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Grease composition

A technology for lubricating grease composition and equipment, which is applied in the direction of lubricating composition, mechanical equipment, thickener, etc., can solve the problems of not preventing hydrogen or hydrogen embrittlement, and achieves excellent resistance to hydrogen embrittlement peeling and long lubrication life long effect

Inactive Publication Date: 2013-12-04
KYODO YUSHI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] However, these are all effects after hydrogen has been generated, that is, they are not methods for preventing the intrusion of hydrogen into the metal, and are not methods for coping with hydrogen embrittlement.

Method used

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  • Grease composition
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Examples

Experimental program
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Effect test

Embodiment

[0075] Adjustment of Test Grease

[0076] In the following base oil, 1 mol of diphenylmethane diisocyanate and monoamine (cyclohexylamine, octylamine, p-toluidine) were reacted, and after heating and cooling, the base oil and fat were obtained. The following additives and base oil were added to the base grease, and after grinding with three rollers, the working penetration was 350 to obtain the grease compositions of Examples 1-6 and Comparative Examples 1-8.

[0077] base oil

[0078] ○Alkyl diphenyl ether oil

[0079] · C12~C14 alkyl diphenyl ether oil: kinematic viscosity at 40°C = 97mm 2 / s

[0080] ○Polyol ester oil

[0081] · Dipentaerythritol ester oil: kinematic viscosity at 40°C = 76.9mm 2 / s

[0082] ○Synthetic hydrocarbon oil

[0083] ・Polyα-olefin oil: kinematic viscosity at 40°C = 68.0mm 2 / s

[0084] Anti-stripping additives

[0085] Rust inhibitor

[0086] ○Sulfonic acid Zn

[0087] ·Zn salt of dinonylnaphthalenesulfonic acid

[0088] ○Sulfonic acid...

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Abstract

The present invention provides a grease composition for a rolling bearing for automotive electrical equipment or automotive auxiliary equipment, the grease composition being characterized by containing a base oil having an alkyldiphenyl ether oil as an essential component, containing a diurea compound represented by formula (1) as a thickening agent and containing an organic sulfonate-based rust inhibitor and a load-bearing additive, as anti-peeling additives. (In the formula R2 denotes a diphenylmethane group. R1 and R3 may be the same or different and each denotes an aromatic hydrocarbon group having 6 to 12 carbon atoms.) This grease composition has a long bearing lubrication life even in a high temperature environment, has excellent peeling resistance and is sealed in a rolling bearing for automotive electrical equipment or auxiliary equipment.

Description

technical field [0001] The present invention relates to a grease composition used in rolling bearings for automotive electrical equipment or automotive auxiliary equipment. Background technique [0002] Responding to the need for smaller and lighter vehicles and larger space for use, it is necessary to reduce the space in the engine compartment. Along with this need, electric appliances such as generators and tensioners, and auxiliary parts also need to be smaller and lighter. In addition, the engine room is sealed for quietness, and the operating environment becomes high temperature. Therefore, a grease that can withstand high temperature is required. [0003] In addition, due to the smaller diameter of the pulley, the increase of the transmission torque, and the improvement of the durability of the belt, since the mid-1980s, the V-belt has been changed from the previous V-belt to the multi-V belt. Since then, there have been On the rolling surface of the rolling bearing, ...

Claims

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Application Information

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IPC IPC(8): C10M169/00F16C33/66C10M105/18C10M115/08C10M129/10C10M133/12C10M135/10C10M135/18C10M137/10C10N10/04C10N20/00C10N30/06C10N30/10C10N30/12C10N40/02C10N50/10
CPCC10M169/02C10M2215/064C10N2210/02C10M169/00C10M2219/068C10N2210/01C10M2207/12C10M2207/16F16C33/6633C10M2207/2835C10M2219/044C10M2215/1026C10N2230/10C10M169/06C10N2240/201C10M2207/0406C10M2223/045C10N2240/02C10M2223/04C10M2207/026C10M2205/0285C10M169/04F16C2326/01C10N2030/10C10N2010/02C10N2040/02C10N2040/16C10N2010/04C10N2050/10C10M105/18C10M115/08C10M135/10C10M137/10
Inventor 今井裕相田亮
Owner KYODO YUSHI CO LTD
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