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Have four digits
| Глоссарий терминов смазочных материалов |
The first indicates the type of bearing, the second the bearing series and the third and fourth the bore size of the bearing. some manufacturers replace the first digit with letters of the alphabet to identify their bearings, others use numbers and letters.
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Head (hydraulics), английский
The pressure exerted by a fluid on a unit area because of the height of the surface of the fluid above the point where pressure is measured; may be expressed as psi or “feet”.
Halogenated solvents, английский
Solvents formulated with one of the halogens, usually chlorine or fluorine. halogenated solvents are associated with the atmospheric depletion of ozone. hardness – resistance of metal to plastic deformation, usually by indentation. it also includes resistance to scratching, abrasion or cutting. it is the property of a metal, which gives it the ability to resist being permanently deformed when a load is applied.
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