This study experimentally analyzes the contact fatigue life of the sleeve–pin–shaft connection specimens under cyclic axial and pure torsional loading. Based on the stress/strain results along the pin–hole edge of the shaft obtained using the finite eleme This study experimentally analyzes the contact fatigue life of the sleeve–pin–shaft connection specimens under cyclic axial and pure torsional loading. Based on the stress/strain results along the pin–hole edge of the shaft obtained using the finite eleme