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STI 3038 Propane Prep/Master Grinder

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  • STI 3038 Propane Prep/Master Grinder

 Product Description

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

The STI-3038LP Propane floor grinding machine has the same robust design as the model STI-3030, but is powered by a 38HP Kawasaki propane motor. Despite its weight and size, this grinder is extremely easy to operate due to the smooth operation of the STI rotary gear system.

It features a movable pocket weight system for multiple applications and is recommended for projects up to 10,000 SF (1,000 m2). Its variable speed drive easily adapts to different grinding or polishing conditions for concrete, terrazzo, marble, and stone applications. Uses four tool plates (included).

Working width: 30 in. (76cm)
38HP Kawasaki motor
Uses propane fuel
4 tool plates (included)
Uses 12 tools


  • Machine Specs - Propane
  • Coverage; 10,000 SF (1,000 m2)
  • Motor; Kawasaki 38HP LP
  • Motor RPM; 2,200 - 3,650 RPM
  • Dimensions; 86 L x 30 W x 48 H in. (218 x 76 x 122cm)
  • Working Width; 30 in. (76 cm)
  • Weight; 1,084 lbs (492 kg)
  • Tools Needed: 12
  • Tools RPM: 366-500 RPM
  • Tools Attachment Style: EG Attachment System
  • Vacuum Hose Connection: 3 in. (76 mm)
  • 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

 Warranty Information

Prep/Master® Warranty

Substrate Technology guarantees that its machines and products are without manufacturing defects. The warranty period on machines is one (1) year from the date of sale and the variable speed drive carries a two (2) year warranty from the date of sale. Substrate Technology will replace any part that is defective at its own cost within the warranty period. This warranty does not cover wear items or instances of abuse or neglect.

 Other Details

Kawasaki 38 HP LP
Motor RPM:
2,200 - 3,650 RPM
Vacuum Hoses (sold separately):
3 in/ 76 mm x 25 ft/ 8 m x Two
860 lbs | 392 kg
Tool RPM:
366 RPM to 500 RPM
Pressure on Tools:
812 lbs/ 369 kg with weights
Tools Available:
80" L x 30" W x 53" H / 203 cm x 76 cm x 132 cm
Cleaning Path:
30"/ 76 cm x 52"/ 132 cm sweep
Mastic Removal:
550 sq ft/ 51 sq m per hour
Thin Set Removal:
550 sq ft/ 51 sq m per hour
Mil Coatings Removal:
375 sq ft/ 35 sq m per hour
Concrete Polishing:
1,200 sq ft/ 111 sq m per hour
Product Data Sheet:

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