Technical specs may include optional equipment that is not included with all units.
New Aztec UltraGrind 30" Concrete Grinder with 18 HP Kawasaki
Our Take (from the SES Sales Team)
“The UltraGrind is a propane concrete and terrazzo grinder for crews who are tired of running cords and renting generators. A Kawasaki 603 cc engine drives a gear-driven planetary head across a 30 in path with up to 780 lb of grinding pressure, and Aztec rates it at 800 to 1,000 sq ft per hour. That combination of weight and power is what lets it handle tough grinding, while the quick-change plate system makes switching between metal and resin bond diamonds fast. An 8 gal water tank is on board for wet work, dual vacuum ports connect to the UltraVac for dust control, and a locking transport wheel with an adjustable telescoping handle makes a 930 lb machine manageable to move and load. Aztec also offers an optional spray mist skirt that knocks dust down without creating a slurry. If your work includes edges along walls and under shelving, add the UltraEdge. Together with the UltraVac, they make up Aztec's three-piece WorkSmart cordless grinding, polishing and edging system.”
A 30 in propane grinder and polisher for concrete and terrazzo
The Aztec UltraGrind is a gear-driven planetary concrete and terrazzo grinder and polisher. It grinds a 30 in (76.2 cm) path with up to 780 lb (353.8 kg) of grinding pressure, and Aztec rates it at 800 to 1,000 sq ft (74.3 to 93 m²) per hour.
A Kawasaki 603 cc propane engine with a 12 V battery start powers it, so it needs no cords or generators. An 8 gal (30 L) water tank, dual vacuum ports and a quick-change plate system round it out.
Condition: New.

What you get
Ready for the open floor
Dust control, wet or dry
Features
Built for heavy grinding
- ✓Gear-driven planetary head with up to 780 lb (353.8 kg) of grinding pressure
- ✓Quick-change plate system for fast switching between metal and resin bond diamonds
- ✓Dual vacuum ports for UltraVac connection
- ✓Adjustable telescoping handle and locking transport wheel
- ✓Steel body with a removable panel for easy cleaning
The system
Aztec WorkSmart concrete system
| Machine | Job in the system | Key spec |
|---|---|---|
| UltraGrind | Grinds and polishes the open floor | 30 in (76.2 cm) path, up to 780 lb (353.8 kg) grinding pressure |
| UltraEdge | Grinds and polishes edges, along walls and under shelving | 13 in (33 cm) head, within 1/4 in (0.6 cm) of walls |
| UltraVac | Collects grinding dust from both machines | 300 CFM, 28 sq ft (8.5 m²) MicroClean filter |
Specifications
Aztec UltraGrind at a glance
| Models | UltraGrind 30 propane grinder |
|---|---|
| Grinding width | 30 in (76.2 cm) |
| Work rating | 800 to 1,000 sq ft/hr (74.3 to 93 m²/hr) |
| Grinding pressure | Up to 780 lb (353.8 kg) |
| Drum speed range | 475 to 735 rpm |
| Head speed range | 950 to 1,470 rpm |
| Water tank | 8 gal (30.3 L) |
| Engine | Kawasaki 603 cc, 18 hp block |
| LPG horsepower | 17.19 hp |
| Engine speed range | 2,200 to 3,400 rpm |
| Fuel system | Custom propane carburetor |
| Propane tank | Steel tank standard; OPD steel tank optional |
| Starter | 12 V battery |
| Oil safety system | Automatic shut-off |
| Sound level | 86 to 87 dB |
| Dimensions (L x W x H) | 79 x 30 x 46 in (200.7 x 76.2 x 116.8 cm) |
| Machine weight (with water) | 930 lb (421.8 kg) |
| Shipping weight | 1,015 lb (460.4 kg) |
| Optional | Diamond package (114 lb, 51.7 kg); spray mist skirt; OPD steel tank; Blue Sky certified engine |
| Green certifications | EPA, LEED, GS-42 |
| Model Numbers | 040-1 (UltraGrind) |
Technical specs may include optional equipment that is not included with all units.
Questions
Aztec UltraGrind: common questions
How much floor can it grind in an hour?
Aztec rates the UltraGrind at 800 to 1,000 sq ft (74.3 to 93 m²) per hour. Actual rates depend on the concrete, the diamonds and how much material you are removing.
Can I grind wet and dry?
Yes. It has an 8 gal water tank for wet work and dual vacuum ports that connect to the UltraVac for dry dust control.
Are diamonds included?
Aztec offers starter and specialty packages for diamonds, chemicals, the propane vacuum and hand grinders. Ask our team what tooling you need for your floors.
How do I move a 930 lb machine?
A locking transport wheel and an adjustable telescoping handle are built in for moving and loading.
What handles the edges?
The Aztec UltraEdge grinds within 1/4 in of walls and reaches under low shelving, and its plate system is interchangeable with the UltraGrind.
Not sure the UltraGrind fits your concrete work?
Tell our team about the floor, the finish you want and the job, and we will help you decide if this is the right machine.
