In hydraulic transmis ion systems, energy is transmitted and controlled by means of a pressurized liquid in a closed circuit. Pumps are devices that convert mechanical energy into hydraulic energy. Motors are devices that convert hydraulic energy into mechanical energy. This standard sets the geometric dis lacements V of pumps and hydraulic motors with rotary or reciprocating motion. It is also applicable to elements with variable dis lacement. In this case, the values given relate to the maximum dis lacement. The geometric dis lacements specified in this standard can serve as a guide for the construction of positive dis lacement hydraulic pumps and motors. They can also be used to calculate other construction criteria.
NBN E 48-003-1976 history
1976NBN E 48-003-1976 Water and air transmission. Hydraulic pumps and hydraulic engines. Geometric capacity of the cylinder