Friction and wear behavior of selflubrication PTFE fabric composites under highload condition was evaluated in shaftonbush friction and wear tester.The worn surfaces of selflubricating PTFE fabric composites and counterpart bush were analyzed by using the scanning electron microcopy (SEM),and the wear mechanism was also discussed.The results show that the selflubricating PTFE fabric composites can withstand the test of 400 MPa load and 25 000 times oscillation frequency.There is a significant correlation between the friction and wear properties of selflubricating fabric composites and the test load.The friction coefficient are obviously decreased and wear depth are increased with the increasing of test load.Along with the change of load from low to high,the wear mechanism is changed from adhesive wear to abrasive wear.