Lube-Tips - Stored Oil vs. in-Service Oil Life

8/13/2019 Lube-Tips - Stored Oil vs. in-Service Oil Life

1/4

Lube-Tips - Stored Oil vs. In-service Oil Life1 mensaje

Mario Valencia

Lube-Tips Newsletter 1 de agosto de 2007 10:18Responder a: Lube-Tips Newsletter Para: "[email protected]"

Table of Contents

Breathers - Let's Seal the Deal Synthetic Lubricants and Gearboxes Name This Additive Stored Oil vs. In-service Oil Life

Today's Tip: Breathers - Let's Seal the Deal

Keeping water out of oil seems to be a never-ending battle. Water maywell be the No. 1 contaminant, reducing RTF (run to failure) time by afactor of ten. Breathers with threads may allow water to wick its waydown the threads, contaminating the lubricant.

Other forms of contamination such as rust and wear particles candevelop around the threads. Air gaps between the threads form a hiding

place where rust can develop. Overtightening, with a wrench may stopwater ingression, but can cause pieces of thread to spall off and fall intothe lubricant.

Placing a small amount of thread sealant on all breathers using pipethreads will greatly reduce this risk. Thread sealant will fill the air gaps,lubricate the threads, and seal out the water. (Garry L. Sands, LubeTech, Tembec Inc.)

We send $100 for each tip published. Submit your tip.

iCan- The Next Generation of Fluid Handling More Features Less Money Smart Choice

Come see us at www.intelligentcan.com

Store Fluids Safely - Identify Fluids Clearly -Dispense Fluids Cleanly

Book Bits: Synthetic Lubricants and Gearboxes

Pgina 1 de 4Gmail - Lube-Tips - Stored Oil vs. In-service Oil Life

09-11-2009http://mail.google.com/mail/?ui=2&ik=b5e07584e8&view=pt&search=starred&th=1142...


2/4

From the "Lubrication Excellence 2007 Conference Proceedings":

A coal fired power plant operating in the western U.S. was experiencingshort life in their bronze-on-steel gearbox used for pulverizing coal. TheAGMA 6EP (ISO 320) gear oil recommended by the OEM failed to

provide adequate lubrication and protection based on oil analysisresults and gearbox inspection after one year of operation. This wasconfirmed by excessive wear metals and lower viscosity in the used oilreports. Further analyses of the used EP gear oil indicated excessivebuildup of particulate contaminants in the lubricant and depletion of theEP additive package. A chain reaction of excessive wear was takingplace.

Replacing the AGMA 6EP gear oil with a synthetic AGMA 7 R&O gearoil and installing a custom-tailored oil filtration system significantlyreduced the wear metals and practically eliminated the wear chainreaction.

More information about the "Lubrication Excellence 2007 ConferenceProceedings".

An Inside Look at Reliability at ToyotaJoin this panel discussion where Toyota leaders willshare thier views and insights on reliability and leanmanufacturing at Lean Tools for Maintenance andReliability in Cleveland, Ohio, October 1-3, 2007.

www.Lean2007.com

Lube Trivia: Name This Additive

Test your knowledge and prepare for ICMLlubrication and oil analysiscertification.

Question: What is a common additive found in SAE 0W-30 motor oil butnot found in SAE 30 motor oil?

Get the answer.

Q & A: Stored Oil vs. In-service Oil Life

"I heard that oil has a shelf life of one to two years, but oil in service canlast for several years. How is this?"

What you have alluded to is true. Oils do have a fairly short shelf lifecompared to the length of time they can last in service, if properlymaintained.

The issue here is additive solvency as it is commonly referred to.Chemically speaking, "additive solvency" is a bit of a misnomer, asmany additives are mixed or suspended, rather than dissolved in thebase oil. When the lubricant is stored for an extended time, theadditives can settle out. This is particularly true of lubricants that have




3/4

high additive treat rates, and leaving such oils sitting for extendedperiods can leave a thick sludge at the bottom of a drum. The problemis exacerbated by base stocks with a high nonpolar content, given thatmany additives are polar in nature.

Using the oil effectively keeps the additives well mixed. If you can limitparticulate and moisture contamination to the minimum you will avoid

particle scrubbing, water washing and other destructive depletionreactions. As a result, your oil will likely last for a substantially longertime than its shelf life.

Ashley Mayer, Noria Corporation

Submit a question| Discuss on Message Boards

Noria Training Calendar

September 2007

Machinery Lubrication10-12 Nancy, France - Effective Contamination Control11-13 Point Lisas, Trinidad - Best Practices for Machinery Lubrication18-19 Santa Cruz, Bolivia - Machinery Lubrication I18-20 Galveston, TX - Machinery Lubrication II19-21 Sao Paulo, Brazil - Effective Contamination Control25-27 Sydney, NSW - Machinery Lubrication Level I25-28 Monterrey, Mexico - Todo sobre la Lubricacin de la Maquinaria26-29 Roma, Italy - Effective Contamination Control

Oil Analysis3-4 Lyon, France - Oil Analysis I5-6 Lyon, France - Oil Analysis II10-11 Angoulme, France - Oil Analysis I

11-13 Gdansk, Poland - Oil Analysis - The Complete Course12-13 Angoulme, France - Oil Analysis II13-14 Sao Paulo, Brazil - Oil Analysis II25-27 Buenos Aires, Argentina - Oil Analysis II

Reliability18-19 Galveston, TX - Strategic Plant Reliability Management

Entire Training Calendar| Courses| Online Training Courses

Lube-Tipsis published bi-weekly by:Noria Corporation, 1328 E. 43rd Ct., Tulsa, OK 74105USA.

(918) 749-1400

Because results will vary widely based on a number offactors, Noria Corporation cannot warrant the results ofany information within this e-mail.

2007 Noria Corporation

Receive your own subscription to Lube-Tips

Lube-Tips Home Lube-Tips Archives Machinery Lubrication Magazine

Practicing Oil Analysis Magazine Reliable Plant Magazine Bookstore Buyers Guide Dictionary




4/4

This email is being sent to [email protected] this link to be deleted or to update your email address


09 11 2009http://mail google com/mail/?ui=2&ik=b5e07584e8&view=pt&search=starred&th=1142

Lube-Tips - Stored Oil vs. in-Service Oil Life

Documents

Transcript of Lube-Tips - Stored Oil vs. in-Service Oil Life