Figure 4-11 shows a vane-type motor. Flow from the pump enters the inlet, forces the rotor and vanes to rotate, and passes out through the…
Figure 4-10 shows a gear-type motor. Both gears are driven gears, but only one is connected to the output shaft. Operation is essentially the reverse…
Hydraulic motors convert hydraulic energy into mechanical energy. In industrial hydraulic circuits, pumps and motors are normally combined with a proper valving and piping to…
a. Overloading. One risk of overloading is the danger of excess torque on a drive shaft. Torque is circular force on an object. An increase…
Piston pumps are either radial or axial. a. Radial. In a radial piston pump (Figure 3-14), the pistons are arranged like wheel spokes in a…
In a vane-type pump, a slotted rotor splined to a drive shaft rotates between closely fitted side plates that are inside of an elliptical- or…
Gear pumps are external, internal, or lobe types. a. External. Figure 3-6 shows the operating principle of an external gear pump. It consists of a…
In most rotary hydraulic pumps (Figure 3-3), the design is such that the pumping chambers increase in size at the inlet, thereby creating a vacuum.…
Slippage is oil leaking from a pressure outlet to a low-pressure area or back to an inlet. A drain passage allows leaking oil to return…
Displacement is the amount of liquid transferred from a pumpโs inlet to its outlet in one revolution or cycle. In a rotary pump, displacement is…