grease composition

A grease composition and compound technology, applied in the directions of lubricating compositions, thickeners, additives, etc., can solve the problems of increased stirring resistance, increased heat generation, shortened life, etc., to reduce friction torque, inhibit direct contact, extend The effect of peeling life

Active Publication Date: 2020-05-05
KYODO YUSHI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method has a problem of increased heat generation due to higher viscosity, resulting in increased stirring resistance
[0010] When the oil film is thinned, microscopic protrusions on the surface come into contact, and peeling from the surface tends to occur, resulting in shortened life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0086] Preparation of test grease:

[0087] Grease compositions of Examples and Comparative Examples were prepared using the thickeners, base oils, and additives shown in the table below. Specifically, diphenylmethane diisocyanate was reacted with a predetermined amine in a base oil, heated and cooled, and kneaded by a three-roll mill to obtain grease compositions of Examples and Comparative Examples.

[0088] The thickener amount was adjusted so that the working penetration (test method JIS K2220 7.) of the grease composition was 300.

[0089] The grease composition prepared above was evaluated by the following test method. The results are shown in the table below.

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PUM

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Abstract

The present invention provides a lubricating grease composition for lubricating mechanical parts having steel parts to be lubricated in rolling motion and sliding rolling motion, characterized in that it contains a base oil, a thickener, and an additive. At least one compound of ethylene wax, oxidized polyethylene wax, polypropylene wax, montan wax and amide wax.

Description

technical field [0001] The present invention relates to a grease composition used for lubricating mechanical parts having steel lubricated parts performing rolling motion and sliding rolling motion. Background technique [0002] Typical mechanical parts having steel parts to be lubricated that perform rolling motion and sliding rolling motion include rolling bearings, gears, ball screws, linear guide bearings, couplings, and cams. [0003] Specifically, various motors for industrial machinery, various motors for office equipment, rolling bearings used in various motors for automobiles, bearings for automobile wheels, generators, electromagnetic clutches, idler pulleys, tensioners for timing belts, etc. Rolling bearings used in automotive electrical components or auxiliary parts, gears used in windmills, robots, automobiles, etc. reducers or speed-ups, ball screws used in electric power steering or machine tools, industrial machines or electronic equipment Linear guide beari...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M143/02C10M133/16C10M133/56C10M143/04C10M143/18C10M159/06C10M115/08C10N30/06C10N40/02C10N40/04C10N50/10
CPCC10M133/56C10M143/02C10M143/04C10M143/18C10M159/06C10M115/08C10M133/16C10M2203/1025C10M2203/1065C10M2205/022C10M2205/024C10M2205/16C10M2205/18C10M2207/0406C10M2207/2805C10M2207/2835C10M2215/1026C10M169/06C10M2205/14C10M2215/006C10M2215/28C10N2020/04C10N2020/02C10N2030/06C10N2040/02C10N2040/04C10N2050/10C10N2060/04
Inventor 斋藤绫佑佐藤雄太
Owner KYODO YUSHI CO LTD
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