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Lubricating oil composition for sintered oil bearing

A technology of lubricating oil and lubricating oil composition for bearings, applied in the directions of lubricating composition, petroleum industry, additives, etc., can solve the problems of insufficient anti-oxidation properties, etc., and achieve the effect of improving anti-oxidation properties

Active Publication Date: 2019-04-30
NOK KLUEBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the antioxidant properties are not sufficient

Method used

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  • Lubricating oil composition for sintered oil bearing
  • Lubricating oil composition for sintered oil bearing
  • Lubricating oil composition for sintered oil bearing

Examples

Experimental program
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Effect test

Embodiment

[0039] Hereinafter, the present invention will be described in more detail based on examples, but the present invention is not limited to these examples.

[0040] (1) Preparation method of sample oil

[0041] Lubricating oil compositions (sample oils) were prepared by mixing the following components with a mixer in the amounts (% by weight) shown in Tables 1 and 2.

[0042] Synthetic hydrocarbon oil: poly-α-olefin (DURASYN168 (made by INEOS), viscosity at 40°C: 46mm 2 / s)

[0043] Amine-based antioxidant: octylated diphenylamine (NOCRAC AD-F (manufactured by Ouchi Shinshin Chemical Co., Ltd.))

[0044] Ammonium molybdate salt: a salt formed from molybdic acid and di(tridecyl)amine (the content of SAKURA-LUBE 700 (manufactured by ADEKA) is 25% by weight)

[0045] Phenolic antioxidant: octadecyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate (SONGNOX1076PW (manufactured by SONGWONG))

[0046] Phosphorus-based antioxidant: Tris(2,4-di-tert-butylphenyl)phosphite (Irganox 168...

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Abstract

The invention provides a sintered oil bearing lubricating oil composition having a low frictional property and an excellent wear-resisting property and having an excellent antioxidant property. The sintered oil bearing lubricating oil composition of the invention is a sintered oil bearing lubricating oil composition including base oil, an amine-based antioxidant and ammonium molybdate salt, wherein the content of the amine-based antioxidant accounts for 0.1 to 2.9 wt% with respect to the lubrication oil composition as a whole, and the content of ammonium molybdate salt accounts for 0.025 to 9.0 wt% with respect to the lubricating oil composition as a whole.

Description

technical field [0001] The present invention relates to a lubricating oil composition for sintered oil-impregnated bearings. Background technique [0002] In various industrial fields such as steel, automobiles, precision machinery, and general machinery, the lubricity provided by lubricating oil is becoming more and more important in terms of energy saving. In recent years, the requirements for lubricating oils are becoming complex and highly specific. Specifically, there is a strong demand for a lubricating oil that not only improves lubricity but also improves stability with various parts such as metals and resins. [0003] For example, a sintered oil-impregnated bearing is a bearing in which impregnated oil is impregnated into countless oil pores formed by sintering powders of various metal materials. The material of the bearing mainly includes iron and copper, and then is composed of various metals. These metal components are in contact with the impregnating oil with...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M141/06C10N30/06C10N30/10C10N40/02C10N30/02
Inventor 小山内大
Owner NOK KLUEBER CO LTD