logs, part counts, and a spreadsheet will give you a baseline. The key elements are: a defined ideal cycle time, shift-level downtime tracking, and separate counts for good parts and scrap. Manual measurement is a valid starting point, though real-time automated systems provide significantly better visibility into Performance losses.