Royal Manufacturing - Industrial Greases and Lubrication

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ROYAL
Tulsa Plant
516 S. 25th West Ave.
Tulsa, OK 74127 USA
918.584.2671 918.592.6472
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Schertz Plant
(San Antonio Metro)
9998 Doerr Lane
Schertz, TX 78154 USA
210.651.7322 210.651.7405
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Glossary

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SAE An abbreviation for “Society of Automotive Engineers,” an organization serving the automotive industry.

SAE Numbers Numbers applied to motor, transmission and rear axle lubricants to indicate their viscosity range.

Saybolt Furol Viscosity The time in seconds required for 60 cubic centimeters of a fluid to flow through the orifice of a Saybolt Furol Viscometer at a given temperature under specified conditions. The orifice of the furol viscometer is larger than that of the universal viscometer, the former instrument being used for more viscous fluids.

Semi Fluid Any substance having the attributes of both a solid and a liquid. More generally, any substance in which the force required to produce a deformation depends both on the magnitude and on the rate of deformation.

Shear Stress The force per unit area acting tangent to the surface of an element of a fluid or solid.

Sleeve Bearing A journal bearing, usually a full journal bearing.

Sludge Insoluble material formed as a result either of deterioration reactions in an oil or by contamination of an oil, or both.

Slushing Oil An oil or grease-like material used on metals to form a temporary protective coating against rust, corrosion, etc.

“Soluble” Cutting Oil A mineral oil containing an emulsifier which makes it capable of mixing easily with water to form a cutting fluid.

Solvency Ability of a fluid to dissolve organic materials and polymers, which is a function of aromaticity.

Specific Gravity The ratio of the weight in air of a given volume of a material to the weight in air of an equal volume of water at a stated temperature.

Sperm Oil A fixed nondrying pale yellow oil obtained from the head cavities and blubber of the sperm whale. Formerly used as an oil additive but now prohibited from use by law in the United States.

Spindle Oil A light-bodied oil used principally for lubricating textile spindles and for light, high speed machinery.

Splash Lubrication A system of lubrication in which parts of a mechanism dip into and splash lubricant onto themselves and/or other parts of the mechanism.

Stability Ability of a lubricant to resist natural degradation reactions upon exposure to UV radiation, heat, or oxygen.

Static Friction The friction between two surfaces not in relative motion but tending to slide over one another. The value of the static friction at the instant relative motion begins is termed break-away friction.

Strong Acid Number (S.A.N.) The quantity of base, expressed in milligrams of potassium hydroxide, required to titrate the strong acid constituents present in 1 gram of sample.

Strong Base Number (S.B.N.) The quantity of acid, expressed in milligrams of potassium hydroxide, required to titrate the strong base constituents present in 1 gram of sample.

Sulfurized Oil Oil to which sulfur or sulfur compounds have been added.

Surface Tension The tension exhibited at the free surface of liquids, measured in force per unit length.

SSU An abbreviation for Saybolt Seconds Universal Seconds used to indicate viscosity, e.g., SSU @ 100°F. Also SUS.

Synthetic Ester Oil Molecule prepared by reacting an organic acid with an organic alcohol and possessing some lubricant properties.

Synthetic Hydrocarbon Oil Molecule prepared by reacting paraffinic materials.

Synthetic Lubricant A lubricant produced from materials not naturally occurring in crude oil by either chemical synthesis or refining processes.

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