Nsk Corporation

Yohei Murata

Hideyuki Uyama

Tomohiro Motoda

Provided is a friction design method capable of estimating sliding friction generated between mutual sliding surfaces of two sliding members lubricated with lubricant with high precision. The friction design method sets a friction coefficient &#x3bc; in a sliding surface model corresponding to mutual sliding surfaces of two sliding members (and) lubricated with lubricant (step S), and, based on a correlation between the friction coefficient &#x3bc; and an oil film parameter (&#x39b;(Rk) or &#x39b;(Rk+Rpk)) calculated using a core portion level difference (Rk) or a sum of the core portion level difference (Rk) and reduced peak height (Rpk) as a parameter representing surface roughness in the sliding surface model (step S), sets a target value for surface roughness of the sliding surfaces required to be controlled as a product (steps Sto S).

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Fujisawa, Japan

Yohei Murata