Applicable scope: Dong Kang 6BTA5.9-M150, East 6BT5.9-G2, 6BT5.9-GM80, Kang Dong Kang Dong Kang Dong Kang 6BT5.9-M120, 4BTA3.9-GM47 related accessories: pump working principle: support fixed location: fault and analysis: analysis of crack and fracture: stress concentration, fatigue wear, corrosion and oxidation