Model: PQ-6 Description: PQ-6 Pure Bending Bending Fatigue Testing Machine is suitable for testing the fatigue strength of metals and other materials under bending & rotating. The Pure Bending bending fatigue testing machine is usually used to test the bending fatigue limit 未-1p of metals under the action of symmetrical repeatedly alternating bending force. Accordingly the tension-compression fatigue limit 未-1p and torsion fatigue limit 未-1 can be determined by calculation according to experienced formula. The Pure Bending Bending Bending Fatigue Tester Reversible has a simple structure and is easy to operate, both stable and reliable. The fatigue testing machine is very popular at factories and high school laboratories.