Comments on: What Should Be Your Target OEE?

By: Arno Koch

Arno Koch — Mon, 27 May 2024 13:51:17 +0000

Thank you Christof for highlighting some of te recurring points around OEE. Perhaps it is worth while to mention the OEE Academy site (https://oee.academy) that contains tons of such questions and examples around OEE. It also contains the OEE Industry Standard as an aid while defining the OEE parameters (https://oee.academy/oee-standard/).

Just one remark: In my experience it is really not a good idea to use OEE for comparing or benchmarking machines. See here why:
https://oee.academy/oee-academy/oee-and-continuous-improvement/compare-machines-by-oee/
https://oee.academy/oee-academy/oee-and-continuous-improvement/how-to-compare-oees-of-machines/

By: Anne Meesters

Anne Meesters — Wed, 23 Aug 2023 05:44:35 +0000

This is an interesting article, thank you!

By: Martti Hakulinen

Martti Hakulinen — Thu, 06 Oct 2022 11:37:40 +0000

The OEE really depends on the theoretical time that the process is available. If one calculate the OEE per shift its for example 8 hours, the OEE normally gets rather high. If you use 24/7 as the theoretical time then the OEE gets low. For example if the process runs in thre shifts Monday to Friday the maximum OEE you can reach is 5/7*100 = 71 %. A normal “OEE” of 70 % during the 5 days will result in an OEE of 49%.

By: Jan

Jan — Wed, 28 Sep 2022 15:04:32 +0000

I know a company that has a fix target % for OEE regardless of the lotsize. Fix change-over cycle times can not be crushed due to compliance/technical reasons. It surprises me that they have in reality variable lot sizes, depending on the output of the previous input, and still rely heavily on the actual vs target for this measure.

By: James

James — Wed, 28 Sep 2022 05:11:38 +0000

OEE is TAKT Time / CT in short. That is it. What we produce is not good part but goods for exchange. Only goods can be exchanged is good part.

By: Mariusz Mark Forkun

Mariusz Mark Forkun — Tue, 27 Sep 2022 22:02:33 +0000

one thing is to ensure TPM is within the available time, as good practice to reduce TPM time through kaizen. similar arguments for SMED.

By: Steve Milner

Steve Milner — Tue, 27 Sep 2022 13:24:13 +0000

Half a century or so ago my first Supervisory job was running a fishcake line. Daily performance was calculated on our ‘Efficiency Reports’ which effectively used the same equation, although we used Availability x Utilisation x Quality. Years later I heard the tern OEE which included ‘Performance’ – thank goodness you use ‘Speed’! I still prefer Utilisation: our lead machine was set at 240 packs per minute, but the crew couldn’t fill every slot for very long, so we were not -in theory- fully utilising the equipment.
On a monthly basis we received material yield costings. Product weight was also important: lightweights were illegal, so our target weight was something like nominal + 3SD. We lost the odd lightweight. It would have been easy to increase weights and avoid lightweights, therefore upping the ‘OEE’ – but to the detriment of our costs …and of course we’re in business to make money, not win prizes for best OEE.
When the UK joined the EEC lightweights became legal – we just had to demonstrate that average weights were in spec. 2oz fishcakes also became 50g. Kerching! £££!