What are the same and different points of hydraulic motor and pump?

Of course! Hydraulic motors and pumps are both part of hydraulic systems, and they share some commonalities in how they are made and operated. However, their function and internal components differ significantly as well.

Similarities:

1. Both hydrostatic motors and hydrostatic pumps utilize fluid pressure to transfer energy.
2. They both have a rotating shaft that transmits energy to other parts within the hydraulic system.
3. In addition, each has an inlet and an outlet port through which liquid can flow into or out of it.

Differences:

1. Function: The main distinction between hydraulic motors and pumps is their function. A hydraulic motor converts force produced by a liquid into mechanical work output, with this output being rotational motion, while a hydraulic pump converts mechanical work done on the pump into liquid energy thereby giving rise to flow of fluid.
2. Internal components: Each also possesses different internal components from the other. While a typical hydrostatic motor has a rotor as well as a shaft; for example, typical hydrostatic pump has gear(s), vane(s) or piston(s) along with casing(s).
3. Flow rate & pressure: Also differing between these two are flow rate characteristics & pressure limits. Pump hydraulics come up with high-pressure flows useful in powering hydraulic cylinders, motors, among others; conversely motor hydraulics tend to exhibit lower pressure capabilities but higher flow rates.
4. Efficiency: Finally there is efficiency where they do not show similarity at all. Therefore it would be better off saying that whereas one unit can deliver more amount of oil per unit time in comparison with another which requires similar power input while working under same conditions of load or speed whichever applies.

Summarily, hydraulic motors and pumps possess such similarities as fluid pressure and rotating shafts, although they in distinction to this have a number of differences that are majorly centered on the aspect of their functions, internals capabilities in aspects like flow rate and pressure among others, and effectiveness.