The brand new NLGI number are a way of measuring the latest grease’s consistency as the indicated from the the did entrance worthy of

Selecting the most appropriate surface of grease to own an application is essential, as a grease which is also mellow get move of the area that really must be lubricated, when you are a fat that’s too firm might not effectively move towards the components that need to be lubricated.

Typically, an effective grease’s hardness is actually shown of the the penetration worthy of which is examined with the standard National Lubricating Grease Institute (NLGI) stages graph.

The entrance shot tips exactly how deep an elementary cone drops on an oil take to about tenths from millimeters. For each and every NLGI amounts corresponds to a certain did penetration well worth diversity. High entrance viewpoints, such as those more than 355, suggest a lower life expectancy NLGI values number. The fresh new NLGI size range away from 100000 (semi-fluid) to six (good stop such as for instance a parmesan cheese cheese pass on).

The base oils viscosity plus the quantity of thickener significantly determine new NLGI amounts of the finished lubricating fat. The thickeners from inside the fat form including good sponge, releasing this new lubricating fluid (base oil and you will chemicals) whenever push is actually used.

The greater the brand new structure, the more unwilling brand new fat would be to opening lubricating fluid around force. A grease having a reduced surface will discharge lubricating water even more readily. The best oil surface is very important to possess making certain appropriate level of lubricating water is offered and you can managed in the program to possess right oiling.

NLGI Levels 100000-0

Greases you to belong to these grades is classified towards water to partial-fluid diversity as they are less viscous than others. These levels off grease are useful in enclosed and central applications, in which grease migration is not problems. Particularly, a gear box need a grease within this NLGI assortment so you’re able to continuously replace the latest lubricant into get in touch with area.

NLGI Grades 1-step three

A grease having an enthusiastic NLGI level of just one enjoys a consistency including tomato paste, in which an oil with an enthusiastic NLGI degree off 3 possess a beneficial consistency a lot more like butter. One particular widely used greases, such as those utilized in automotive bearings, might use a lube which is NLGI values dos, which includes the latest stiffness away from peanut butter. Levels contained in this diversity can work in a top heat range and at high rate than NLGI levels 100-0. Greases for bearings are generally NLGI level 1,dos, or 3.

NLGI Levels 4-6

NLGI levels categorized on the cuatro-six assortment keeps a reliability such ice-cream, fudge or cheddar cheddar. Getting products moving during the high performance (greater than 15,100 rotations per minute) a keen NLGI grade cuatro oil should be considered. These devices feel a whole lot more friction and heat build- right up, therefore good firmer, channeling grease is required. Channeling greases are more effortlessly pressed out of the ability because they rotates, ergo leading to reduced churning much less temperatures obtain. Including, Nye’s Rheolube 374C is an enthusiastic NLGI values 4 fat found in high-speed results programs that have a wide temperature range of -40°C so you’re able to 150°C. Greases that have an enthusiastic NLGI Levels of five or 6 commonly normally lovestruck included in programs.

Need to figure out what NLGI levels your own grease is? Nye’s NLGI degree advice can be found on our very own product’s Technical Studies Layer, or you can check out all of our clips observe simple tips to run an entrance Try.

Nicole St. Pierre – Technology Advancement Director

Nicole St. Pierre has been with Nye having two decades, offering as Tech Development movie director over the past a dozen ages so when a research and you will Creativity chemist ahead of you to. She focuses on creating individualized additive packages to possess lubricants which can be taken inside the complex applications. Nicole already manages the research and you will invention Laboratory, where she formulates the newest man-made greases and you will implements technology to succeed all of our product lines. Nicole retains an effective Bachelor out-of Research when you look at the Biochemistry from the University out of Massachusetts Dartmouth.