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STOCK CHANGE PROGRAM

x20 Stock Change Program

Open loop piston pumps configured to match your machine.

The Danfoss x20 Stock Change Program is built for those situations. By stocking base pumps and key components, pumps can be reconfigured to match the required setup and shipped quickly, reducing downtime compared with waiting for a factory configuration.

Shipped quickly, reducing downtime by not waiting for factory configuration.
Covers several common x20 series configurations (220, 420, and 620 groups).
Reworked to match required setup using stocked base pumps and key components.
Matches required flange, shaft, control style, porting, and rotation.
Industrial mechanical open loop piston pump components
Call (561) 570-3190 Email to Request Quote
PROGRAM CAPABILITIES

What the Program Supports

This program covers several common x20 series pump configurations used in industrial and mobile hydraulic systems.

Configurations are available across multiple displacement ranges and frame sizes, including pumps in the 220, 420, and 620 groups. These pumps are commonly used where load sense or pressure compensated controls are required and where flange, shaft, and port options must match an existing installation.

Depending on the application, available configuration options may include:

Multiple flange styles and different porting arrangements
Keyed and splined shaft options available
Load sense and pressure compensated controls
Features such as max volume stop, bleed down orifice, destroke valves, and thru drive

How Pumps Are Identified

Most requests start with a model number or tag. The key items typically needed are: Flange style, Shaft type, Control type, Port style, Rotation, and Displacement. Confirming those details early helps avoid installation issues.

Configuration Limits

Not all combinations are compatible, and some configuration limits apply depending on the pump frame and control type. Our team ensures the final configuration matches compatibility requirements before assembly.

PROGRAM SPECIFICATIONS

Available Configurations

The Build Shop stocks base pumps and components that allow us to reconfigure pumps and ship in a couple days from West Palm Beach. Available in both Clockwise and Counter-clockwise rotations.

220 Pumps

220 Pump Series
Displacements Flanges Shafts Controls Ports Special Features
28 cm³ (1.71 in³) 2-Bolt B 7/8" Keyed Load Sense O-Ring Side Max Volume Stop
1" Keyed Pressure Comp Only O-Ring Rear Bleed Down Orifice
13T Splined LS w/Remote Press Comp C-61 Side Destroke Valve
15T Splined C-61 Rear

420 Pumps

420 Pump Series
Displacements Flanges Shafts Controls Ports Special Features
41 cm³ (2.50 in³) 2-Bolt B 1" Keyed Load Sense O-Ring Side Max Volume Stop
49 cm³ (3.00 in³) 2/4-Bolt C 1" Tapered Pressure Comp Only O-Ring Rear Bleed Down Orifice
62 cm³ (3.80 in³) 13T Splined LS w/Remote Press Comp C-61 Side Destroke Valve
80 cm³ (4.88 in³) 14T Splined C-61 Rear Thru-Drive A Flange
15T Splined Thru-Drive B Flange
Viton Shaft Seal

620 Pumps

620 Pump Series
Displacements Flanges Shafts Controls Ports Special Features
74 cm³ (4.51 in³) 4-Bolt C 1.25" Keyed Load Sense C-61 Side Max Volume Stop
98 cm³ (5.98 in³) 14T Splined Pressure Comp Only Bleed Down Orifice
17T Splined LS w/Remote Press Comp Destroke Valve
Thru-Drive A Flange
Thru-Drive B Flange
Thru-Drive C Flange
Viton Shaft Seal

Configuration Note: Not all combinations of features are available (i.e., rear ports and thru drives are incompatible). Please contact HSC Technical Support for details and accurate quoting.

x20 Stock Change Program Flyer

PDF • Overview & Specifications

Download PDF
Woman engineer meticulously inspecting and configuring a Loop Piston Pump in a workshop
HANDS-ON KNOWLEDGE

Experience That Matters

Open loop piston pumps are sensitive to configuration details, particularly when replacing an existing unit in the field. Small differences in controls or mounting can prevent a pump from working as expected.

The teams handling these configurations work with piston pumps and hydraulic systems on a daily basis and are familiar with the common combinations used in industrial equipment.

Direct access to components and technical resources allows pumps to be configured accurately and delivered on realistic timelines.

LEARN OUR HISTORY

Frequently Asked Questions

What does "stock change" mean?

It refers to starting with a stocked base pump and changing the configuration using available components so the final pump matches the required flange, shaft, controls, and porting.

What types of pumps are covered in this program?

The program focuses on open loop piston pumps in the x20 series, commonly used in industrial and mobile hydraulic systems. These are 220, 420, or 620 pumps.

How quickly can a configured pump be supplied?

Lead time depends on configuration and component availability, but stocking base pumps and components allows many pumps to be supplied faster than waiting for a factory build. Typical lead times are usually a couple of days if all required components are in stock.

What information is needed to identify a pump?

A model code or tag is ideal, but photos, shaft details, control type, displacement, and mounting information are sometimes enough to determine the correct configuration.

Are all configuration combinations possible?

Some combinations are limited by the pump design and control options, so final configuration depends on compatibility between components.

Request a Quote

Quotes can be requested by emailing [email protected] or calling the number.

Call (561) 570-3190 Email to Request Quote