Table of Contents
How do you test grease quality?
The following methods represent the most important ways to analyze lubricating grease. Atomic Emission Spectroscopy. Particle Quantifier Index. Fourier Transform Infrared Spectroscopy. Karl Fischer Titration. Bleeding Test. Penetration Test. Sulfate Ash. Shear Stress, Visible Viscosity.
What is the highest quality grease?
We have chosen the top three greases from the current market to help you select the right product. Valvoline SynPower Synthetic Automotive Grease. This grease is composed of a lithium-based complex thickened in oil, along with premium grade additives. Lucas Oil 10301 Heavy Duty Grease. Maxima 80916 Waterproof Grease.
Does the color of grease mean anything?
One thing we are sure of, however – color does not denote a particular type of grease, whether it is red, green, blue or yellow. The color is simply a dye added by manufacturers for marketing purposes, to more easily distinguish the different greases in their product lines.
What are the different grades of grease?
Greases are classified into nine consistency grades (000, 00, 0, 1, 2, 3, 4, 5, 6) established by the National Lubrication and Grease Institute (NLGI).
What is drop point of grease?
The dropping point of a grease is the temperature at which it passes from a semi-solid to a liquid state. The dropping point test determines the cohesiveness of the oil and thickener of a grease. The dropping point of a grease is the temperature at which it passes from a semi-solid to a liquid state.
Can be used to detect the presence of oil or grease?
Oils and greases on component surfaces be detected and identified by infrared spectroscopy. Trace levels of these organics can be extracted using an Accelerated Solvent Extractor (ASE) or Soxhlet extraction and identified by gas chromatography-mass spectrometry.
Does lithium grease damage rubber?
Is white lithium grease suitable for rubber? White lithium grease, good for rubber. Silicone grease is safe for rubber and also helps keep it soft. All other mineral oil-based greases degrade natural rubber.
What’s the difference between lithium grease and regular grease?
The main difference that exists between standard lubricating grease and lithium grease is that standard grease is often used in industrial settings and lithium grease is primarily used in domestic settings.
Is white lithium grease the same as WD 40?
White lithium grease automotive uses The WD-40 Specialist High-Performance White Lithium Grease spray is designed for automotive maintenance needs and is ideal for metal to metal lubrication. White lithium grease is used to keep components moving smoothly, free of friction and seizing.
What type of grease is gray?
Gray or black greases generally contain molybdenum disulfide (moly)/graphite for use under severe operating conditions. You might think that vibrant colors would indicate their, use, such as red for high temperatures or blues cold temperatures, but unfortunately, that is not the case.
What is the difference between white grease and black grease?
The Effect of Color on Lubricating Grease To be more specific on colors, white greases are indicative of greases for food machinery, while black greases are moly/graphite greases for severe operating conditions. Below are some interesting results regarding the effects of color on grease properties.
Can you mix black and red grease?
Don’t Mix Grease, but Change If Needed The key is to make the switch as close to 100 percent as possible. If you can, start with completely clean parts and new grease. Otherwise, greasing more often will flush out the old incompatible grease faster. Still, some joints will not flush, which could be risky.
What is NLGI grade for grease?
The NLGI consistency number (sometimes called “NLGI grade”) expresses a measure of the relative hardness of a grease used for lubrication, as specified by the standard classification of lubricating grease established by the National Lubricating Grease Institute (NLGI).
What is general purpose grease?
What is General Purpose Grease? It is grease manufactured to medium consistency with a medium viscosity base oil and medium wear, washout and oxidation resistance properties. Essentially, it is a product designed to fit the largest possible cross-section of grease lubricated components in an operation.
What is the difference between NLGI 1 and NLGI 2 grease?
There are two basic types of grease for most equipment and machinery applications: NLGI #1 grease and NLGI #2 grease. So what’s the difference? Less thickener makes a #1 grease more tractable and slippery, while #2 grease has more thickener, making it stiffer and great for all-purpose applications.
Why do we use grease?
The function of grease is to remain in contact with and lubricate moving surfaces without leaking out under the force of gravity, centrifugal action or being squeezed out under pressure. Its major practical requirement is that it retains its properties under shear forces at all temperatures it experiences during use.
What are the components of grease?
Greases are manufactured by combining three essential components: base oil, thickener, and additives.
What is viscosity of grease?
Viscosity is a measure of the internal friction of a fluid. It is the most important physical property of a fluid in the context of lubrication. The viscosity of a lubricant varies with temperature and pressure and, in some cases, with the rate at which it is sheared.
Which instrument is used to remove oil and grease?
API Separators: API or American Petroleum Institute Separators are normally the first and most important step in a refineries wastewater treatment. It uses the differences in oil and water’s specific gravity to filter out the majority of free oil within the mixture.
What is oil and grease?
Oil and grease refers to a combination of substances that do not readily mix with water and are commonly used in industry and daily activities. Examples include motor oils, lubricating oils, fuels, animal fats like bacon grease, and cooking oils.
What are the methods available to remove oil and grease from water?
Promising physico-chemical processes for oil-water separation include granular C adsorption, powdered C adsorption followed by polyelectrolyte coagulation and final polishing, and powdered C adsorption followed by direct filtration. Greater than 99% oil removal can be achieved with these processes.
