Nsk Corporation

Daiju Takahashi

Yasuo Murakami

Koichi Hachiya

Shinji Fujita

Hiroyuki Uchida

A rolling device in which damage such as seizure or wear is less liable to occur and which has a long life, even when used under severe conditions such as high speed, heavy load, high temperature and insufficient lubrication. A thrust needle roller bearing includes an inner ring, outer ring, and a plurality of rolling elementsrollably arranged between a raceway surfaceof inner ringand a raceway surfaceof outer ring. A lubricant film consisting of a solid lubricant is coated over an area equivalent to an area ratio of 75% or more of at least one member of the group consisting of raceway surfaceof inner ring, raceway surfaceof outer ring, and a rolling contact surfaceof rolling element. The thickness of the lubricant film is preferably 0.05 &#x3bc;m or more and 8 &#x3bc;m or less.

Growing community of inventors

Setagaya-ku, Japan

Daiju Takahashi