Horizontal double suction pump impeller lock

Horizontal double suction pump mechanical seal leakage, leakage between the sleeve and the shaft (inter axis leakage) is relatively common.
Generally, the impeller shaft between the leak is not the lock master lock, in fact lead to inter axis leakage of many factors, such as axial pad failure, migration, axis there are impurities, shaft and sleeve with a larger form bit error, contact surface damage, shaft gap between the parts, the first thread long will lead to inter axis leakage.
Lock nut lock will only lead to excessive axial pad between premature failure, on the contrary a moderate locked mother, so that axis pad compression always maintain a certain flexibility in the operation of the lock master will automatically lock the right time, so that the shaft is always in good sealed state.