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8274-4 Planetary Floor Grinder

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The 8274-4 is the only grinder on the market offering 3 HP at 115 volts while operating at a 230-volt level.

With variable speed and a soft start to control its amperage draw, the 8274-4 adjusts to the needs of small or large jobs. This machine is well suited for removal of thin-set, coatings, adhesive, prepping concrete for overlays or coatings, and polishing.

The grinder comprises of Dual rear vacuum ports, removable handle and weights for easy transport and has a three-part adjustable angle handle.

Choose from 15A or 20A circuit-breaker settings with a convenient switch on the side of the controller; the 15A selection limits motor draw to 15 amps; the 20A selection pulls up to 20 amps.

Forward and reverse directional controls increase tooling productivity with cleaner consumables and more even wear and variable speed control.

Flip-style weights for added or decreased head pressure.

18-inch grinding path; uses National's patented self-tensioning, single-belt design to prepare concrete surfaces to a 3000-resin shine.

Adjustable velcro dust guard lets the machine operate within an eighth of an inch of walls and promotes nearly dustless operation.

Grinder head rotates 90 degrees for easy tooling change access; Morflex couplers, polishing undulating concrete surfaces or creating a uniform scratch pattern for coating applications; operates a complete dry grind and polish system to eliminate messy and hazardous slurry.

 
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