About Us


DAN LUBELL, Owner, Oil-Free Machinery, LLC.

Dan has worked with industrial and  aerospace turbomachinery, and became specialized in oil-free and high  speed system rotordynamics, bearings, and production transitions with  over 20 years of hands-on R&D experience. Dan has worked with  industry leading technology in this area at Capstone Turbine, Honeywell  Aerospace, and Calnetix Technologies. He has been a significant  contributor to several new centerline designs for both conventional and  oil-free systems and is as comfortable with design and test as he is  with analysis. Dan has a Masters of Science in Mechanical Engineering  which he earned at the Texas A&M University Turbo Lab in College  Station, Texas. Prior to that, he received a Bachelors in Engineering  Science from Trinity University in San Antonio, Texas. Dan has published  papers on squeeze film dampers and foil bearing developments for micro  gas turbines.  

Dan Lubell's Linked-In

Tony Maffeo, Owner of HS Spindles, LLC.

Tony has designed high speed rotating  equipment for over ten years in applications such as hydro-electric  turbines, atomizers, steam turbines, and CNC spindles. He holds a  bachelors in  Mechanical Engineering Technology degree from UNC  Charlotte. He also is an EIT since 2005. He is very proficient in  Autodesk Inventor and SolidWorks. Tony is very knowledgeable in angular  contact bearing designs and troubleshooting, dynamic balancing and  stress analysis on rotating equipment.  

High Speed Spindles

Our Mission

To support the integration of your technology with oil-free bearing technologies.


There  are several sources for foil bearings.  Most do not have  COMMERCIAL SYSTEM and MASS PRODUCTION experience.  There are not many  experienced engineers who are able to help you reduce the risk  of integrating these new technologies with your proven technologies.  We  present the combination of formal theory with valuable hands-on  experience, bringing all the elements together.  From risk assessment  to design reviews to complete machine design, Oil-Free Machinery  complements your team.