Now You Know How to Calculate the Overall Machine Efficiency of Apparel Industries

How to Calculate the Overall Equipment/Machine Efficiency (OEE) of Garments Industries
Joyankar Mojumder
Inspector
Modern Testing Services (BD) Ltd.
280, East Narshinghpur, Ashulia, Savar, Dhaka.
Email: mozumderjoy@yahoo.com

What is Overall Equipment/Machine Efficiency (OEE):
OEE is the framework for measuring the efficiency and effectiveness of a process, by breaking it down into three constituent components (Availability, Performance and Quality product rate). It helps to measure a problem so that easily can fix it and provides a standardized method of benchmarking progress. OEE identifies the percentage of planned production time that is truly productive.

OEE is the framework for measuring the efficiency and effectiveness of a process Now You Know How to Calculate the Overall Machine Efficiency of Apparel Industries

Overall machine or equipment efficiency is the how to performs machine versus spec. In practically,

OEE= Availability X Performance Rate X Quality Product Rate

Where,

                      Loading time – Down time
Availability = ………………………………………. X 100
                              Loading time

                         Standard cycle time x Processing quantity
Performance = …………………………………………………. x 100
                                              Operating time

                                     Processing quantity – Defective quantity
Quality product rate = ……………………………………………………………. X 100
                                                   Processing quantity

Let,

Working hours per day: 10 hours x 60 min = 600 min
Shut down (SD): 35 min
Loading time: (600-35) = 565 min
Equipment stoppage/ down time: (30+20+25) = 75

(a) Failure : 30 min
(b) Set up : 20 min
(c) Adjustment : 25 min

Operating time : (565 - 75) = 490 min
Standard Cycle time : 0.35 min/ pieces
Processing quantity : 550 pieces/ day
Defective : 30 pieces.

Now,

                       Loading time – Down time
Availability = ……………………………………………. X 100
                               Loading time

    565 – 75
= ………………….. x 100
       565

= 86.72%

                         Standard cycle time x Processing quantity
Performance = ………………………………………………….. x 100
                                           Operating time

    0.35 x 550
= ……………………. X 100
        490

= 40.35%

                                      Processing quantity – Defective quantity
Quality product rate = ……………………………………………………………………. X 100
                                                 Processing quantity

   550 – 30
= …………….. x 100
     550

= 94.54%

So, OEE = Availability X Performance Rate X Quality Product Rate

= 0.8672 X 0.4035 X 0.9454

= 33.08%

Low Machine efficiency rate due to man: