Sundstrand Sauer Danfoss Series 40 Control Options

On the M25, M35 and M44 pumps, they are controlled by a direct displacement controller.
On the M46 pumps, they have a control system with a choice of different controls that give you smoothness, stepless and positive control in either direction.
Manual Displacement
Hydraulic Displacement
Electrical Displacement
And on the M46 models you also have an option of a three position electric control.
And on the charts they explain better on what machines, function and what controls you can have.

So if you need further help with this, please give us a call 800-361-0068
sales@hydrostatic-transmission.com