Danfoss / Eaton-39 Variable Pump CW

Description & Features

Designed for demanding mobile applications, the Danfoss / Eaton-39 Variable Pump CW is a closed-circuit, variable displacement piston pump built to perform reliably across construction, agriculture, truck and bus, oil and gas, and other mobile environments. Its servo control mechanism enables precise displacement adjustment to match system demands, making it well suited for equipment where performance consistency under load is critical.

The pump supports multiple control options, giving system designers flexibility in how displacement is managed. Pro-FX ready compatibility allows integration with advanced electronic control systems for applications requiring programmable or coordinated machine control. Clockwise rotation is standard for this configuration. With a lead time of 50 days, early procurement planning is recommended for project scheduling.

SKU: 3923-390

Supplier Part Number (MPN): 3923-390

Specifications

Alternate Part Numbers
Alternate Part Number MINO-00900X26127
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)

Question by: Dwayne M on Oct 1, 2025, 11:45 AM
Reckon this pump could handle the kinda work you find on a construction site day in and day out?
Answer by: Customer Support on Oct 2, 2025, 7:49 PM
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.
Question by: Janet M on Feb 20, 2026, 7:15 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?
Answer by: Customer Support on Feb 22, 2026, 8:07 AM
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.