STI GRINDING AND POLISHING MACHINES

Substrate Technology is the leading provider of world class machinery and diamond tooling. STI encourage you to check out the full range of concrete surface preparation such as concrete polishing, marble restoration, & terrazzo restoration products and more we offer.​​

STI-2807 Prep/Master​​
STI-2807 Prep/Master​​ ​Ideal for projects less than 5,000sf, Popular machine with residential contractors, Lighter weight and smaller footprint gets into smaller areas, Easy one man loading and un-loading, Easier to operate than planetary gear machines, The operator doesn't fight the machine - He runs it, Moveable weight system for multiple applications, Variable speed drive for unlimited speed variation
STI-2420 Prep/Master​​
​Ideal for polishing projects greater than 2,000sf, Versatile machine despite its weight and size, Easy one man loading and un-loading, Easier to operate than planetary gear machines, The operator doesn't fight the machine - He runs it!, Movable weight system for multiple applications, Variable speed drive for unlimited speed variation.
STI-4430 Prep/Master
​Ideal for polishing projects greater than 20,000 Sq. Ft., Versatile machine despite its weight and size Easy to transport and load, Quick disassemble for passage through 3' doorways and loading, Easier to operate than planetary gear machines, The operator doesn't fight the machine - He runs it, Movable weight system for multiple applications Variable speed drive for unlimited speed variation
STI-3030 (Electric Model)
The Prep/Master STI-3030 is an ideal choice for project sizes up to 10,000 SF (929 m2). Despite its heavy weight and size, this grinder is extremely easy to operate due to the smooth operation of the STI rotary gear system. Its 30HP motor is built to last and its variable speed drive easily adapts to different grinding or polishing conditions for concrete, terrazzo, marble, and stone applications. The moveable pocket weight system adjusts head pressure depending upon application and the stand