DONGLI / PRODUCT STUDIES

See the parts. Understand the motion.

From power transmission to wear components, three controlled studies show how the parts work together.

Illustrative mechanisms · not engineering CAD

Explore the W-446 assembly in 3D →

01 / POWER END

From rotation to reciprocation.

Follow one crank, connecting rod and crosshead as rotary input becomes linear output. One revolution, one reciprocating cycle.

FIG. 01WORKING RELATIONSHIP / STUDY
From rotation to reciprocation. Follow one crank, connecting rod and crosshead as rotary input becomes linear output. One revolution, one reciprocating cycle. A single-lane teaching model. W-446 views inform the component relationship; the horizontal display bed, proportions and single lane do not specify the pump’s internal configuration, gear ratio or stroke.
Play or scrub to inspect

02 / FLUID END

A valve lifts. The spring follows.

An open teaching frame reveals the guided valve body and the spring compressing between its fixed upper support and the moving body.

FIG. 02WORKING RELATIONSHIP / STUDY
Play or scrub to inspect

03 / WEAR COMPONENTS

The liner stays. The piston travels.

Cut away part of the liner to inspect the coaxial rod, piston hub and seal. The seal travels with the piston; the liner and supports stay fixed.

FIG. 03WORKING RELATIONSHIP / STUDY
Play or scrub to inspect

FROM UNDERSTANDING TO IDENTIFICATION

Understand the mechanism. Then identify the parts.

These studies explain component relationships. For identification, prepare the nameplate, model / serial number, original part numbers and site photos. State the quantity you need; our team must still review the edition and configuration.

Start a technical reviewSearch original manualsOpen the reference library

Illustrations built with Anatomy · MIT. Illustrations do not establish fitment or availability.