Types of Hydraulic Pumps

What type of pump uses two gears rotating against each other to provide fluid movement?

• Piston pump

• Rotary vein pump

• External gear pump

• Internal gear pump

What creates a vacuum at the inlet port of an external gear pump?

• Meshing of the teeth

• Expanding volume on the inlet side

• Fluid trapped in the slots between teeth

• Drive gear rotation

What separates the intake and discharge portions of the fluid in an internal gear pump?

• Cylinder block

• Swash plate

• Divider

• Drive shaft

Which type of pump has a rotating shaft connected to a cylinder block containing pistons?

• Radial piston pump

• Rotary vein pump

• Internal gear pump

• Piston pump

What maintains the tension in the vanes of a vane pump?

• Shaft rotation

• Springs

• Hydraulic pressure

• Pump housing

What type of pump has a stationary swash plate that sits at an angle to the cylinder?

• Rotary vein pump

• Internal gear pump

• Radial piston pump

• Piston pump

What is the advantage of vane pumps in handling fluids?

• Low pressure fluids

• High pressure fluids

• High viscosity fluids

• Low viscosity fluids at higher pressures

What is the disadvantage of radial piston pumps?

• High loads at low speeds

• High efficiency

• High pressure handling

• Low noise level

When are hand pumps typically used?

• On shop presses

• On portable equipment

• When extra expense is warranted

• When power is available

What type of pump is always a piston type and usually constructed with a piston working between two check valves?

• Rotary vein pump

• Internal gear pump

• Radial piston pump

• Piston pump