Frequently used in lubricating food machinery. Bentonite clay is treated with a polar activator that will give an electrical charge to the clay particles, thus aligning them to hold the lubricating oil in suspension in a non-soap thickened, grease structure.
Not very compatible with other greases, since the electrical charge may be destroyed and soften the grease beyond performance limits. This type of product is often called a No-Melt grease. Has good water resistance, low temperature pumpability and extremely high temperature applications where a non-melting grease is required, the clay structure can aid in setting up a self-forming oil seal where bearing seals are impossible to maintain such as in wheel bearings on high temperature kiln cars.
Among one of the first types of grease manufactured. Used today largely because they are moderately priced. Manufactured by using hydrated lime and a fatty material.
Step-by-Step Grease Selection
Higher temperatures may alter the grease structure. Has very good water tolerance. Lithium grease has excellent resistance to water and breakdown, or softening, by working. Pumpability is a very strong characteristic for this type of grease. The term Multi-Purpose Grease is used because they combine, in a single product, desirable characteristics normally found in each of several products.
A newer type of grease, showing many of the same characteristics as the simple lithium greases, with improved performance in the area of high temperature, high speed bearing life. A grease of fairly recent development that does not use a conventional soap thickener. Often used in electric motors, alternators and in food machinery. Some Polyurea greases are very shear sensitive, that is, they will soften in dispensing and harden in the bearings.
Lighter consistency greases may give better performance under these conditions. Generally a fibrous textured, stringy grease, that was used as a standard wheel bearing grease for many years.
A low-cost grease that has good rust protection, but very poor water resistance. When two greases are mixed, the resultant mixture often exhibits properties and performance characteristics that are markedly inferior to those of either grease by itself. Therefore, it is wise to exercise caution in switching between types of grease that may have compatibility problems. The system should be cleaned of all previous grease when making a switch between grease types.
If it is impossible to remove previous grease type from the bearings, grease more frequently until all traces of previous grease have been flushed out of the bearing. It is our recommendation not to mix greases with different families of thickeners. Bentone Clay Grease Bentonite clay is treated with a polar activator that will give an electrical charge to the clay particles, thus aligning them to hold the lubricating oil in suspension in a non-soap thickened, grease structure.
Calcium Grease Among one of the first types of grease manufactured.
What You Need To Know About Grease
Lithium Complex Grease A newer type of grease, showing many of the same characteristics as the simple lithium greases, with improved performance in the area of high temperature, high speed bearing life. Polyurea Grease A grease of fairly recent development that does not use a conventional soap thickener.Sure, this giant tub of grease looks cool, but will it work for everything?
In short, no. It will do the job for all chassis and wheel bearings though. No, not the stuff left over in the pan after broiling some burgers, real grease, the kind that makes your car do the things it needs to do. There are so many types of automotive grease, it can be a little confusing when looking at the lubricant aisle at the local NAPA store.
Before we get into all that, how about a little background on grease. Lubricating grease is an interesting product, the basic components are mineral or vegetable oil mixed with soap. Yep, soap. The oil gets mixed with the soap and whipped up into an emulsification, creating the semi-solid we call grease.
General purpose grease is designed to work in a variety of applications, but that does not mean it is not specific, either. Some general purpose greases are made for specific vehicle brands. With so many options, understanding your needs is important when selecting grease. The most commonly used types of grease in the automotive world is multi-purpose.
The main use for this stuff is chassis componentswhere heat is not an issue. This type of grease is typically made from Calcium sulfonate. These have a high resistance to water, but do not fare well under high heat application, such as wheel bearings. DO NOT use multi-purpose grease for wheel bearings or other high-heat applications. General purpose grease is useful for everything that does not require a specialty grease. This white general purpose grease is commonly used in household applications for door hinges, drawer slides, etc.
It is stable up to degrees and often used for CV joints. Lithium greas e is made from lithium soap, which is the salt from fatty acids, it is a non-detergent soap that yields a stable, non-corrosive grease. White lithium grease is available in an aerosol can or a tube. It works great for hinges and metal-on-metal moving parts. For high-temperature components, such as wheel bearings, a high-temperature silicone-based grease is required.
These greases are designed to hold stable under high temps and against the elements commonly seen in wheel bearings. You can use this grease for chassis components as well, but chassis grease is not interchangeable.
For wheel bearings, you need a high-temp grease. Ford grease is a general purpose grease that is fortified with molybdenum disulfide for higher-pressure protection and anti-wear for disc brake wheel bearings. It is suitable for all chassis lubrication. Boats and boat trailers need grease too, but their grease needs to be suitable for heavy water use.Grease has several uses on a motorcycle.
It's there to protect parts from water, to keep rubber and plastic seals from drying out, and to provide lubrication. Generally speaking, grease is just a reduced fat. In fact, you can find several companies who call their grease bases "soap. The choice for a general purpose grease to protect from water, keep seals moist, and provide lubrication is easy.
This stuff can handle temperatures higher and lower than you'll ever get near. A one pound jar should last you about 15 years. There are two types of maintenance you must do on a shaft drive bike.
At your rear wheel there are pinion gears where the spinning drive shaft motion is turned 90 degrees into the rear wheel motion. These gears are bathed in oil which much be changed after break in, and about every 10, miles thereafter. Honda says this gets done the first time at 12, miles.
Don't believe it. Do it at about 1, and when you see what comes out you'll decide to do it again in about miles to flush the rest of the garbage out. Also, a shaft drive bike will have splines on each end of the drive shaft, and on a large ring which transmits the power to the rear wheel.
These splines must be lubricated. This is a rather tricky subject, as the lubrication requirements of splines are very different from gears or bearings. Put the bike on the center stand. Place a large flat metal pan under the real wheel, like a cookie sheet. This process is a bit messy. Remove the 17mm bolt on the bottom of the rear wheel hub. Next, remove the inspection plug, 17mm large bolt at the rear of the hub. If your drain plug is magnetic, make sure to clean it completely.
Replace the drain plug. To fill, get 70 or 80 weight gear oil, and put it into the inspection hole until it comes back out. You may as well buy good synthetic oil, a quart is good for 5 changes.
You need to grease your drive splines each time you change your rear tire. This is true for all shaft drive bikes, regardless of brand. This is a real issue: ask any BMW rider, or any old-time ST or GL high mileage type, and you'll likely get a whole lecture about spline maintenance. The lecture may or may not be informed, but it will demonstrate real concern.
The drive splines get surprisingly hot.Does anyone have any suggestions on the best grease for gears inside gearboxes? If the white grease sounds familiar to you could you please tell me the name. Also, keep in mind that no substance can leak from the robot at any time, especially onto the playing surface.
This is a definet NO-NO. To build on this question, what kind of lubricants are teams using for open gearboxes? Ive looked at some dry teflon lubricants, but i was just wondering what other teams use. I tried searching but could only find that team used teflon impregnation for their gearboxes. I recently packed the wheel bearings in one of my vehicles with some Coastal brand EP grease containing Moly.
It seemed like a really nice grease. We use White Lithium grease in all of our transmissions. For other locations axle bushings, lazy susans, etc we use spray graphite. Our typical procedure for brand new gearboxes particularly for the drive train are to build and grease them, then run them under no load to break them in.
We stick an ammeter to them every few minutes and stop running them when the current seems to have stopped declining. Then we take them apart, wipe out the grease which normally has steel dust in itand re-grease them. We typically have no reason to take them apart ever again. The green stuff is probably an extreme-pressure grease, similar to Esso Unirex N. By contrast, white lithium grease which I recommend tends to have the consistency of yogurt at room temperature, but feels more like soft margarine.
That works well in open gearboxes, but can splash a little if you overdo it, so be sure to run the gearbox for a while before putting it on the carpet, so as to get rid of the excess lubricant.
I once had a gearbox that sounded awful, and was clearly binding. I put it on a power supply, and the meter showed the one CIM was drawing about 8 amps with no load on the gearbox. So, I took some car polishing compound I had on hand, squirted some in the gears, ran it for a few minutes adding a little more compound periodically, and watched the current draw drop to about 2.
Cleaned it out, greased it up, and it was good go. A mildly abrasive compound seemed to really break it in quite nicely. Just toss a few of these in your next AM order. Grease to go! One thing we have used in open gearboxes that are already on the robot at competition is Loctite silicone spray lubricant.
Carl up there can attest to its effectiveness. Thank you all for your replies. The description of white lithium grease sounds pretty accurate. I took the advice on breaking in the gear boxes and I had some team members take care of that yesterday. I thought about getting the grease packets from AndyMark but they seemed really expensive.
Not to mention the grease seems to be extremely viscous. As a matter of fact I plan to get some today.While lubrication is not the sole answer to all mechanical problems, the simpler the application of lubricant becomes, the greater the chance of an uninterrupted and smooth running operation. As a result, grease-based open gear lubricants were developed several years ago to meet the demanding service requirements of mining and mine-related equipment.
In addition, the more recent environmental and waste disposal needs of users and government legislation fostered wide spread acceptance of this type of lubricant within the mining communities.
Tackiness — the lubricant must be tacky in order to cling to the gear teeth. It must not be wiped or squeezed off by the meshing teeth, washed off by rain or flung off centrifugally. It should remain adequately pliable within the temperature range of the application.
The lubricant should be adhesive lubricant sticking to the gear surface and cohesive lubricant sticking to itself. For optimum coverage, the lubricant must have a balance between adhesion to the gear tooth surface and cohesion such that strings of the lubricant continually replenish the film as the meshing teeth part. Load carrying capability — because the large, slow-moving open gears are usually heavily loaded, the lubricant must have good Extreme Pressure and anti-wear properties as there are impact, sliding and rolling forces exerted on the gear teeth throughout the mesh process.
In this way, the lubricant reduces both wear and friction on the gear teeth and results in lower energy consumption. Protection — the lubricant must protect the gears primarily against rust and corrosion as well as lubricate them under a variety of unfavorable situations, such as dirty or dusty conditions.
It must endure wide temperature variations. Cushioning capability — the lubricant must reduce vibration between the gear teeth and consequently reduce noise during operation. Lubricants possessing these characteristics provide a persistent lubricating film on the gear teeth that protects against wear and permit; long periods between lubricant applications.
In the case of a solvent-free grease based product, a reduction in the base fluid viscosity is unavoidable and is required to maintain the sprayability and pumpability of the product, especially at lower temperatures. As a result, it is important with a solvent-free grease based product to consider the requirements for developing an adequate lubricant film on the surface of the gear under the severe operating conditions in mining operations. ISO Viscosity Grades and higher are preferred for grease based products thickened with aluminum, lithium, calcium complex soaps as well as clay and polyurea.
This would ensure that the lubricant adhered to the gear surface at higher temperatures but was also pumpable at low application temperatures, i. Grease-Type Open Gear Lubricants. Categories Mining Technical Reports. In general, the multi-service lubricant must have the following features: Tackiness — the lubricant must be tacky in order to cling to the gear teeth.
Sprayable — such that application of the lubricant would be facilitated. Related posts.Tool Talk.
Shop Now. View Cart. Allis Chalmers. Farmall IH. Ford 9N,2N,8N. John Deere. Massey Ferguson. Grease for power tool gear boxes. View previous topic :: View next topic. Sorry posted on wrong board first. Does anyone know a source and kind of grease to use in the gear box on a grinder, drill ect. I would like to change the grease in the box off a Ryobi planer.
Ryobi was not very helpful. Must get the gear box from another source. Any help would be appreciated. Thank you. Back to top. I once bought some from Milwaukee but found that it is similar to corn head grease and have used that. I bought a tube from Sears a while long while back, the part number is I was hoping it had some type of description on the box I could provide.
However, the only thing it says is "scientifically compounded for portable electric tools". Seems to be good stuff. I like Napa's lithium greasekind of a clear to tan color soft grease.If so, what would happen? Polyurea-thickened greases are most often discussed in terms of bearing applications because this encompasses the majority of their usage. Electric motors in particular tend to be exclusively lubricated with polyurea-thickened grease.
It is important to keep in mind that grease is made up of three main components: the base oil, the thickener and additives. 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. However, simply referring to a grease by its thickener type does not provide enough information as to its true performance characteristics. The term "multi-purpose" is quite popular for greases on the market and usually relates to some common additives and the viscosity of the base oil.
Many of these grease types have extreme-pressure EP additives and a base oil viscosity of centistokes cSt. The scale ranges fromwhich is very thin or almost fluid-like, to 6, which is very hard or a solid block. While grease thickened with polyurea is not disqualified from working in a gearbox, some of these other parameters may prevent it from being the best option.
The majority of gearboxes tend to be highly loaded and as such require a lot from the lubricant to protect the machine's internal surfaces. In this case, you must make certain that the grease's viscosity is in line with what the gearbox needs to be properly lubricated, as you do not want the viscosity to be too low to build a lubricating film.
The other issue to be aware of involves the extreme-pressure additives. These additives can be chemically aggressive and lead to chemical corrosion on machine surfaces.
This is most prevalent in equipment parts with softer metals. So, while polyurea greases are commonly used for bearing lubrication, there is nothing preventing them from lubricating gears. The biggest concern when selecting a lubricating grease is ensuring that all the other components of the grease are aligned with the machine's requirements. Once these are balanced, you can rest assured that you have selected the optimum lubricant for the application.
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Tips for Monitoring Gearbox Oil. Guidelines for Selecting Gearbox Oil. Guidelines for Determining the Cause of Gear Failures. Featured Whitepapers. How to Cost Justify a Lubrication Program. Airborne Ultrasound: Find-and-Fix Leaks. Strategies for Removing Water from Specialized Lubricants. Buyer's Guide. Oil Filtration. Lubricant Storage and Handling.