grease

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grease,

mixture of lubricant and thickener. It is used to reduce friction between surfaces from which oils would leak away or cause damage by dripping, or where lubrication must be assured for extended periods. Many greases are mixtures of mineral oil and soap. The more common of them contain a calcium-base soap that withstands water but not high temperature, or a sodium-base soap that withstands higher temperatures and adheres well but dissolves in water. Other soaps used in greases have bases of lithium, aluminum, barium, or strontium. Nonsoap thickeners include carbon black, which is unaffected by temperature and is therefore used with extreme low-temperature lubricants; silica gel; and bentonite, a clay developed for universal greases. Solid lubricants are sometimes used for extreme bearing pressures and high temperatures. Synthetic oils are sometimes used for special conditions, generally temperature extremes.

grease

[grēs]
(materials)
Rendered, inedible animal fat that is soft at room temperature and is obtained from lard, tallow, bone, raw animal fat, and other waste products.
A lubricant in the form of a solid to semisolid dispersion of a thickening agent in a fluid lubricant, such as petroleum oil thickened with metallic soap.

grease

1. any thick fatty oil, esp one used as a lubricant for machinery, etc.
2. Vet science inflammation of the skin of horses around the fetlocks, usually covered with an oily secretion
References in periodicals archive ?
5% volume share of the overall industrial greases market, followed by North America and Europe, by 2015 end.
By using the right grease and ensuring electric motors are cared for and well maintained, companies using Mobil-branded greases to protect their electric motors can reduce downtime, cut repair costs and increase productivity.
China, as the exclusive distributor of the Grease Thief sampling and testing technology products for China, Macau and Hong Kong.
Continuous technological improvements and innovative solutions in industrial greases will attract business from new industry sectors," said Frost & Sullivan Chemicals, Materials & Food Industry Analyst Anna Jarosik.
Any discussion of lubrication inevitably leads to a comparison between oil and grease lubricants, and a discussion of the pros and cons of each type.
Especially formulated to stay in place even with high-pressure equipment wash-down, the new grease outperformed other greases in ASTM D tests for water spray-off, wear and corrosion.
The G-0100 multipurpose motor bearing grease is a mineral oil-based grease thickened by a urea system.
To keep these pollutants out of the waters below dams, Utility Service Associates developed and markets a food-grade canola-based grease called Cor-Tek VSG that is biodegradable and free of heavy metals, and, Brown says, that outperforms petroleum greases.
Due to their thinner viscosity, greases of NLGI grades 000 and 00 have a higher oil content, which actually does the lubricating in a grease mixture.
While, nearly every machine shop greases its chucks regularly, very often the basics of chuck lubrication are misunderstood.
Most materials, including lubricating greases, gradually deteriorate with time.