Recent Topics
Denso Oil filter - outsourced / quality changed
by 92saturnsl2
Today at 02:37 PM
Bench Drill Press
by Propflux01
Today at 02:30 PM
IAT Sensor
by artbuc
Today at 02:26 PM
2013 Nissan Rogue, 5,100 miles, Supertech Conv
by TheOilWizard
Today at 01:46 PM
NC License Plates
by Zee09
Today at 01:31 PM
BITOG Hotline!
by Duffyjr
Today at 01:30 PM
Switching Additives: Flush/Rinse?
by Phishin
Today at 12:46 PM
increasing viscosity
by VQLT
Today at 12:31 PM
Who's up on their metallurgy?
by earlyre
Today at 11:56 AM
Replaced halogen headlight with LED
by gman2304
Today at 11:18 AM
Web Archive
by Duffyjr
Today at 10:25 AM
Sonoma This weekend!
by racin4ds
Today at 10:22 AM
low water pressure on new kitchen faucet
by Joe1
Today at 09:40 AM
Flashing third tail light
by Brigadier
Today at 08:59 AM
Intermittent AC Cooling
by Gebo
Today at 08:59 AM
Who includes full size spare in tire rotation?
by Parlay_Slow
Today at 08:45 AM
Crude and foul behavior
by mjoekingz28
Today at 08:31 AM
Best Off The Shelf Car Wash Liquid ?
by ChrisD46
Today at 08:30 AM
Wrecking Yards
by Snagglefoot
Today at 08:26 AM
F1 - 2018 French Grand Prix
by gofast182
Today at 08:14 AM
Newest Members
Fatbrowndog0822, DRNJR, ZEK, Dudewayne, kmdz
65294 Registered Users
Who's Online
86 registered (Astro14, Atesz792, Al, Auae85, andyd, 11 invisible), 1570 Guests and 34 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
65294 Members
67 Forums
285781 Topics
4769443 Posts

Max Online: 3590 @ 01/24/17 08:07 PM
Donate to BITOG
Topic Options
#4534000 - 10/04/17 04:07 PM Importance or significance of load wear index?
Cgates Offline


Registered: 09/04/17
Posts: 18
Loc: CA
As the title says, i am wondering what the importance and or significance of the load wear index is when looking at grease info.

Some products list this figure in their data sheets and some do not.

Any insights would be appreciated!

Top
#4534453 - 10/05/17 09:47 AM Re: Importance or significance of load wear index? [Re: Cgates]
MotoTribologist Offline


Registered: 02/03/16
Posts: 562
Loc: NJ, USA
It is mostly related to extreme pressure(EP) protection and the last non-seizure load(LNSL). The higher the EP weld load and the LNSL is the higher the load wear index(LWI) will generally be. LNSL and LWI should pretty much always correlate when comparing similar products (as in if a product has a better LNSL, it should also have a better LWI)

So it will indicate the protection and it does relate to relatively low loads as well, but the biggest contributor is where the LNSL is, in my experience.

It is a pretty good indicator or performance over a wide range though and a product that has a higher LWI should offer better protection in variable load applications 9 times out of 10.

Top
#4541604 - 10/12/17 08:55 PM Re: Importance or significance of load wear index? [Re: Cgates]
Cgates Offline


Registered: 09/04/17
Posts: 18
Loc: CA
Excellent info

So are all three values always reported if the astm 2596 testing is done? (LNSL, LWI, and weld point)

For example, on some grease product sheets i see a weld point value and a load wear index value bit not a LNSL value. I assume the manufacturer would, in a case like that, have the LNSL figure but just didnt include it on a data sheet.

Top