Piston Speeds
The feed flow or return flow speeds are calculated using the flows of liquid coming from the pump, which fill the stroke volume of the hydraulic cylinder within a certain unit of time.For the speeds specified above, the following equations result under consideration of the usual units:
| v | = | Q
Ak |
Feed flow |
| v | = | Q
Ar |
Return flow |
Please observe that the volume of liquid flowing away during the return flow is always greater than the in-flowing liquid due to the difference in area.
As a result, the return flow is faster than the feed flow.
If the length of the cylinder stroke is known, the stroke time t can be calculated as follows:
| t | = | Ak * h
Q |
Feed flow |
| t | = | Ar * h
Q |
Return flow |
