Substrate Technology PREPMASTER Floor Grinders

Prepmaster Junior

This grinder is very aggressive, yet extremely easy to operate due to the smooth operation of the STI rotary gear system. In addition, the low price of the Prep/Master Jr. is very affordable and fits any project budget

Specifications

  • Working width: 23 in. (58cm)
  • 7.5 HP (5.6kW)
  • 220-240V Single Phase, 40A
  • 450 lbs. (204 kg) including pocket weights
  • 2 tool plates (included)
  • Uses 6 tools

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Prepmaster 2807

The STI-2807 floor grinding machine is designed for small to medium-sized commercial projects and residential garage finishing. This machine is the smallest of the P/M machine line, but still produces perfect results in grinding or polishing. Its 7.5HP 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.

Specifications

  • Working width: 28 in. (71cm)
  • 7.5 HP (5.5kW)
  • 1 or 3 phase
  • Available in 230V or 480V
  • 2 tool plates (included)
  • Uses 6 tools

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Prepmaster 2420

The STI-2420 floor grinding machine is designed for medium-sized commercial or residential projects. This machine combines the production capacity of a larger machine with the maneuverability of a smaller grinder. Its 20HP motor has strong torque and its variable speed drive easily adjusts to different grinding or polishing conditions for concrete, terrazzo, marble, and stone applications. Available in 230V or 480V.

Specifications

  • Working width: 24 in. (61cm)
  • 20 HP (14.7kW)
  • 1 or 3 phase
  • Available in 230V or 480V
  • 4 tool plates (included)
  • Uses 12 tools

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Prepmaster 3030

Our most popular model! The Prep/Master STI-3030 floor grinding machine is an ideal choice for project sizes up to 10,000 SF (1,000 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.

Specifications

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

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Prepmaster 4430

The Prep/Master STI-4430  floor grinding machine is an ideal choice for project sizes up to 20,000 SF (2,000m2). Quite unexpectedly for its 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.

Specifications

  • Working width: 44 in. (112 cm)
  • 30 HP (22kW)
  • 1 or 3 phase
  • Available in 230V or 480V
  • 8 tool plates (included)
  • Uses 24 tools

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