INDUSTRIAL PUMP Leduc axial pumps are of the stationary cylinder block type. The inclined swashplate is turned by the drive shaft, thus causing the alternate movement of the pistons. Fluid enters the pistons via a groove in the swashplate and is expelled via check valves, self–priming if required. The forces on the shaft are taken up by bearings. The pump body is made of forged steel. A precise calculation of the stability of the films of fluid between the friction surfaces means that there is virtually no wear on the moving parts.