| 摘要 |
PURPOSE: A connecting apparatus for a work tool is provided to reduce repetitive oil supply to a bearing unit and secure high sound absorbing performance. CONSTITUTION: A connecting apparatus for a work tool comprises a work tool bush(1) and a work tool pin(4). A metallic sliding material(7) capable of storing lubricating oil and/or lubricant is interposed in a gap formed by the bush and the pin. The work tool pin is made out of hardened steel with hardness of HRC45 or greater. The metallic sliding material is a metallic porous sintering material with air vents of 5~30volume%. |
