| 摘要 |
PURPOSE:To improve bearing characteristics in a high temperature and humidity condition or in a low temperature by providing a slide bearing bush formed of a high-polymer material to which at least a kind of pulverized powder among MoS2, graphite and BN is added at 5-60wt%. CONSTITUTION:In a bearing for a shutter screen of a focal-plane shutter in a camera, a shutter screen rotary shaft 2 is rotatably mounted on a fixing base plate 3 through a bearing 1. The bearing 1 is formed of a high-polymer material to which at least a kind of pulverized powder among MoS2, C (graphite) and BN is added at 5-60wt%. As a high-polymer material, used is a thermosetting resin such as an epoxy resin or the like, or a thermoplastic resin such as a polyethylene resin or the like. A slide bearing formed of the above material provides a good lubrication even in a high temperature and humidity condition or in a low temperature condition. |
