Danfoss / Eaton-39 Variable Pump CW 3923-390

Specifications

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	Net Pack Quantity Units EA	Product Width 10.74	Special Features None	Sub Brand None	Supplier Part Number 3923-390	Type Variable Displacement	Product Weight 62.60 lbs

Product Questions & Answers 2

Product Questions & Answers

Reckon this pump could handle the kinda work you find on a construction site day in and day out?

Question by: Dwayne M on Oct 1, 2025, 11:45 AM

This Danfoss/Eaton-39 variable pump is built for demanding mobile applications, including construction, agriculture, truck and bus, and oil and gas environments. Its servo control mechanism will give you consistent performance under load.

Answer by: Customer Support on Oct 2, 2025, 7:49 PM

Got a closed-circuit build on a piece of construction equipment and need a variable displacement pump with servo control. This the right fit for that kind of setup?

Question by: Janet M on Feb 20, 2026, 7:15 PM

Closed-circuit variable displacement with servo control is exactly what this pump is built around. It handles construction applications and adjusts displacement based on system demand, so performance stays consistent even when load conditions shift. The servo control mechanism gives you precise adjustment rather than fixed output, which matters a lot in equipment that sees varying duty across a workday.

Answer by: Customer Support on Feb 22, 2026, 8:07 AM