| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a bearing made of a graphite added resin-based material, substituted for a sintered copper-based alloy which has been used for an automatic transmission conventionally. <P>SOLUTION: The slide bearing results from baking, onto a back metal, a sliding layer of 5-60 wt.% graphite having an average diameter of 5-50 μm and a graphitization degree of at least 0.6, the remainder comprising a polyimide resin and/or a polyamide-imide resin. The form of the graphite has an average shape factor (Y<SB POS="POST">AVE</SB>) as defined of 1-4 for the particles excluding the minute particles that are no greater than 0.5 times the average diameter, and there being at least 70% by number of particles having a shape factor (Y) in the range of 1-1.5. Here, Y<SB POS="POST">AVE</SB>=total[äPM<SB POS="POST">i</SB><SP POS="POST">2</SP>/(4πA<SB POS="POST">i</SB>)}]/i, Y=PM<SP POS="POST">2</SP>/(4πA), PM is a circumferential length of one particle and A is a cross sectional area per one particle, and i is the number of measured pieces of particles. <P>COPYRIGHT: (C)2013,JPO&INPIT |
