Can you mix lithium and polyurea grease. If you mix them together, it is likely for each .

Can you mix lithium and polyurea grease. Please note that I am speaking about homokinetic ball joints, which really need the lithium based grease with Moly. However, simply referring to a grease by its thickener type does not provide enough information as to its true performance characteristics. Since then, many efforts A significant portion of grease lubrication failures can be attributed to mixing greases in a system without taking into consideration compatibility. Increased Risk of Contamination: Each time a grease is handled or transferred, there's a risk of contamination. High viscosity index PAO with polyurea thickeners in grease compositions. This incompatibility can cause hardening or softening of the grease. One checklist I saw said polyurea conventional is not compatible but shear table version is. Perhaps one of the most common inadvertent mixing of greases occurs when a Lithium Complex grease, commonly specified or used as a factory fill in bearings in fans and pumps, meets up with a Polyurea grease, often used in electric motors. a lithium complex or calcium complex. Introducing a different grease can bring in contaminants that can cause wear or damage. This will lower the quality and performance of the grease. Polyurea Thickeners were first introduced in 1954. You also rarely know if old grease you might be mixing new grease with is actually contaminated with grease that is not mutually compatible. If you mix them together, it is likely for each Dec 13, 2019 · In this study, lithium complex grease (LCG) and polyurea grease (PUG) were synthesized using mineral oil (500SN) and polyalphaolefin (PAO40) as base oil, adsorbed onto lithium complex soap and polyurea as thickeners, respectively. Consequently it is recommended that before changing a system to one of the Mobil SHC Polyrex greases, it should be thoroughly cleaned out to achieve the maximum Aug 1, 2000 · Approximately 90% of all rolling bearings are lubricated with grease; the remainder are oil-lubricated. Oct 25, 2019 · Clay based grease was not particularly good when mixed with Lithium and Calcium soap-based greases. Feb 15, 2024 · So, when it comes to using grease in a high-temperature environment, the first decision you have to make is to be sure you choose correctly between a simple lithium or calcium grease vs. Mobil Polyrex EM greases have been shown to be compatible with a number of ExxonMobil lithium complex greases, as well as competitive electric motor mineral polyurea products, as determined by the methodology of ASTM D6185. This classification includes diurea, tetraurea, urea-urethane and others. In this blog post, we’ll dive into the world of greases, explore the key differences between moly and lithium-based products, and provide information on whether you can mix these two greases without risking damage to your machinery. You won't have a problem. Apr 20, 2023 · What’s Polyurea Grease? Polyurea Grease is a premium first-class multipurpose, high temperature, extreme pressure grease. Are there any advantages or disadvantages to using a polyurea grease over a lithium-complex grease if all the other factors are equal?" When comparing a polyurea grease to a lithium-complex grease, the biggest drawback is that polyurea thickeners are quite incompatible. Polyurea grease composition. Apr 20, 2023 · Lubricating grease compatibility is crucial in industrial and automotive applications because mixing incompatible greases can lead to numerous problems affecting equipment performance, reliability, and lifespan. Conventional polyurea based grease is not compatible with lithium complex grease. The GKN, GM and Ford prefer polyurea hi-temp grease without Moly. There are many types of grease, but can you mix grease? For example, you might have heard molybdenum or marine grease is better May 31, 2005 · I got a tube of John Deere polyurea grease, part #TY6341, for greasing control arm ball joints. Most greases in North America are lithium soap or lithium complex. Different thickener systems can react with each other to modify the physical and chemical structure resulting in the inability to hold or release the base oil. In a few instances, the mixed grease can harden. Patent 5 238 589, Aug. See full list on machinerylubrication. Both lithium and calcium greases are compatible with each other and other standard grease lubricants. " Mar 5, 2019 · We don’t typically see too much grease on modern vehicles, but only because it’s hidden inside maintenance-free replace-it-when-it-breaks components. Mixing regular grease with marine grease is likely to result in the separation of additives and base oil. e. Polyurea Grease: Advantages: <p>In this study, lithium complex grease (LCG) and polyurea grease (PUG) were synthesized using mineral oil (500SN) and polyalphaolefin (PAO40) as base oil, adsorbed onto lithium complex soap and polyurea as thickeners, respectively. 2014. Polyurea Grease: Durability and Performance Polyurea grease has become popular in all industries for its outstanding characteristics. 1993. Lubr Sci 22(9): 405–413 (2010) Article Google Scholar Apr 19, 2018 · From what I’ve been reading, the Lucas X-tra is a “shear stable” polyurea grease and is compatible with lithium complex grease. When it comes to choosing a grease for your applications, you may be wondering what the difference is between polyurea grease and lithium grease. Greases based on simple lithium soaps (lithium stearate or lithium 12-hydroxystearate) and lithium complex soaps (containing simple soap and a complexing agent, such as lithium azelate) may or may not be compatible with polyurea greases. For instance, most car components use lithium-based grease, and if, for any reason, you want to use your vehicle for offroading, switching from lithium-based to calcium marine grease will be beneficial. It is quite easy for a plant where strict guidance is not given or May 14, 2007 · A polyurea is normally used on motor bearings. Q: Can I mix lithium grease with regular grease? The general rule with all greases is – don’t mix, but you can change if necessary. The Glow Diffusion (Italian manufacturer of CVJ) prefers lithium-based grease without Moly. Application Considerations: While Mobil SHC Polyrex Series greases are compatible with many Polyurea and lithium complex greases, admixture may detract from their performance. Mar 24, 2006 · Due to different compounds in the variety of brands available, it is not advisable to mix different types of grease. For specific questions about grease compatibility, contact your Mobil representative. I used a lithium/moly type grease on them previously. 7. Dec 1, 2020 · When using preformed thickener to make polyurea grease, manufacturers can simply mix the thickener powder with base oil and additives to form a grease that can then be blended with more base oil to the desired consistency, explained Liwen Wei, president and chief technical officer of Novitas Chem Solutions, during NLGI’s Virtual Technical Is the JD polyurea grease compatible with lithium greases? I only have the top of the line JD Polyurea (not much more than the others) and purchased a chipper that made a comment about polyurea and lithium greases incompatibilitu. However, the procedure you are looking for is to inject whatever grease you are going to use, until all the old grease (lets say brown) comes out, and keep injecting until you see your new grease, say, Chevron, EP #2, (purple), ooz out at the contact areas. The end result Jul 18, 2022 · Incompatible grease mixing can result in motor bearing failures. Since there are no metallic elements in polyurea grease, the grease is ashless and subsequently more oxidatively stable. Lithium complex greases and polyurea-thickened greases both have dropping points of approximately 500°F or higher. In the intrest of carrying one grease type, would there be the concerns of using a polyurea based grease in a traditionaly lithium / lithium complex grease location. Aug 19, 2022 · No. You did NOT mix lithium with polyurea. Overall there is a trend toward more high-performing grease thicken-ers, including complexes and non-soap thickeners. The remainder 10% is sponge which holds the oil in suspension for use when pressure calls for its need. The resulting grease carries unknown performance characteristics (load, temperature stability, shear, etc. 1) SKF high performance, high temperature bearing grease LGHP 2 is not a common polyurea type grease. Polyurea is the thickener portion of the grease and can affect some of the finished lubricant's functional properties, such as the dropping point, consistency and water-wash resistance. I'd like to be able to say that I knew a lot about grease -- you know, stick the grease tube in the grease gun, connect Sep 17, 2019 · The grease industry is being challenged by the recent increase in price and competition among users of lithium hydroxide, driven by the growing demand for lithium used in batteries for mobile electronics and electric vehicles. Lithium grease and moly grease have different additives and ingredients. Popular thickeners include polyurea, aluminum complexes, and calcium, sodium, and lithium soaps. Jul 1, 2011 · Ok, searched all the old grease threads, heres a question I haven't seen answered yet. Mixed with a lithium or lithium complex it will more than likely cause a change in viscosity, and degrade the lithium based grease's reversability. location in mind is the Variable speed pulley on my 1460. The soap structure is broken down and the greases are not miscible. The CV Joints tripod type generally needs another grease. Normally a synthetic base, long laster. Calcium sulfonate greases are incompatible with bentonite clay grease, polyurea-based grease, and calcium complex grease. With exceptional Feb 3, 2020 · If that is the case, you need to determine where it was used and use the same (type, polyurea of whatever brand is handy) on those area(s), OR completely clean that grease out if you want to start using the same standard (any brand) lithium complex #2 grease on *everything*. It is a di-urea bearing grease, which has successfully been tested for compatibility with lithium and lithium complex thickened greases i. Now I find that there's a difference between "shear stable" polyurea grease and "conventional" polyurea grease, where the shear stable type is compatible with lithium grease and the other type isn't. Here are several reasons why lubricating grease compatibility is of paramount importance: 1. Feel free to contact us if you Jun 4, 2002 · You can generally mix any lithium complex based wheel bearing grease without a problem. Dec 16, 2005 · I have the black molybdenum grease , and the red shell wheel bearing thick grease, can I mix them or just get a new cartridge of the black lithium grease. It is specially formulated to offer the extreme lubrication requirements of long service applications such as electric powered motor bearing. based on polyurea compounds and clays. Mixing greases in a system can cause issues with thickener systems reacting with each other. Aug 7, 2022 · For example, white lithium grease is not compatible with marine grease. Jan 19, 2011 · Each grease that was tested proved to be incompatible with at least one other grease. This is especially dangerous because softened grease can run out of a bearing. If you can't get the old grease out of a fitting, then put in enough new grease to push out as much of the old stuff as you can. It also is used lots in sealed bearing housings. U. On older vehicles, aftermarket parts, farm equipment and other gear, you’ll find grease fittings everywhere. Mar 3, 2019 · The general rule is not to mix grease, but that doesn’t mean you can’t switch to another grease if your use demands it. For example, a race car will need a different type of wheel-bearing grease than the 2015 Nissan Altima you use for your daily commute. I'm not sure I would trust data from Grainger. Because of this challenge, the decision to use a new grease in a machine must be managed with grease compatibility in mind. The issue of grease compatibility has now become more complex than ever with the introduction of complex soaps,polyurea, calcium sulfonate and even more exotic thickeners used in many greases. It is a lithium complex grease. Compatibility testing includes heating and holding grease for a specified time at assumed operating temperature for mixtures of 10:90, 50:50 and 90:10. What Do You Use Marine Grease For? Mar 3, 2023 · Polyurea Grease Vs Lithium. In recent years, concerns about the long-term availability of lithium, the most commonly used grease thicken-er, has driven a search for alternatives. . A simple lithium grease maxes its dropping point out at 374 degrees F. The lithium battery industry increas- Aug 25, 2015 · While some lithium complex and polyurea greases are indeed compatible, it's difficult to know which ones are for sure without a compatibility test. Due to grease’s fundamental properties, it can be difficult to remove all of the old grease before introducing new grease to a machine in the same manner that oil can be drained from a machine to add new oil. Which type of grease is better? Apr 10, 2024 · Greases are the unsung heroes of machinery maintenance as they provide crucial lubrication to ensure smooth operation and longevity. That Lucas grease is a shear stable polyurea. For a lithium complex grease, a typical score on this test may be around 30. The table below shows how a particular grease color may refer to several different types of grease, especially among lithium-complex greases. Polyurea greases are the most popular non-soap grease today. This can cause leakage and bearing failure; We can help with miscibility tests ahead of product changes to avoid problems in advance. 6. This is why you should stick with a particular type of grease. The effects of grease formulation (thickener and base oil with different amounts (80, 85, and 90 wt%) on the corrosion resistance and lubrication function were Your statement (I have heard others say that you should never mix marine grease with general purpose grease, but mixing different brands of marine grease wont hurt. This has contributed to a decrease in simple lithium grease production. What Grease Color Can Tell You. S. com Feb 29, 2024 · On the flip side, shear-stable polyurea grease (which is different from conventional polyurea) is compatible with just everything; Lithium Complex grease, the most popular choice in the marketplace, plays well with everything except Clay (Bentonite Clay), Barium Complex, and conventional Polyurea Lithium thickened, mineral oil-based greases are versatile and compatible with most materials, making them a popular choice for general-purpose lubrication. A lubricating grease is produced by suspending a mineral oil or synthetic oil in a thickener, which carries the oil within a network of fibers. Two prominent types of greases, Polyurea and Lithium, stand out with their distinct and exceptional properties. Liu L, Sun H W. Sep 1, 2019 · Typically it is fine to mix lithium complex, lithium soap, and anhydrous calcium greases. ) sums up the way I have used grease all of my life. Moly grease is not compatible with lithium grease, so you should never mix them together. LGHP 2 is compatible with such greases. Being raised around all kinds of… view full answer Jul 1, 2023 · If you don't know what kind of grease you're replacing, try to clean out the old grease, if possible. Caution should be used when mixing clay, aluminum complex, calcium sulfonate, and sodium greases with other grease types. Aug 1, 2023 · The physicochemical properties, rheological behaviors and tribological properties of the grease were analyzed, and the results were compared with those of lithium grease (LG) and polyurea grease (PG) commonly used in the market. Impact of polyurea structure on grease properties. Polyurea grease is an example of this as two polyurea grease formulations in specific cases may not be compatible with each other. Changeover Precautions. If greases of different thickener types (both of which meet the performance requirements of the specification) get mixed in service, dire consequences can result. The type of grease you need will depend on the type of application and performance. Key applications include: that can be reached in an electric motor bearing, a grease with a high dropping point is frequently desirable. The grease mix hardens, which can be devastating in, say, a central lubrication system; The grease mix softens. You will find the information you need about the kind of base used in your grease somewhere on the label or packaging. Dec 1, 2019 · In this study, lithium complex grease (LCG) and polyurea grease (PUG) were synthesized using mineral oil (500SN) and polyalphaolefin (PAO40) as base oil, adsorbed onto lithium complex soap and May 24, 2016 · The decrease in yield stress in the presence of water for lithium grease is therefore likely due to a reduction in interactive forces between fibers caused by water absorption, giving rise to a less stable network. Jul 11, 2021 · Polyurea and shear stable polyurea are not the same. " One take away that's interesting from the blurb above is sounds like lithium greases CAN be made more waterproof and more corrosion resistant, but that Mar 18, 2020 · The ratios of the ingredients will determine the characteristics of the thickener. If it’s a Grade 2 grease, it may have started with a thickness score of, say, 280 (putting it in the middle of the range for a Grade 2 grease). Just my opinion. This can change the physical and chemical structure of the grease, causing an inability to hold or release the base oil. Maintain Lubrication Effectiveness: Aug 13, 2009 · Can you mix lucas red and tacky with the extra heavy duty lucas green grease ? I mixed Polyurea with Lithium Grease JWC86; Mar 9, 2024; Grease; Replies 11 Views 5K. I dont quit get the difference between the white wheel bearing grease the marine boat trailer bearing grease ,and the hi temp wheel bearing grease amber in color , maybe some one can give me Sep 26, 2023 · Mixing them can result in a product with unpredictable and undesired viscosity, which can affect the lubricating performance. The grease is then inspected for visual abnormalities and can be tested for penetration and four-ball wear change. The effects of grease formulation (thickener and base oil with different amounts (80, 85, and 90 wt%) on the corrosion resistance and lubrication function were grease thins out less over time exposed to long-term stress, and that's what you're aiming for. Patent 8 772 210, Jul. The color of grease can also provide some indication of its overall quality—not that red grease is always higher quality than black grease, but if your grease that May 20, 2019 · A calcium-sulfonate grease can also be applied in more types of industries compared to lithium-complex greases, thus making it the preferred choice for a high-performance multi-purpose grease. If you have been applying one of them to an area and you want to switch to the other, you have to clean off the old grease first. Nov 5, 2020 · Baum M W. The yield stress of the studied polyurea grease exhibited a contradictory behavior in the presence of water. May 14, 2007 · "To add to the confusion, there are some grease specifications that are based solely on grease performance without regard to grease composition. After 100,000 strokes, the Feb 25, 2021 · There are more types of grease in this world than you can shake a stick at. Looking at Lucas products, I think the Red-“N”-Tacky might be a better choice. Both types of grease have their own advantages and disadvantages that you should consider before making a decision. Today, with not only the aforementioned thickeners – but also complex soaps, polyurea, calcium sulfonate and even more exotic thickeners used in many greases – the issue of compatibility has become much more complicated…To add to the confusion, there are some grease specifications that are based solely on grease performance without regard Apr 17, 2018 · But mixing the wrong greases together can lead to catastrophic failure. Where is it absolutely necessary to change the grease type used, there are some precautions that should be taken to minimize the risk of potential incompatibility. However, you should use a marine grease, rather than a general purpose GL-2 lube in boat trailer bearings because the marine stuff has better corrosion inhibitors and generally a higher drop out point. Usually, substantial softening occurred when greases were incompatible. Lithium Grease In some cases, the thickener bleeds excessively, releasing large amounts of the vital oil and additives, which leaves behind mostly thickener. Most automotive components are lubricated with lithium grease, but if you use your 4X4 or AWD mainly for off-roading, switching to a calcium marine grease might be beneficial. Calcium-based greases offer improved water resistance but may react unfavorably with certain additives. Most difficult to use in mixtures were aluminum complex, calcium complex, clay, and polyurea thickened greases. ). Pratt S, Fliss E A. 1295/1297 4051 1498/1499 1298/1299 4622 5180/5182 4070/4071 4072 Jun 20, 2023 · One question that often arises is whether moly grease and lithium grease are compatible. These most obvious signs of incompatibility of the “soap” or non-soap thickener have driven an oversimplification of the approach to grease mixing. • Shear Stability: ASTM D 217 Cone Penetration of Lubricating Grease test measures the consistency of the Apr 30, 2016 · Grease is composed of 80 to 90% oil; we are lubricating with oil, just as tho you were oiling the bearing with an oil can. dnfqyh bnfrl geh ujdwzff jwwa bqdvvo hst veuegt rae grkbjgha