Research & Development
Maintenance-free bush [HN bush]
2001.10 Japanese Society of Tribologists by Hideki Akita, Ryouhe Suzuki, Gokita Osamu, (Hitachi Powded Metals.Co., Ltd) Motoharu Miyasaka, Takeshi Yanase
Now, a maintenance-free bush which does not need a grease rise under high pressure (70 or more MPa) and low-speed rocking (0.01 - 0.05 m/s, 120 degrees of rocking angles) is strongly desired from the environmental side. For the reason, the sintering bush which included the high viscosity oil of a Fe-Cu-C system in the bush of a bearing part was developed. This bush has acquired popularity in the industrial machine field, such as an excavator.
mail: Fakita92@hitachi-kenki.co.jp
