Our Hydraulic Engineers design each hydraulic power unit or sub-assembly to meet your application and circuit requirements, providing the optimal solution for your project.   


Once your power unit or sub-assembly is designed, we then assemble each unit with the highest quality components utilizing proven assembly standards and techniques.  Ralph W. Earl partners with industry leading manufacturers such as Eaton, Pall and Stauff.

Test and Documentation

Ralph W. Earl 100% tests every unit assembled in our facilities.  Our multi-point checklist includes operating at full pressure and flow, as well as confirming proper functionality of each circuit.

Our hydraulic units are supplied with documentation that includes AutoCAD drawings, schematics, manufacturers’ component documentation and start-up procedures.