Sundstrand Sauer Danfoss Series 40 Charge Pump Flow & Power Requirements

Some of the features we are fixing to mention may contradict the 10% displacement rule to some degree.

1. operation at low input speeds below 1500 RPM
2. auxiliary flow conditions
3. high torque low speed motors
4. shock loadings
5. really long system lines

If any of these conditions do not meet the 10% displacement rule or are not available, then it is time to contact a dealer or your supplier to find out what is wrong with your unit.

M25 pumps don’t submit to integral charge pumps. Some of the other Series 40 pumps come with or without charge pumps. When you have an integral charge pump it is not used, you have to use an external charge pump to make sure sufficient charge pressure and cooling are available to work at its highest performance.

We can help answer any questions you may have about your Series 40 M25- M46 units.

Call 800-361-0068

sales@hydrostatic-transmission.com

You  can send emails with any questions or pictures you may have.