STI 3030 Prepmaster Grinder/Polisher


The STI 3030 Prepmaster is ideal for polishing projects over 10,000 square feet. Despite its weight and size, this machine is versatile—easy loading and unloading by a single person. The best thing is that it is easy for anyone to operate and is perfect for polishing and restoring.

SKU: 40411 Category: Tag:

STI 3030 Prepmaster Grinder/Polisher

The STI 3030 Prepmaster is ideal for polishing projects greater than 10,000sf. This machine is versatile despite its weight and size. Easy one-man loading and unloading. Easy to operate. Limited operator fatigue (the operator doesn’t have to fight the machine). Interchangeable weight system converts for multiple applications. Variable speed drive for unlimited speed variation. Perfect for polishing or restoring.

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 on the application, and the standard water tank makes it easy to switch from dry to wet work. The 3030 is available in 230V and 480V. Uses four tool plates (included) and twelve tools.

STI 3030 Main Features

  • Working width: 30 in. (76cm)
  • 30 HP (22kW)
  • 1 or 3 phase
  • Available in 230V or 480V
  • 4 tool plates (included)
  • Uses 12 tools

Product Specifications

Motor30h.p. 3 phase
Power Source230 VAC 3 phase 60Hz
Current56 amps soft start
Motor RPM2625 @ 90Hz
Power Cord25 feet (4-4)
Vacuum Hose2″ x 25′ x Two
Weight1,064 lbs.
Tool RPM750rpm @ 90Hz
Pressure on Tools1010 w/weights
Tools AvailableAll
Dimensions81″ L x 30″ W x 50″ H
Weight1064 lbs
Dimensions81 × 30 × 50 in

Substrate Technology Inc


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