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Substrate Technology, Inc. Prep/Master 3030 Floor Grinding Machine Our most popular model! Working width: 30 in. (76 cm) For projects up to 10,000 SF (1,000m2) .. Product #: 433030230 based on 0 reviews

Prep/Master 3030 Floor Grinding Machine

Brand: Substrate Technology, Inc.
Weight: 1,338.00lb
Dimensions: 86.00in x 30.00in x 52.00in

Prep/Master® 3030 Floor Grinding Machine (Electric)

Ideal for Polishing Projects up to 10,000 SF (1,000 M2)

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.

The moveable pocket weight system adjusts head pressure depending upon 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.

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

See the STI-3030 & 3038LP Prep/Master Floor Grinding Machines in Action


Contractors choose Prep/Master for its Durability. Here is how STI does it!

How to Perform an S-Curve for Grinding and Polishing Perfection

Item Numbers
Item # 433030230 = 3030 (220V/230V)
Item # 433030480 = 3030 (380V/480V)
Machine Specs - Electric
Coverage 10,000 SF (1,000 m2)
Power Source 220/230 VAC 1 or 3 Phase, 60Hz or 380/480 VAC 3 Phase, 50-60Hz
Motor 30 HP - 3 phase (22kW)
Power Cord 30 ft. (9m) | 6-4
Dimensions 86 x 30 x 52 in. (218 x 76 x 132 cm)
Working Width 30 in. (76 cm)
Weight 1,338 lbs. (607 kg)
Tools RPM 300-750 RPM variable
Tools Needed 12
Tools Attachment Style EG Attachment System
Vacuum Hose Connection 3 in. (76 mm) (sold separately)
Recommended Vacuum PM3003GP
Production Rates
Mastic Removal 600 SF (60 m2) per hour
Thin Set Removal 600 SF (60 m2) per hour
+/-25 Mil Coatings 425 SF (40 m2) per hour
Concrete Polishing 1,200 SF (120 m2) per hour
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