Daido Metal Company Ltd.

Ichie Nomura

Osamu Ishigo

Yukihiko Kagohara

Mitsuru Sugita

Yoshikazu Mizuno

Naoki Iwama

Hiroshi Munetoki

Hidehisa Kato

Tomoyuki Uemura

Ryouhei Kusunoki

Takashi Shiota

A bearing device for internal combustion engines, comprising a crankshaft of an internal combustion engine and bearings supporting the crankshaft, and wherein the crankshaft is made of steel having not been subjected to surface hardening and having a structure, which is mainly composed of pearlite having the pro-eutectoid ferrite fraction of at most 3%, and is processed to have the surface roughness Rz of at most 0.8 &#x3bc;m, and wherein the bearings have an aluminum bearing alloy bonded to a back plate thereof and contain, as an alloy component thereof, at least Si particles of less than 4 mass %, whereby early abrasion and scratches of the crankshaft are suppressed to be equivalent to or less than abrasion loss and scratches of conventional DCI shafts.

Bearing device for internal combustion engines

Growing community of inventors

Tokai, Japan

Ichie Nomura