Finish Line Teflon Synthetic Grease

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The fact that many manufacturers don’t state greases attributes is not my fault. How else can one rate various greases? Do a personal lab test for each? Usual characteristics” in the heading is written because various manufacturers (and concrete grease models) use various ingredient qualities, so final product characteristics may vary. Concrete characteristics a finished grease possesses is usually written on the label, either in the form of a marketing slogan, or (more reliably) by noting DIN and/or ISO standard that a grease complies with. Characteristics like lowest and highest use temperature, water washout resistance etc. The resulting polymer is terminated with sulfate ester groups, which can be hydrolyzed to give OH end-groups. [17] In my city, temperatures rarely go below -20, mostly stay up to -10 in the coldest of months, but as far as salt protection goes (our road companies don’t spare on the salt as soon as there’s any snow), Lithium soap based grease seems to work fine – I also ride all year long.

There are thousands of different products – article was aimed at providing some guidelines, with “rule of thumb” properties. Motul and Mobile, to name a few, make some exceptional quality greases (and sell them at premium/higher prices).

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Many soft metals, like copper, silver, gold, zinc, lead etc. have low shear resistance and can be used as a lubricant, put in a thin layer over sliding hard surfaces. Soft metal films are useful for tempereatures up to 1000°C, but are less often used nowadays. I’ve also explained what the minimum requirements are, how to read and compare characteristics of a particular product.

Table 6 gives a comparative overview of some commonly used solid lubricants. As can be seen, MoS 2satisfies most criteria and that is why it’s most commonly used, often as an additive to greases. Table 6 Fact: Lithium grease is one of the cheapest greases on the market and is by far inferior to nearly all polyurea greases in all aspects besides price.”Bottom line, for reasons noted in this reply, as well as in the post, NLGI 2 is “the sweet spot” of grease consistency in my opinion and experience. Those who think differently can choose for themselves. Since you mention science all the time (though this goes under engeneering IMO), I’m open to any comparative tests and results. My data comes from primitive non-scientific experience of hundreds of serviced bearings and seeing how they fare after a year (or two-three for “lazy” customers) has passed, as well as lots of books read and experts consulted. And I’ll repeat – if you see any errors, bad info, please correct – I’m grateful for any imput to improve the data. Mobil 1 worked well enough for about fifteen years, but is very stiff for most bike bearings. Zero corrosion but may be bearings were stainless anyhow; it displayed very little separation unlike other greases. you wrote something above. That nlgi 1 doesn’t hold bearings well enough. Are you referring to loose bearings? because in newer years there are no loose bearings anymore and the cage their in hold themin place.

Friction differences at bicycle bearing speeds and loads between molybdenum additive grease and an “ordinary” one are negligible. Molybdenum as an additive has its place, but this is not it. Soap greases. Soaps are usually made by saponification of fatty acids with hydroxides of various metals – aluminium, calcium,sodium, barium. For pressing in the bearings (not for lubrication of moving parts), I prefer (and recommend) using some kind of anti-seize, not grease. Because it provides long(er) term protection from seizing (corrosion), helping both with mounting and dismounting. Grease can be relied upon for only up to one year, if not even shorter period, for anti-seize protection. Products sold as “copper grease” are quite good for that task.

\n\t\t\tHalfords Teflon Grease, 125ml

PTFE is a thermoplastic polymer, which is a white solid at room temperature, with a density of about 2200kg/m 3 and a melting point of 600K (327°C; 620°F). [20] It maintains high strength, toughness and self-lubrication at low temperatures down to 5K (−268.15°C; −450.67°F), and good flexibility at temperatures above 194K (−79°C; −110°F). [21] PTFE gains its properties from the aggregate effect of carbon-fluorine bonds, as do all fluorocarbons. The only chemicals known to affect these carbon-fluorine bonds are highly reactive metals like the alkali metals, and at higher temperatures also such metals as aluminium and magnesium, and fluorinating agents such as xenon difluoride and cobalt(III) fluoride. [22] At temperatures above 650–700°C (1,200–1,290°F) PTFE undergoes depolymerization. [23] Property

Molybdenum disulfide (MoS 2). Like graphite, has low friction coefficient,but doesn’t need to absorb moisture to achieve it (moisture with MoS 2can even somewhat increase friction). Has higher load bearing capabilities than graphite. In environment with oxygen, it can be used for temperatures under 400°C, while in a non-oxidant environment it is stable up to 1100°C. As far as I know, those are decent-quality calcium-based greases, that are softer than NLGI2 hardness, not aggressive on plastics, rubber or metal.With 20-20 hindsight, I think Marine grease would have been excellent for that application, and annual servicing as well. Like many others, I replaced those bearings with a Cane Creek 110 sealed bearing system, BUT, those have much less engagement area, 8-10mm vs ~30mm with the original press-in. As you might expect, and Chris King and others have been very vocal about, in time the small engagement area results in the slow, steady peening of the aluminum bearing face inside the headset. My RX for AmsOil’s Off-Road grease is for stopping the creaking that has resulted by resisting Pound-Out so it continues to take up the tiny space peening has created. Of interest to you, that grease has Moly in it, although Moly isn’t really meant as a lube, it’s meant to fill in the pores of hot metal to create a less toothy surface so the oil film can work better at any speed and load. Criterion 3 – Good resistance to water wash out and to water and dirt contamination. Per standard ISO6743-9 at least level E, or better of water resistance. Bicycle bearings are usually not submerged into water, nor is water sprayed on them under pressure. That is why they don’t require water protection levels as some other bearings, e.g. boat trailer wheel bearings. Besides, open grease shelf life is about 5-7 years, closed new lid can be safe to use for about 10. After that, they might degrade – drying out, or base oil separating. If riding environment has lots of rains and/or sea water, good choice is calcium (soap based) grease (or “marine” grease). Available, cheap, with good water resistance. The only situations where this grease is not a very good choice are extreme heats (bike left for hoursin over +35 °C summer sun), or riding in very low temperatures (below -15°C).