This new NLGI matter try a way of measuring the fresh new grease’s feel just like the indicated by the their worked entrance value

Choosing the right texture regarding grease for a loan application is a must, while the a fat that’s also softer will get migrate from the room that really must be lubricated, if you find yourself a fat that’s too sturdy might not effortlessly move to the elements that have to be lubricated.

Typically, a grease’s hardness is actually expressed because of the its entrance value and is evaluated utilizing the standardized Federal Lubricating Fat Institute (NLGI) degrees graph.

The brand new penetration attempt strategies how strong a standard cone drops with the an oil sample in the tenths out of millimeters. Per NLGI degrees corresponds to a specific spent some time working entrance value diversity. High entrance values, such as those more 355, indicate a lowered NLGI degrees count. New NLGI level selections off 100 (semi-fluid) so you’re able to six (good stop such as for instance a cheese mozzarella cheese spread).

The base petroleum viscosity therefore the level of thickener considerably influence the latest NLGI degree of the completed lubricating fat. Brand new thickeners when you look at the grease means such an excellent sponge, releasing the newest lubricating water (base petroleum and you may additives) when force is actually used.

The greater the fresh structure, the more resistant this new fat will be to initiating lubricating fluid less than force. An oil with a low structure will launch lubricating fluid alot more conveniently. The proper grease texture is very important to possess ensuring that the correct quantity of lubricating liquid exists and handled on the program for correct oiling.

NLGI Grades 100-0

Greases you to definitely fall into these levels are classified to your water to help you partial-fluid range and are generally reduced viscous as opposed to others. These grades off grease shall be beneficial in shut and centralized software, where oil migration is not problematic. Eg, a buckle field demands a grease within NLGI range so you’re able to continuously renew new lube for the get in touch with zone.

NLGI Levels step 1-step three

A grease which have an enthusiastic NLGI amount of just one possess a reliability such as for instance tomato insert, where a fat having an enthusiastic NLGI values off 3 have a feel more like butter. By far the most widely used greases, such as those utilized in automobile bearings, can use a lube that’s NLGI stages 2, with this new firmness regarding peanut butter. Grades within this range is also operate in a higher heat variety as well as higher speed than simply NLGI levels 100000-0. Greases to possess bearings are typically NLGI grade step one,dos, otherwise step 3.

NLGI Grades cuatro-6

NLGI levels classified in the cuatro-6 diversity enjoys a consistency for example ice-cream, fudge or mozzarella cheese mozzarella cheese. To possess gadgets swinging in the highest speed (higher than 15,000 rotations each and every minute) an enthusiastic NLGI level cuatro grease should be considered. These devices sense a whole lot more friction and heat generate- up, hence a great firmer, channeling grease required. Channeling greases be more without difficulty pushed away from the element because the they rotates, hence resulting in smaller churning much less temperature obtain. Like, Nye’s Rheolube 374C are an enthusiastic NLGI levels 4 oil used in high speed influence software with a wide heat list of -40°C so you’re able to 150°C. Greases which have an NLGI Levels of 5 otherwise six commonly usually utilized in apps.

Need certainly to determine what NLGI degree their oil is? Nye’s NLGI amount suggestions can be found into our very own item’s Tech Analysis Sheet, you can also view the videos observe how to run a penetration Try.

Nicole St. Pierre – Technology Development Director

Nicole St. Pierre could have been with Nye to possess two decades, offering as the Technology Creativity movie director over the past a dozen age and also as a report and you may Advancement chemist just before you to. She focuses on creating customized ingredient packages to have lubrication that can be used in the advanced programs. Nicole already takes care of our browse and creativity Research, where she formulates the newest man-made greases and you can executes technologies to succeed our product lines. Nicole holds a beneficial Bachelor of Research in Chemistry in the School off Massachusetts Dartmouth.