Hydraulic Fluid Power Subject Matter Expert

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Specialties & Experience of this Expert Witness

General Specialties:

Engineering and Equipment & Machinery

Keywords/Search Terms:

Hydraulic Consultant, Hydraulic Systems, Pneumatic Systems, Hydraulic Pumps, Hydraulic Cylinders, Hydraulic Motors, Valves, Hydraulic Hoses, Hydraulic Manifolds, Motion Control, Design, Accumulators, Compressors, Schematics, Seals, Filtration, Pressure, Construction, Mining, Oil & Gas


Industrial Controls Technology, California State University Fullerton; Industrial Electrical Technology, Chaffey College

Years in Practice:


Additional Information

Nearly four decades of experience in the design, application, implementation, troubleshooting and service of complex hydraulic and pneumatic systems and related control components, including: • The use of standard and electrohydraulic components and circuitry in machine control • Integration of electronic devices for actuator control, including feedback and diagnostics • Manifold design, 3D solid modeling, and hydraulic circuit and component simulation and analysis • Hydraulic power unit (HPU) and closed-circuit hydrostatic transmission system design • Efficiency and throughput improvements for underperforming systems • Troubleshooting and repair of hydraulic/pneumatic machine control components and systems • Interpretation and implementation of ISO/SAE/ANSI/ASME fluid power standards • International Fluid Power Society Credentials: - Certified Fluid Power Systems Designer (CFPSD), February 2012 - Certified Fluid Power Accredited Instructor (CFPAI), August 2013 - Certified Fluid Power Electronic Controls Specialist (CFPECS), August 2011 - Certified Fluid Power Specialist (CFPS), November 1994 - Certified Fluid Power Pneumatic Specialist (CFPPS), November 2010 - Certified Fluid Power Master Technician (CFPMT), December 2012 - Certified Fluid Power Connector and Conductor (CFPCC), February 2011 About With nearly four decades of hydraulic and pneumatic application experience in a variety of roles and industries (including 24 years in Oil and Gas), Rance Herren is widely recognized by his peers as an authority in fluid power system design, troubleshooting, and failure analysis. Mr. Herren is an IFPS Accredited Fluid Power Instructor, a graduate of the Industrial Controls Technology program at California State University Fullerton, the Industrial Electrical Technology program at Chaffey College in Rancho Cucamonga, California, and holds multiple advanced fluid power certifications. In addition to speaking at industry trade shows and conferences, Mr. Herren has authored several articles in established trade publications on fluid power trends, the skilled trades gap, and the need for fluid power education and certification. He also serves on the Editorial Advisory Board for Power & Motion, a leading fluid power industry magazine. Mr. Herren is the former chair of the Fluid Power Hall of Fame and past President and board member of the International Fluid Power Society, where he continues as a lifetime member, technical contributor, collaborator, and advisor. Resume and Professional References available upon request.