Prep/Master 2807 Electric

Electric - for Projects up to 2,000 SF / 186 m2

Prep/Master® 2807 (Electric Model)

Ideal for Polishing Projects up to 2,000 SF/ 186 M2

The STI-2807 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.

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. Available in 230V or 480V. Uses two tool plates (included). Recommended for project sizes up to 2,000 SF (186m2).

2807 220V/230V = Item #432807230
2807 380V/480V = Item #432807480

Motor 7.5 HP - 3 phase | 5.5kW
Power Source 220/230 VAC 1 or 3 Phase, 60Hz
380/480 VAC 3 Phase, 50-60Hz
Weight 743 lbs | 337 kg
Dimensions 57"L x 28"W x 51"H
145cm x 71cm x 130cm
Tools Needed 6
Tools RPM 300 RPM to 750 RPM variable
Tools Attachment Style EG Proprietary Attachment System
Vacuum Hose Connection 3 in. (76mm) (sold separately)
Recommended Vacuum IMPACTS Dustcom 3003AR (300 CFM) or equivalent
Power Cord
30 ft. | 9m (8-4)

Production Rates
Mastic Removal 375 SF /35 M2 per hour
Thin Set Removal 425 SF /40 M2 per hour
+/-25 Mil Coatings 225 SF /21 M2 per hour
Concrete Polishing 575 SF /53 M2 per hour

2807 Machine Manual
Download Machine Manual
2807 Sales Flyer
More Information
Don't Forget Your Repair Kit for Emergencies!
Repair Kits for Emergencies

Prep/Master 2807 & 2818LP Grinder Machines


Contractors Choose Prep/Master® for its Durability!


Leveling the Head of the STI-2807