The award winning UltraGrind is Aztec’s propane-powered, planetary head, gear driven, concrete grinding and polishing machine. The UltraGrind has been designed for the more aggressive concrete floor grinding and polishing applications, where the goal is to both remove material and highly polish concrete floors. The UltraGrind has industry-standard 2-inch exhaust ports for concrete dust vacuums. The Aztec UltraGrind is powered by the new 20hp Kawasaki 603cc engine, featuring a heavy duty canister air filter. All of Aztec’s propane machines are CE, EPA/CARB, LEED and GS-42 certified and powered by the PurePowerLPH 600 Series engine, as part of the WorkSmart TM concrete and terrazzo system.