Uncertainty Evaluation of Maximum Lifting Force for Tractor

Maximum lifting force test is a basic and necessary item in tractor performance test，the uncertainty is one of base to judge quality level of laboratory testing.Uncertainty of tractor maximum lifting force was evaluated based on theory of uncertainty and test data step by step，and results of uncertainty value was 0.17 kN.Comparing of influence of uncertainty items，it was cleared that tractor maximum lifting force test in test center was in control.