Niagara Machine
GRINDERS
Prepmaster diamond grinders effectively prepare concrete surfaces, leaving the flooring surface ready for applications of new coatings, tile, or carpet. The grinders quickly cut through the bulk of heavy, built-up adhesives, elastomeric coatings, water membranes and other coatings. They flatten and smooth the surface, removing minor imperfections. Models may be configured to perform both milling and grinding, or simply grinding. A separate dust collector allows the system to operate completely dust-free.
Download the full current Prepmaster catalog in PDF format.
STI 2807
VIDEO: LITERATURE
Ideal for projects less than 5,000 sq. ft.
Light weight and gets into small areas
Easy one man load/unload
Moveable weight system for multiple applications
Variable speed drive for unlimited speed variation
STI 2420
VIDEO: LITERATURE
Ideal for polishing projects greater than 2,000 sq. ft.
Versatile machine
Easy one man load/unload
Moveable weight system for multiple applications
Variable speed drive for unlimited speed variation
STI 3030
VIDEO: LITERATURE
Ideal for polishing projects greater than 2,000 sq. ft.
Versatile machine
Easy one man load/unload
Moveable weight system for multiple applications
Variable speed drive for unlimited speed variation
STI 4430
VIDEO: LITERATURE
Ideal for projects greater than 20,000 sq. ft.
Versatile machine
Easy to transport and load
Quick disassembly for passage through 3-ft. doorways & loading
Moveable weight system for multiple applications
Variable speed drive for unlimited speed variation
STI-PM431
VIDEO: LITERATURE
Ideal for projects less than 1,000 sq. ft.
Light weight and gets into small areas
Easy one man load/unload
Moveable weight system for multiple applications
Variable speed drive for unlimited speed variation

STI-2417
Ideal for projects less than 2,000 sq. ft.
Motor: Kawasaki 17HP LP 3,650 rpm
Vacuum Hose: 3-inch x 25 ft.
750 lbs.
Tool RPM: 500 rpm @3,000 rpm
Pressure on Tools: 630 lbs. w/weights
74"L x 30"W x 53"H
Cleaning Path: 12.5" x 43" sweep
Planet Vac or equivalent recommended
Mastic Removal Rates: 450 sq.ft./hr.
Thin Set Removal Rates: 500 sq.ft./hr
Mil Coatings Removal Rates: 200 sq.ft.
Concrete Polishing Rates; 1,000 sq.ft./hr per step
STI-2817
Ideal for projects less than 5,000 sq. ft.
Motor: Kawasaki 17HP LP 3,650 rpm
Vacuum Hose: 3-inch x 25 ft.
585 lbs.
Tool RPM: 500 rpm @3,000 rpm
Pressure on Tools: 485 lbs. w/weights
72"L x 28"W x 53"H
Cleaning Path: 12" x 56" sweep
Planet Vac or equivalent recommended
Mastic Removal Rates: 350 sq.ft./hr.
Thin Set Removal Rates: 400 sq.ft./hr
Mil Coatings Removal Rates: 200 sq.ft.
Concrete Polishing Rates; 400 sq.ft./hr per step
ECO/PREP 500
5 HP, Variable Speed Drive
220V/1 Phase
15 amps
1,575 rpm
Vacuum Hose: 3-inch x 25 ft
350 lbs.
41"L x 20"W x 42"H
Cleaning Path: 25" x 25" sweep
Planet Vac or equivalent recommended
Mastic Removal Rates: 200 sq.ft./hr.
Thin Set Removal Rates: 200 sq.ft./hr
Mil Coatings Removal Rates: 50 sq.ft.
Concrete Polishing Rates; 300 sq.ft./hr per step

Niagara Machine, Inc. • 325 W. Front Street • Erie, PA 16507 • Phone: (814) 455-8838 • Fax: (814) 454-0160

TOLL FREE 1-800-622-2048 • Send E-mail