Industrial engineering formula

Overall Equipment Effectiveness (OEE) formula

The product of availability, performance and quality. It shows how much of planned time produced good output at ideal speed.

Formula

\text{OEE} = A \times P \times Q

Symbol	Meaning	Unit
A	Availability: run time / planned production time	-
P	Performance: (ideal cycle time × total count) / run time	-
Q	Quality: good count / total count	-

When to use it

Use it for machine-paced processes such as knitting, cutting machines, automatic sewing units, printing and embroidery machines.

Worked example#

Planned time 480 min, 48 min of stops, ideal cycle 30 s, 720 pieces made, 684 good.

A = 432 / 480 = 0.90
P = (30 × 720) / (432 × 60) = 0.833
Q = 684 / 720 = 0.95
OEE = 0.90 × 0.833 × 0.95 = 71.3%

Where this formula is explained

Industrial EngineeringGuide3 min read

OEE in Garment Manufacturing: Availability, Performance, Quality

Overall Equipment Effectiveness (OEE) splits losses into availability, performance and quality. How to calculate it for sewing, cutting and knitting machines, a worked example, and why OEE and line efficiency tell you different things.