About

About Us

PSI History: In the Beginning

PSI was founded in April 1998 in Rockford, Illinois as a power unit manufacturer and systems integrator.  We formed our company because of the market demand for services unique to each of our customers. 


Customers told us they needed fluid power, motion control components and systems that were easy to operate and that met their individual needs.  They also wanted a company to stand behind their product – not just during design, building and start-up, but for the long term.


We built PSI to answer this need.  Although we have grown and changed through the decades, we remain committed to our mission and to our customers.

  • Certified Fluid Power Specialists
  • Over 75 years of team experience
  • Member: Fluid Power Society, ASME
  • ISO 9000 compliant

The PSI Difference:

How We Work with You

We focus on hydraulic drives and systems, lubrication oil conditioning and transfer, and process control. We are all about design, manufacturing, service, and support of our equipment.


Unlike typical hydraulic distributors, we support manufacturing rather than expecting manufacturing to support us. We represent all of the major hydraulic component manufacturers and use the best solution for an application, not just what we stock.


We also provide application and integration services beyond fluid power and process systems. Starters, PLC, data acquisition, conveyor, roll mills, high speed cameras, and robotics are in  our wheelhouse, as are mobile hydraulics and lube systems.


We continue our work with heavy mining equipment manufacturers and their dealers by enhancing service and support of their machinery.



Work With Us

Vendor Partnerships

We are grateful to have many long-standing vendor partnerships. Here are a few of our long time partners.

BSF Logo
DMIC Logo
Donaldson Logo
Hartmann Logo
BSF Logo
DMIC Logo
Donaldson Logo
Hartmann Logo

Leadership Team

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Our team of experts is ready to take on your project.

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