This paper investigates flow characteristics of external spur gear pumps using a flowrate formula derived in closed form. Non dimensional flowrates and fluctuation coefficients of gear pumps are discussed. By using the formula, flowrates can be calculated This paper investigates flow characteristics of external spur gear pumps using a flowrate formula derived in closed form. Non dimensional flowrates and fluctuation coefficients of gear pumps are discussed. By using the formula, flowrates can be calculated
