Grease composition

Abstract

The present invention provides a grease composition which contains a base oil, a thickening agent and an anti-flaking additive such as a compound represented by, for example, formula (1-1), and which suppresses white layer flaking in a rolling bearing. (In the formula, R1 and R4 are each independently a straight chain or branched chain alkyl or alkenyl group having 1-20 carbon atoms.)

Description

technical field [0001] The present invention relates to a grease composition for suppressing white layer exfoliation of rolling bearings. Background technique [0002] Responding to the demand for smaller, lighter and more usable space in automobiles, it is necessary to reduce the space in the engine compartment. Along with this demand, electrical appliances such as alternators and tensioners, and auxiliary parts are also required 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, in order to reduce the diameter of the pulley, increase the transmission torque, and improve the durability of the belt, since the mid-1980s, multi-V belts have been gradually adopted. Since then, there have been occurrences on the rolling surface of rolling bearings. Specific early abnormal peeling problem with white tissu...

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Problems solved by technology

[0012] However, none of these is a method for preventing the effect of hydrogen generation, that is, preventing the intrusion of hydrogen into the metal, and cannot cope with peeling after hydrogen generation.

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