Substrate Technologies (STI) Prep/Master Jr Floor Grinding Machine (Electric)
Flooring Applications – Concrete, Terrazzo
Ideal for Polishing Projects up to 1,000 SF (100 M2)
The Prep/Master® Jr. floor grinding machine by Substrate Technology (STI) works extremely well in small, hard-to-reach areas that requires a more compact design – perfect for residential garage floors and basements.
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.
- Working width – 23 Inches
- Motor - 7.5 HP Variable Speed Drive
- 220-240V Single Phase, 40A
- 450 lbs. including pocket weights
- 2 tool plates
- Uses 6 tools total ( 3 per plate)
- Dimensions: 50” L X 23” W X 48” H
- Vacuum Hose Connection – 2”
Prep Master Junior Features:
- Heavy head pressure for a better grind and polish – 60% of its weight is on the head!
- Magnetic LED Light to illuminate front of machine or behind machine on the cutting path
- Easy disassembly - machine separates into two sections for easier transportation
- (Grinding head = 260 lbs. / Handle = 130 lbs. / Two Pocket Weights = 30 lbs. each)
- Screw-in Carrying Poles for two-three person lifting
- 8-gallon (30 liters) water tank
- On-board  USB Charger & Phone Carrier
Diamond Systems for P/M Junior - EGT, CLC, TPS
