worn-in

English translation: broken-in

18:55 Nov 26, 2008

English language (monolingual) [PRO]
Tech/Engineering - Mechanics / Mech Engineering

English term or phrase: worn-in

Here is the sentence:

"New gears or gears that have been realined should be thoroughly **worn** in at low power before being subjected to the maximum tooth pressure of full power."

I somehow understand what **worn-in** means, but I need help from you, technically savvy, as to how you rephrase it. Is **warm up" close or I am off the mark?

TIA

humbird

Selected answer:broken-in

Explanation:
Wearing-in is the same as breaking-in the new gears.
It is not warming up, much more than that. It is allowing the gears to go through minor adjustments in reaction to each other.
Here is one description: www.4x4now.com/gt0999.htm

All new cars (or gearboxes) need breaking-in, and the handbooks always provide appropriate instructions for the particular model.

--------------------------------------------------
Note added at 4 hrs (2008-11-26 23:08:59 GMT)
--------------------------------------------------

the cam and distributor gear should be broken-in by this suggested time. ... www.gilbertautoparts.com/Distributors_And_Parts/93440806ins...
New Engine Break-in Procedure
www.ntnoa.org/enginebreakin.htm
High rates occur early in the cycle, during the run-in (break-in) stage of engine and gear systems. archives.sensorsmag.com/articles/1001/30/main.shtml
After the engine broken in, you can thoroughly flush... www.sallee-chevrolet.com/ChevySmallBlockV8s/SalleeZZ430HP.h...
...at 18 mpg city for a well broken in engine
www.allpar.com/model/jeep/grand-cherokee-review.html
As the engine gets 'broken in,' the rough edges from the manufacturing process...
www.autotropolis.com/wiki/index.php?title=Breaking_in_a_new...
Marine engine not broken in yet
www.rcgroups.com/forums/showthread.php?t=902767
Most engines will be broken-in after running for some time, but some ways of breaking-in an engine are far superior to others as they are more likely to ... www.thedieselstop.com/contents/getitems.php3?Breaking in a ...
Suzuki...When an engine is broken in, these four processes occur:...
www.gsxr.com/showthread.php?t=51349
Racing engine break-in procedure stockcarracing.automotive.com/49424/scrp-0701-rawww.supernissans.net/forums/2007-2008-nissancing-engine-break-in/index.html
Porsche.... your engine should be completely broken in, and oil consumption should be ...
books.google.co.uk/books?isbn=0760310874...
Being new, perhaps the gearing, prop shaft, etc. is not broken in... www.boatbanter.com/showthread.php?t=98173

And so on and so forth, ad infinitum

Selected response from:

juvera
Local time: 23:41

Grading comment

Since I am looking for a short phrase, this comes most handy. Also convincing is many web site citings. Yes many people around here in the American west breaking horses, but sure enough engines are broken in and become docile too.
4 KudoZ points were awarded for this answer

SUMMARY OF ALL EXPLANATIONS PROVIDED

4 +6

run till gears are smoother and mesh together easily

Jack Doughty

5 +2

run in

Gary D

broken-in

juvera

Discussion entries: 3

Answers

10 mins confidence:

peer agreement (net): +6

run till gears are smoother and mesh together easily

Explanation:
The gears need to be run at low power for a while, so that they act on each other to smooth out any surface roughness and become better aligned with each other. If subjected to full power without this, it might damage them.

No, not "warm up".

Jack Doughty
United Kingdom
Local time: 23:41
Native speaker of: English
PRO pts in category: 143

25 mins confidence:

broken-in

juvera
Local time: 23:41
Native speaker of:

Hungarian
PRO pts in category: 29

Grading comment

3 hrs confidence:

peer agreement (net): +2

run in

Explanation:
When gears etc wear in, the engine, gears have reached working temp and cooled down a few times so the gears pistons etc have been stressed and then set into their best position. Machining marks etc are worn off enabling smoother quieter freer running
worn in" and "run in" are the correct wordings for this.

BUT
"Run in" is a bit more up to date as it is suggesting a normal process where "worn" suggests failing.

Example sentences:
"The engine has been run in"
"The gears have been run in"
I am taking the car for a drive as the engine needs to be run in. (engine needs running in)
The gearbox is a bit noisy, but it will quieten down once it is run in

--------------------------------------------------
Note added at 12 hrs (2008-11-27 07:08:42 GMT) Post-grading
--------------------------------------------------

Breaking in must only be an American term as I have never heard it used like this before and I have been in the automotive field for 35 years. Breaking and worn to me sound like a failing term, wear it out and drive it until it breaks.

Gary D
Local time: 08:41
Specializes in field
Native speaker of:

English
PRO pts in category: 28

Login or register (free and only takes a few minutes) to participate in this question.

You will also have access to many other tools and opportunities designed for those who have language-related jobs (or are passionate about them). Participation is free and the site has a strict confidentiality policy.

Return to KudoZ list

KudoZ™ translation help

The KudoZ network provides a framework for translators and others to assist each other with translations or explanations of terms and short phrases.

See also:

ProZ.com term search

Search millions of term translations

worn-in

English translation: broken-in

Answers

KudoZ™ translation help

Your current localization setting

Select a language

worn-in

English translation: broken-in

Answers

KudoZ™ translation help

You have native languages that can be verified

Your current localization setting

Select a language