Total tonnage required – this is important for certain applications, but not a sole factor to consider. Minimum tonnage needed should also be considered. It is typically 20% of the maximum tonnage.
Electronically adjustable force or pressure – If you have a variety of parts with different force needs, you may consider electronic control of tonnage force. This will allow your force requirement to be stored and recalled next time you run that part.
Maintain tonnage and dwell – Many custom applications, such as piercing, the press ram returns immediately after finishing the press stroke. Other times, once the press force is reached, the ram must stay in the closed position and continue to apply tonnage. This allows metal parts to flow to the new shape or bonded parts to join completely.
Versatility – does your process change? Some custom hydraulic presses allow for more versatile production and this can be a determining factor in the process of choosing the right press for your customized application.