DANFOSS / EATON-S2 39 VARIABLE PUMP CCW

Application
Construction, Agriculture, Truck and Bus, Oil and Gas, and other mobile applications
Brand
Danfoss – Hydraulics
Brand
Danfoss Power Solutions
Pack Size
1.00
UOM
EA
Features
Proven reliability in demanding applications|Multiple control options|Pro-FX ready
ICC
Mobile - CC Piston Pumps
Language
English
Product Width
8.70
Sub Brand
None
Supplier Part Number
3922-177
Type
Variable Displacement
Product Weight
128.00 lbs

Product Questions & Answers

Running a closed circuit setup on a piece of construction equipment and need a variable displacement pump that can handle the workload. This the right kind of unit for that?
Question by: Dwayne M on Feb 7, 2026, 2:49 PM
Closed circuit piston pump applications in construction are exactly where this pump is built to operate. It's a heavy duty unit from Danfoss Power Solutions with variable displacement and servo control, so it adjusts output based on demand rather than running at a fixed rate. That makes it well suited for mobile equipment where loads shift constantly and efficiency matters. Agriculture, truck and bus, and oil and gas rigs are also listed applications, so it covers a pretty wide range of tough mobile environments.
Answer by: Customer Support on Feb 8, 2026, 5:45 PM
Will this pump work on a tractor, or is it just for big rigs?
Question by: Vince B on Sep 1, 2025, 8:07 PM
It's designed for mobile applications, so tractors and other agricultural equipment are definitely within its range, along with construction equipment, trucks, buses, and even oil and gas machinery.
Answer by: Customer Support on Sep 3, 2025, 7:30 AM