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DANFOSS / EATON-S2 39 VARIABLE PUMP CW

Description & Features

Designed for closed circuit hydraulic systems in demanding mobile environments, the Danfoss / Eaton S2 39 Variable Pump Cw is a variable displacement piston pump well-suited to construction, agriculture, truck and bus, oil and gas, and other mobile applications. Its closed circuit architecture makes it a practical fit where precise flow control and system efficiency are priorities.

Built on the Danfoss Power Solutions platform, this Series 2 pump offers proven reliability across a range of duty cycles and field conditions. Multiple control options provide application flexibility, and Pro-FX ready compatibility supports integration with advanced electronic control systems where needed. Variable displacement allows output to be matched to load demand, which is a key consideration in mobile hydraulic circuit design.

SKU: 3922-183

Supplier Part Number (MPN): 3922-183

Specifications

Alternate Part Numbers Alternate Part Number MINO-00900X26105	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 8.51	Sub Brand None	Supplier Part Number 3922-183	Type Variable Displacement	Product Weight 128.00 lbs

Product Questions & Answers (2)

Question by: Billy J on Jan 24, 2026, 6:11 AM

Will this work on a construction excavator?

Answer by: Customer Support on Jan 25, 2026, 10:53 AM

Application-wise, it's definitely used in construction equipment, along with agriculture, trucks, buses, and even some oil and gas applications. So yeah, should fit the bill for an excavator.

Question by: Bonnie P on Aug 26, 2025, 8:57 AM

Running a closed circuit setup on a track loader and been burned before by pumps that couldn't keep up with the duty cycles we throw at em. This a Series 2 platform from Danfoss or something older?

Answer by: Customer Support on Aug 28, 2025, 6:09 AM

Built on the Danfoss Power Solutions Series 2 platform, which has a solid track record in heavy mobile applications. The S2 39 is a variable displacement piston pump, so output adjusts to match load demand rather than running at a fixed rate. That characteristic alone makes it a better fit for equipment that sees varied and demanding duty cycles, like a track loader would. The closed circuit architecture is part of what makes it practical for that kind of work.