National GP 20 Grinder & Polisher
The GP series prepares concrete floors for topical coatings, overlayments, and adhesive floor coverings. It will efficiently polish floors to a high-gloss shine.
The GP series prepares concrete floors for topical coatings, overlayments, and adhesive floor coverings. It will efficiently polish floors to a high-gloss shine. Equipped with a gear-to-gear calibrated counter-rotational tooling matrix, the GP20’s counterbalanced, centrifugal-centered design does not pull side-to-side, lessening operator fatigue and increasing productivity.
A. LCD (liquid crystal display) control box includes variable speed and soft start features minimize blown circuit breakers; forward and reverse functionality results in cleaner consumables and more consistent tooling wear
B. 11-gallon, onboard water tank; water-dosing system supports wet-grinding slurry applications such as hardtroweled concrete, granite floors, and marble surfaces
C. Four removable side weights for additional head pressures; positioning weights into handle pockets reduces head pressure for easy mobility during transport
D. Adjustable powder-coated mill steel shroud; can be easily raised during wet-grinding applications or higher grit polishing
E. Additional transport wheels
F. Dual 3-inch vacuum ports
G. Each counter-rotating tooling holder is mounted on a Morflex coupler for easy maintenance and allows the tooling to follow surface contours for polishing or creating a uniform scratch pattern for coating applications
GP20 Production Rates
• Mastic removal: 475 square feet per hour/ 44 square meters per hour
• Thin-set removal: 525 square feet per hour/ 49 square meters per hour
• Mil-coatings removal: 325 square feet per hour/ 30 square meters per hour
• Concrete polishing: 925 square feet per hour/ 86 square meters per hour