| 摘要 |
PURPOSE:To provide an injection moldable bearing composition which has excellent friction and wear characteristics, good configuration stability against a high dynamic load, excellent durability, by forming the titled composition by a predetermined range of blending quantity of a thermoplastic resin, PTFE powder and GF and setting the ratio of the average particle diameter of PTFE to the average fiber length to 1:10-4:1. CONSTITUTION:The titled composition consists of a thermoplastic resin (a), a polytetrafluoroethylene powder (b) and a glass fiber (c), and (a) is set to 30- 85wt%, (b) to 10-60wt% and (c) to 5-60wt%. Further, the ratio between the average particle diameter of (b) and the average fiber length of (c) is selected to 1:10-4:1. When the ratio between the particle diameter of PTFE powder and the average fiber length of the glass fiber is less than 1:10 or exceeds 4:1, dropout of the PTFE particle under the high dynamic load is remarkable, the configuration stability is lowered and the object of the present invention cannot be accomplished. |
