Onfloor

Onfloor is a brand of floor grinding and surface preparation machines produced by Onfloor Technologies, LLC, a United States–based manufacturer. The Onfloor line focuses on portable, walk-behind grinders designed for concrete preparation, coating removal, and surface leveling, as well as applications involving terrazzo and stone surfaces. The range typically includes models with working widths from about 12 to 22 inches, catering to both professional contractors and dedicated DIY users.

Design and operation aspects commonly associated with Onfloor machines include a compact, maneuverable form factor intended for use in tight spaces and on smaller projects. Many models employ a planetary or multi-disc grinding head and are powered by electric motors, available in single-phase or three-phase configurations to suit different work environments. The equipment accepts standard diamond tooling used for concrete and stone, and many units offer compatibility with dust-extraction systems to help control debris and silica exposure on job sites.

Applications for Onfloor grinders span residential, commercial, and industrial settings. Typical tasks include removing old coatings and adhesives, leveling high spots, smoothing rough concrete, and prepping surfaces for new coatings or polishing systems. The brand emphasizes versatility, with machines used for tasks ranging from initial surface preparation to finer grinding and finishing.

Market presence for Onfloor products is global, with distribution through dealers, rental yards, and online retailers. The equipment is regarded as a practical option for contractors seeking portable, user-friendly floor preparation machines that can handle a variety of substrate types and project scales.