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The Classic Green Grinder

Concrete Grinder

Propane / Planetary / Productive

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Product Download

Green Grinder Technical Data Sheet
Green Grinder Parts Manual 
Propane Safety Awareness
Silica SDS Sheet
Equipment Lease

40 percent faster. The Green Grinder is designed to work quickly.  Roll it off the trailer and begin grinding immediately – thanks to clean-burning, quick drop-in propane power.  All-steel frame construction with a huge 27hp engine drives a design of nearly 800lbs of head pressure, which ensures you have not only the weight and head pressure for coating removal and concrete profiling, but also the speed and RPMs for efficient wet honing and polishing.  Onboard sensors provide hours and RPMs and safety features including an automatic emissions sensor with shutdown.  An 11-gallon water tank helps to eliminate any airborne silica dust as will the built-in vacuum port.  Quick change plates promote even abrasive wear and quick field changes cutting downtime on every PHP (Profile. Hone. Polish.) project.

Concrete Grinding Equipment 

Green Grinder


The Green Umbrella Green Grinder is the next step for the industry’s oldest and most reliable propane-powered, planetary concrete grinder. Crafted with a durable, self-contained mining industry-inspired gearbox powered by a 22hp EPA/CARB certified engine.

The Green Grinder can tackle any element of concrete surface refinement from coating removal to high rpm polishing.  A flexible frame enables this machine to follow the contour of any concrete surface regardless of Ff or Fl numbers on new or existing concrete.

Equipped with a standard quick-change system to promote even abrasive wear and quick field changes cutting downtime on PHP projects.

Telescopic Handle 

Transport Wheel

Water or GreenCut capable liquid tank

Cut Your Labor

Cut concrete in any phase – Profile, Hone or Polish from 600 – 1,600 sq.ft. per hour. No Electricity required; no 3-phase install from a certified electrician and no generator set-up.  Cordless – keeping work areas free and workers working without unnecessary support roles.

Cut Your Downtime

Propane power enables you to be working in any phase of construction without reliance on electrical power.

Cut Your Environmental Impact

Propane-powered making use of a clean & renewable fuel source.  Designed for wet cutting to eliminate hazardous silica dust.  Meets LEED Maintenance Requirements.

Green Umbrella Concrete outfitters

Tech specs

Green Grinder

  •  Production: 800 ft2–1,300 ft per hour-double pass
  • Drum Speed:1,410 rpm
  • Head Speed: 840 rpm counterclockwise
  • Head Pressure: 785 pounds 
  • Grinding Width :30 inches 
  • Total Weight: 1,385 pounds 

Green Umbrella Concrete outfitters

Features & Benefits

Green Grinder

  • Heavy Duty Grinder for PHP or Coating Removal
  • ESDS (Emissions Shut Down System)
  • Uniquely designed GreenGear* Gearbox
  • Designed to Cut Wet
  • Dry Polish Equipped Vacuum Port
  • Cordless
  • Endless Run time
  • Zero Indoor Air Quality Issues
  • Catalytic Muffler (EPA/CARB Certified)
  • Flexible frame construction w/ floating head
  • Uniquely Meets LEED Maintenance Requirements
  • Versatile (Profiles. Hones. Polishes) NO NEED FOR TWO MACHINES
  • Quick Change Abrasives
  • Durable Gearbox
  • EPA & CARB Certified
  • Simple Contractor Design
  • Easy Onsite Access for Maintenance & Repair 
  • The Industry Leading Complete System Grinder
  • 1,300 lb. machine with nearly 800 lb. head pressure

Cut the Cord!

Propane fuels the 27 hp engine that is certified to meet EPA and CARB requirements with an ESDS (Emissions Shut Down System) and clean burning catalytic muffler. 

Propane tanks drop in for quick and easy changes.  A truly industrial piece of equipment exceeding the run time of any other grinder on the market, by THOUSANDS of hours.  The Green Umbrella Green Grinder is a responsible alternative for  professionals concerned about the environmental impact of the concrete polishing process.  The Green Grinder eliminates the hazards of cutting dry and is powered by EPA and CARB proven powerful propane engines. 

Propane power eliminates the potential hazard of water meeting electricity. The wet process uses water to cool abrasives and eliminate  dust. Water reduces ​abrasive friction and acts as a lubricant, thereby increasing the life of profiling, honing and polishing abrasives.

Water + 800 lbs Head Pressure + Cutting Edge = Refinement

Additional Feature: 

The Green Grinder is designed specifically for wet grinding and is outfitted with an 11- gallon water tank.  Equipped with a standard quick-change system to promote even abrasive wear and quick field changes cutting downtime on GHP projects.

The wet process eliminates airborne crystalline silica dust and its potential health hazards such as silicosis due to the inhalation of these dangerous airborne particulates improving IAQ (Indoor Air Quality). Propane is one of the cleanest burning fossil fuels, cutting emissions and leaving a smaller carbon footprint than a typical electric model.

The Hidden Issues – Abrasive Cutting with Electric Equipment


Hurry Up and Wait!  Electric powered machines generally require 3-phase power wired by a certified electrician and drawing considerable power from the facility.  Green Umbrella recommends the use of renewable resources such as propane-powered, clean-burning EPA & CARB certified engines. 



Hidden Cost to Ownership:  Calling upon the facility maintenance team and requesting an electrician establish suitable power is just the start.  Each electric machine will draw substantial kilowatts of energy during the course of the project.

Sample Electric Grinder Motor (40 Amps – 460 Volts) – 31.8 kilowatts x $0.12 cents per kWh = $3.82 per unit per hour.  Average daily operating cost (8 hour day) – $30.53 per machine paid by facility ownership daily.

Sample Project: 5-day project using 2 electric machines will total $305.30 in “hidden cost” to ownership.


Equipment that is NOT Designed to Cut Wet:  While Green Umbrella’s fleet of grinders are designed to cut wet, electric grinders are not.  Water + Electricity do not mix!  Eliminate danger and protect workers all without possibly introducing harmful silica dust into the air – by using equipment designed for wet profile, hone and polish work.  Propane or Diesel-powered machines eliminate the potential hazard of water meeting electricity.  

Expensive Portable Generators and Cords:  Not required when using Green Umbrella grinders.  Construction sites are filled with potential hazards.  Eliminate the potential for a trip and fall by eliminating the use of cords while profiling, honing and polishing. Choose cordless propane equipment.


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(844) 200-7336

Office Location

20 Jetview Drive 
Rochester, NY 14624

Open Hours

M-F: 9am – 5pm