8274-4 Grinder



SKU: 8274-4: Grinder, Planetary System, 18", Hi-Power, 120 Volt

Product Description

The 8274-4 planetary grinder is the only grinder on the market offering 3 HP at 115V while operating at a 230V level.  With variable speed and a soft start to control it’s 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.

Width 20″ 51 cm
Disk Size 18.5″ 47 cm
Max. Height 52″ 132 cm
Min. Height 27.5″ 70 cm
Max. Length 75″ 191 cm
Min. Length 38.5″ 98 cm
Weight 388 lb 176 kg
Drum RPM 133.8  
Motor RPM 400-2000  
Motor Phase Single*  
HP 3 2.24 kW
Amps 15 or 20 – controllr can switch between both settings
Voltage 115  
Frequency 60 Hz  

Included with the 8274-4:

  • 401882: Morflex couplers
  • 9241: Quick-change magnetic-mount assembly: Three assemblies and three 73250 tooling holder mounting screws are required
  • 73135: 5/32″ Hex key
  • 9245: Velcro Adapter – mounts onto the 9241 quick-change magnetic assembly for using polishing pads and brazed disks. Three adpaters are required. 
  • 6280-401B: 7/32 T-handle wrench

Related Resources

National Flooring Equipment is always here with product recommendations, sound advice, and information on where you can try out our high-quality tools for yourself.

Simply fill out the form and we’ll be in touch!