Шестеренный гидромотор - устройство, работа, достоинства и недостатки

How does a gear motor works, how does it differ from a pump? How to determine the rotational speed and torque on the hydraulic motor shaft? Advantages and disadvantages of gear machines. More information about gear motors, read the article http://www.hydro-pnevmo.ru/topic.php?ID=311