science

National Lubricating Grease Institute

National Lubricating Grease Institute is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand National Lubricating Grease Institute rather than just read about it. In short: The National Lubricating Grease Institute is an international trade association that serves the grease and gear lubricant industry. It exists to promote research and development of lubrication technology.

Key takeaways

National Lubricating Grease Institute belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect National Lubricating Grease Institute to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of National Lubricating Grease Institute from memory before moving on to harder problems.

Reference excerpt

The National Lubricating Grease Institute is an international trade association that serves the grease and gear lubricant industry. It exists to promote research and development of lubrication technology. It also publishes industry standards for greases.

History The NLGI was incorporated by a small number of U.S. companies in 1933 to create a code for the National Recovery Act. The original name of the organization was the National Association of Lubricating Grease Manufacturers, Inc. The name was changed in 1937 as the industry recognized the need for a joint development and standards association and membership grew. The NLGI is a not-for-profit corporation whose membership includes grease manufacturers and sales organizations, associated equipment manufacturers, industry suppliers, service organizations, research and educational groups. Membership is open to corporations and individuals. According to information posted by the NLGI in 2004, the institute has member organizations in 26 countries, while subscriptions to its journal, the NLGI Spokesman, represent 50 countries.

Standards In cooperation with ASTM International and SAE International, the NLGI has developed the categorisation of lubricating greases specified in standard ASTM D4950 “standard classification and specification for automotive service greases”, reproduced in standard SAE J310 “automotive lubricating greases”. The NLGI retains jurisdiction over the designation and definition of the categories, which it publishes in its “chassis and wheel bearing service classification system”. The NLGI has also created a symbol, the NLGI Certification Mark, which can be used on containers of greases to advertise their ASTM D4950 category. The measure of the consistency of a lubricating grease is commonly expressed by its NLGI consistency number, defined by the NLGI in the “standard classification of lubricating grease”. The NLGI consistency number is used in several standards: ASTM D4950, SAE J310 and ISO 6743-9 “lubricants, industrial oils and related products (class L) — classification — part 9: family X (greases)”. The NLGI also administers a professional certification program. Individuals passing an examination designed to test their knowledge in the field of lubricating grease obtain the Certified Lubricating Grease Specialist (CLGS) certification.

References

External links Official website

Worked examples

Example 1 — a first encounter with National Lubricating Grease Institute

Start with the simplest possible case. Write down what National Lubricating Grease Institute claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to National Lubricating Grease Institute before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about National Lubricating Grease Institute ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of National Lubricating Grease Institute

In research: National Lubricating Grease Institute appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses National Lubricating Grease Institute in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: National Lubricating Grease Institute is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1933 establishments in the United States, Lubricant manufacturers, Organizations established in 1933, so understanding it makes those chapters shorter.
In everyday life: Look for National Lubricating Grease Institute outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study National Lubricating Grease Institute in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what National Lubricating Grease Institute means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain National Lubricating Grease Institute out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is National Lubricating Grease Institute in simple terms?

Why does National Lubricating Grease Institute matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study National Lubricating Grease Institute?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on National Lubricating Grease Institute.