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Substrate Technology, Inc. Prep/Master 4430 Floor Grinding Machine Working width: 44 in. (112 cm) For projects up to 20,000 SF (2,000m2) Electric motor: 30 HP (.. Product #: 434430230 based on 0 reviews

Prep/Master 4430 Floor Grinding Machine

Brand: Substrate Technology, Inc.
Weight: 1,460.00lb
Dimensions: 80.00in x 44.00in x 52.00in

Prep/Master® 4430 Floor Grinding Machine (Electric)

Ideal for Polishing Projects up to 20,000 SF (2,000 M2)

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.

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 4430 is available in 220V and 480V, as well as with a 25HP motor. Uses eight tool plates (included) and twenty-four tools.

  • 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

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 # 434430230 = 4430 (220V/230V)
Item # 434430480 = 4430 (380V/480V)
Machine Specs - Electric
Coverage 20,000 SF (2,000 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 80L x 44W x 52H in. (203 x 112 x 132cm)
Working Width 44 in. (112 cm)
Weight 1,460 lbs (662 kg)
Tools RPM 250-750 RPM variable
Tools Needed 24
Tools Attachment Style EG Attachment System
Vacuum Hose Connection 3 in. (76 mm) (sold separately)
Recommended Vacuum PM3003GP
Production Rates
Mastic Removal 725 SF (70 m2) per hour
Thin Set Removal 725 SF (70 m2) per hour
+/-25 Mil Coatings 575 SF (60 m2) per hour
Concrete Polishing 5,025 SF (500 m2) per hour
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