Strokes Per Minute

How to determine strokes per minute for a hydraulic press
The number of strokes per minute for a hydraulic press is determined by calculating a separate time for each phase of the ram stroke. The rapid advance time is calculated, then the pressing time, (the work stroke); then, if there is no dwell time, the rapid return.



The basic formula for determining the length of time in seconds for each phase of the stroke:

Example: a hydraulic press with a 600 IPM rapid advance, 60 IPM pressing speed, and 600 IPM rapid return. The work requires a 3" advance, 1" work stroke, and 4" rapid return.


60 ÷ 2.199 = 27 cycles per minute.

* Electrical actuation and valve shift time varies depending on the type of hydraulic circuit. One half second is a reasonable average figure.
1. These formula are intended as guidelines only. Please consult a qualified manufacturing engineer for recommendations concerning your specific requirements.
2. Based on steel shaft and cast iron bushing (with OD/ID > 2).