8 best floor grinders

Floor grinders are power tools used in construction and renovation projects to prepare, smooth, and polish concrete and other hard surfaces. They are an essential tool for tasks such as grinding down uneven concrete surfaces, removing coatings like paint or epoxy, and achieving a polished finish on floors. Floor grinders are typically larger and more robust than handheld angle grinders, making them suitable for heavy-duty applications.

Key features and information about floor grinders include:

  1. Types of Floor Grinders: There are generally two types of floor grinders - single-disc and dual-disc grinders. Single-disc grinders have a single rotating disc with grinding stones or diamond segments, while dual-disc grinders have two discs that rotate independently.Dual-disc grinders are often more efficient for larger projects.

  2. Power Source: Floor grinders can be powered by electricity, gasoline, or propane. Electric models are commonly used indoors due to their lower emissions, while gasoline or propane-powered ones are suitable for outdoor applications.

  3. Grinding Heads: Floor grinders use various types of grinding heads or attachments. Diamond grinding segments are the most common, as they are highly effective for grinding and polishing concrete surfaces.

  4. Dust Collection: Many modern floor grinders come equipped with dust collection systems to minimize airborne dust and debris during operation. This is crucial for maintaining a safe and clean working environment.

  5. Variable Speed: Some floor grinders offer variable speed settings, allowing operators to adjust the grinding speed to achieve different finishes and levels of smoothness.

  6. Size and Weight: Floor grinders are heavy machines, so their size and weight can vary significantly. Smaller models are easier to transport and maneuver in tight spaces, while larger units are suitable for larger surface areas.

  7. Safety Precautions: Using floor grinders requires proper safety precautions, including wearing protective gear such as safety glasses, ear protection, and dust masks. Operators should also be trained in their safe operation.

  8. Applications: Floor grinders are commonly used in commercial and industrial settings, including warehouses, factories, construction sites, and retail spaces. They are versatile tools suitable for various tasks, including surface preparation, leveling, and polishing.

  9. Maintenance: Regular maintenance is essential to keep floor grinders in good working condition. This includes cleaning the machine after each use, inspecting and replacing grinding segments when worn, and checking for any loose or damaged parts.

  10. Cost: The cost of floor grinders can vary widely depending on their size, power source, and features. Smaller electric models are more affordable, while larger gasoline or propane-powered grinders tend to be more expensive.

Floor grinders are valuable tools for professionals in the construction and flooring industries, as they can significantly speed up surface preparation and finishing tasks while delivering high-quality results.

Below you can find our editor's choice of the best floor grinders on the market
  

DEWALT Angle Grinder Tool, Paddle Switch, 4-1/2-Inch, 11-Amp (DWE402)

DEWALT

Based on 2 reviews Check latest price

Product description

The DEWALT DWE402 4-1/2" 11-amp Paddle Switch Angle Grinder features the next generation 11 Amp AC/DC 11,000 rpm motor, which provides the best power to weight/size ratio available (1.8HP). It's Dust Ejection System provides durability by ejecting damaging dust and debris particles that enter the tool. The oversized brushes provide 2X brush life over previous model (D28402) and the large spiral bevel gear provides long transmission life. This grinder offers a One-Touch guard that allows for 360 degree rotation of the guard with a single action. The Quick-Change wheel release allows tool free wheel removal without need for a wrench. It has a top mounted and protected spindle lock button that maximizes the depth of cut without compromising durability. The uniquely small gripping surface in this power class allows for the best comfort available in this class. It also offers a newly designed side handle which provides excellent ergonomics while oversized threading provides durability. Auto-off brushes shut the tool down when the brushes need replacing to avoid tool damage and a paddle switch with safety lock-off prevents accidental start up. Matching wheel flanges allow the use of common accessories. Includes: 2-position side handle, 4-1/2" One-Touch (T27) Guard.. Cord Length- 72 inches

  • Plastic / Metal
  • Imported
  • 11 Amp AC/DC 11,000 rpm motor which provides the best power to weight/size ratio available
  • Spindle Size-5/8"-11 in, 1400 W, Corded Power Tool,
  • Tool Length-12 in, Wheel Diameter-4-1/2-Inch
  • Includes-One-Touch Guard,2-Position Side Handle,Wrench
  • Dust Ejection System provides durability by ejecting damaging dust and debris

User questions & answers

Question: Does the product come with a Type 1 guard necessary for cutting
Answer: No, I would recommend a tiger disc by Weiler or a zip flap wheel from Norton. You can get these in a grit you need.
Question: Does it comes with a case
Answer: There is one disk.
Question: This says 11,000 RPM which wheels do i purchase
Answer: 25
Question: Does the paddle switch lock on
Answer: Width & length 8 5/8” x 8 5/8”. Front depth 5 1/2”. Rear depth 4”

Product features

DEWALT DCH273B 20V Max* XR Brushless 1” L-Shape SDS Plus Rotary Hammer
Product Description

The DCH273B 20V Max XR Brushless 1” Rotary Hammer is a high-performance drill that is powered by a DEWALT brushless motor and a durable German engineered mechanism that delivers 2.1 joules of impact energy. Coupled with it's light weight design and SHOCKS Active Vibration Control technology, this hammer is ideal when used in overhead applications. The DCH273B is Dust Extraction ready for the D25303DH

DEWALT Concrete Surface Grinder Kit, 5-Inch (DWE46253)

DEWALT

Based on 100 reviews Check latest price

Product description

This 5 in. Brushless Surfacing Grinder Kit with Kickback Brake is equipped with a brushless motor to eliminate brush replacements, reducing downtime. It also features a brake that stops the wheel quickly. PERFORM & PROTECT™ features on this tool include Kickback Brake and E-CLUTCH® to help enhance user protection without impacting performance.

  • Brushless motor requires no brush changes
  • The Electronic kickback brake engages when a pinch, stall, or bind-up event is sensed, engaging with maximum force to quickly stop the wheel, reduce the movement of the grinder, And shut the motor off
  • POWER-LOSS RESET® - The ON/OFF trigger switch has a no-volt release function. In the event of a power outage or other unexpected shut down, the trigger switch will need to be cycled (turned off and then on) to restart tool.
  • Variable speed functionality lets the user change wheel speed for applications as needed
  • DWE46005 bail handle (included) offers multiple positions for user preferred configuration

User questions & answers

Question: Can you use it for buffing floor
Answer: No it’s brown and the best self tanner I’ve gotten. I recommend applying with tanning mitt so you don’t get brown hands
Question: Can the dust shroud be removed so the grinder can be used with a cutting wheel
Answer: This is a gel application. U use gloves to rub in. I prefer the spray and mit its way easier to apply and spreads even compared to the gel. The spray i personally think goes on darker. Depends on how well u keep it up for last such as exfoliating before u apply and moisturizing after.
Question: Does this grinder come with the dust shroud included and cutting blade
Answer: It includes 1 set of lattes/vinyl gloves
Question: Do you have to put a washer before attaching the diamond cup
Answer: Expired product turns green.. my guess id that you did not recieve a fresh bottle :-/

5" (set of 6 Pieces) Diamond Wall Chaser Crack Chaser Tuck Point Blade Segmented Straight Cutting Blade Convex Curved Blade for stone concrete granite for tile floor grinder wet polisher circular saw

Asia Pacific Construction

Based on 2 reviews Check latest price

Product description

2 Pieces X 5" Diamond Tuck Point Blade (1/4" segment thickness, inner hole diameter 7/8"-5/8"). design for very fast, efficient cleaning, routing and repairing of cracks in concrete and most other building materials. This blade is used for mortar removal, grout repair and cleaning of concrete applications using an Angle Grinder or Circular Saw. 2 Pieces of 5 inch / 125 mm diamond convex blade, inner hole diameter is 7/8"-5/8". for stone concrete circle cutting. 2 Pieces of 5 inch / 125 mm diamond segmented cutting blade, inner hole diameter is 7/8"-5/8". for stone concrete straight cutting.

  • 2 Pieces X 5" Diamond Tuck Point Blade (1/4" segment thickness, inner hole diameter 7/8"-5/8"). design for very fast, efficient cleaning, routing and repairing of cracks in concrete and most other building materials. This blade is used for mortar removal, grout repair and cleaning of concrete applications using an Angle Grinder or Circular Saw.
  • 2 Pieces of 5 inch / 125 mm diamond convex blade, inner hole diameter is 7/8"-5/8". for stone concrete circle cutting.
  • 2 Pieces of 5 inch / 125 mm diamond segmented cutting blade, inner hole diameter is 7/8"-5/8". for stone concrete straight cutting.

7" hook & loop Rubber Backing Pad Backer (3 Pieces) 5/8"-11 arbor fits wet polisher angle grinder floor tile burnisher sander concrete grout mortar polishing pad sanding disc grinding wheel

Check latest price

Product description

3 Pieces of 7" / 180 mm Rubber backer / pad holder for 7" diamond polishing pad. Remind: Rubber backer's max capacity is 5000 RPM. Please don't use it with high speed polisher.

  • 3 Pieces of 7" / 180 mm Rubber backer / pad holder for 7" diamond polishing pad.
  • Remind: Rubber backer's max capacity is 5000 RPM. Please don't use it with high speed polisher.

New 6PK 60Grit Smoother Diamond Grinding Blocks for Edco, Stow, Husqvarna, Diamond Products and General Equipment Floor Grinders

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Product description

TWO SETS(TOTAL 6 BLOCKS) OF 60GRIT SMOOTHER PROFESSIONAL GRADE DIAMOND GRINDING BLOCKS. FITS EDCO, STOW, HUSQVARNA, DIAMOND PRODUCTS AND GENERAL EQUIPMENT FLOOR GRINDERS. INCLUDES 6 WOOD WEDGES AND READY TO PEG IN MACHINE. SMOOTHER 60GRIT FOR LAYERS OF COATINGS AND TOPPINGS SUCH AS HARD EPOXY RESINS, FIBERGLASS, CARPET BACKINGS, TILE GLUE AND MASTIC. THIS PRODUCT IS MANUFACTURED FOR CONCRETE FLOOR GRINDERS IN AIDING IN REMOVING THIN LAYERS OF COATINGS (URETHANE OR EPOXY ) AND TOPPINGS WITHOUT CLOGGING. DIAMOND BLOCKS CAN ALSO PROVIDE SMOOTHING TROWEL MARKS, UNEVEN/ROUGH OR PATCHED SLABS AND LEVELING ON CONCRETE OR TERRAZZO. PROVIDES MATERIAL REMOVAL RATES UP TO SEVEN TIMES FASTER THAN GRINDING STONES... MANUFACTURED FOR INDUSTRIAL USE. OUR # 1 SELLER WITH PRO CONTRACTORS AND RENTAL CENTERS. FITS FOLLOWING FLOOR GRINDERS: EDCO  Single-Disc Grinder: SEC-1.5L, SEC-1.75LAND SEC-2B TAKES 3 DIAMOND BLOCKS SET. Dual-Disc Grinder: 2EC-1.5B, 2EC-1.5HP, 2EC-2B,2EC-3B, 2GC-5.5H, 2GC-11H, 2GC-11PAND2GC-13P TAKES 6 DIAMOND BLOCKS SETS. Four-Disc Grinder: 411-11H, 411-11P, 411-5B/230/3, 411-5B/460/3, 411-5B/230/1, 4GC-11H, 4GC-11P, 4EC-5B/230/1, 4EC-5B/230/3, 4EC-5B/460/3, 4EC-5B/50/220/3, 4EC-5B/50/380/3, 4EC-5B/50/440/3 AND 4GCP-13P TAKES 12 DIAMOND BLOCKS SETS. HUSQVARNA Dual-Disc Grinder: RG2112 AND RG2112E TAKES 6 DIAMOND BLOCKS SETS. STOW Single-Disc Grinder: SFG10E TAKES 3 DIAMOND BLOCKS SET. Dual-Disc Grinder: DFG110H, DFG20E AND DFG30E TAKES 6 DIAMOND BLOCKS SETS. Diamond Products Dual-Disc Grinder: CC200 TAKES 6 DIAMOND BLOCKS SETS.  And other brands of General Equipment Floor Grinders. BETTER QUALITY, SERVICE AND RELIABILITY GUARANTEED!

  • New 6PK(Total 6 Blocks) 60Grit Smoother Diamond Grinding Blocks for Edco, Stow, Husqvarna, Diamond Products and General Equipment Floor Grinders.
  • 51X10X12.5MM 4 Large, Industrial Segments.
  • 7 times faster than grinding stones and last longer.
  • Can be used for wet or dry grinding.
  • All with Wedge and ready to peg in machine.

New 3PK Diamond Grinding Blocks for Edco, Stow, Husqvarna, Diamond Products and General Equipment Floor Grinders- Premium Quality

Based on 1 reviews Check latest price

Product description

ONE SET(TOTAL 3 BLOCKS) OF PREMIUM GRADE DIAMOND BLOCKS WITH INDUSTRIAL SEGMENTS (51X10X12.5MM) PER BLOCK. INCLUDES 3 PLASTIC WEDGES WHICH DO NOT SWELL AND SHRINK WITH WATER THAT CAN CAUSE THE BLOCKS TO BECOME LOOSE, READY TO PEG IN MACHINE. THIS PRODUCT IS MANUFACTURED FOR CONCRETE FLOOR GRINDERS IN AIDING IN REMOVING THIN LAYERS OF COATINGS (URETHANE, PAINT, EPOXY...) AND TOPPINGS WITHOUT CLOGGING. DIAMOND BLOCKS ALSO PROVIDE SMOOTHING TROWEL MARKS, UNEVEN/ROUGH OR PATCHED SLABS AND LEVELING ON CONCRETE OR TERRAZZO. PROVIDES MATERIAL REMOVAL RATES UP TO SEVEN TIMES FASTER THAN GRINDING STONES... 30/40 GRIT FOR LAYERS OF COATINGS AND TOPPINGS SUCH AS HARD EPOXY RESINS, FIBERGLASS, CARPET BACKINGS, TILE GLUE AND MASTIC. MANUFACTURED FOR INDUSTRIAL USE. OUR # 1 BEST SELLER WITH PRO CONTRACTORS AND RENTAL CENTERS. FITS FOLLOWING FLOOR GRINDERS: EDCO Single-Disc Grinder: SEC-1.5L, SEC-1.75LAND SEC-2B TAKES 3 DIAMOND BLOCKS SET. Dual-Disc Grinder: 2EC-1.5B, 2EC-1.5HP, 2EC-2B,2EC-3B, 2GC-5.5H, 2GC-11H, 2GC-11PAND2GC-13P TAKES 6 DIAMOND BLOCKS SETS. Four-Disc Grinder: 411-11H, 411-11P, 411-5B/230/3, 411-5B/460/3, 411-5B/230/1, 4GC-11H, 4GC-11P, 4EC-5B/230/1, 4EC-5B/230/3, 4EC-5B/460/3, 4EC-5B/50/220/3, 4EC-5B/50/380/3, 4EC-5B/50/440/3 AND 4GCP-13P TAKES 12 DIAMOND BLOCKS SETS. HUSQVARNA Dual-Disc Grinder: RG2112 AND RG2112E TAKES 6 DIAMOND BLOCKS SETS. STOW Single-Disc Grinder: SFG10E TAKES 3 DIAMOND BLOCKS SET. Dual-Disc Grinder: DFG110H, DFG20E AND DFG30E TAKES 6 DIAMOND BLOCKS SETS. Diamond Products Dual-Disc Grinder: CC200 TAKES 6 DIAMOND BLOCKS SETS. And other brands of General Equipment Floor Grinders. BETTER QUALITY, SERVICE AND RELIABILITY GUARANTEED!

  • New 3PK(Total 3 Blocks) Diamond Grinding Blocks for Edco, Stow, Husqvarna, Diamond Products and General Equipment Floor Grinders- Premium Quality.
  • 51X10X12.5MM 4 Large, Industrial Segments.
  • 7 times faster than grinding stones and last longer.
  • Can be used for wet or dry grinding. All with Wedge and ready to peg in machine.
  • MANUFACTURED FOR INDUSTRIAL USE. OUR # 1 SELLER WITH PRO CONTRACTORS AND RENTAL CENTERS.

User questions & answers

Question: is this product comin from china and do you have 60 and 120 grit
Answer: I believe the king is 20 x 36. The queen is 20 x 30.
Question: is this product comin from china
Answer: I received 2 and they are very comfortable

DAMO Variable Speed Wet Stone Polisher 5 inch Concrete Polisher Grinder for Granite Concrete Floor Countertop Polishing Grinding

Based on 15 reviews Check latest price

User questions & answers

Question: Can I use this to dry grind / sand / polish my marble countertops
Answer: Yes, you can use it dry when you don’t connect hose to the water source. DAMO’s 5” Dry Diamond Polishing Pads, 5FPPDSET would be perfect to polish marble countertops. Thank you for your inquiry!
Question: Could you use 4” pads on this
Answer: Yes, you can use 4” pads with 4” back holder. Thank you!
Question: version 220v
Answer: Unfortunately the wet polisher is only in 110V. Thank you for your inquiry!
Question: What package would you recommend for polishing a quartz countertop
Answer: We would recommend you to use DWP1254FPPMSETB4SRBH kit. See below for link. https://www.amazon.com/DAMO-Variable-Polisher-Polishing-Countertop/dp/B0062W1WMK/ref=sr_1_6?dchild=1&keywords=damo+wet+polisher+kit&qid=1613057764&sr=8-6 Thank you!

Makita GA7031Y 7" Angle Grinder, with AC/DC Switch

Based on 49 reviews Check latest price

Product description

Makita’s 7-Inch Angle Grinder (model GA7031Y) combines 15 AMP power with ease-of-use and motor protection features for longer-lasting performance in industrial and commercial environments. 15 AMP Motor Delivers 8, 500 RPMThe GA7031Y is powered by a 15 AMP motor that delivers 8, 500 RPM for faster stock removal. The labyrinth construction minimizes dust and debris penetration into the motor and bearings for longer tool life. In addition, the armature is sealed by a protective zig-zag varnish which prevents contamination by creating a barrier under rotation, and wire mesh intake covers are engineered to prevent metal shards from entering the motor. The armature is supported by dual ball bearings and reinforced with a nylon retainer for improved durability. The GA7031Y weighs only 13. 5 lbs. and is built with comfort and ergonomic features for extended use. The grinder features an ergonomic rubberized handle engineered for lower vibration and can be installed on either side of the tool. The push-button rotatable rear handle has positive stops and can be positioned every 90 degrees for operator convenience. Additional convenience features include a “tool-less” wheel cover for easy guard adjustment, and externally accessible brushes for easy serviceability. The GA7031Y is a versatile and powerful grinder engineered for demanding applications and is ideal for masons, welders, ship yard workers, automotive technicians, stone/tile work, HVAC, electricians, and general contractors for a range of industrial grinding applications.

From the Manufacturer

Powerful 15.0 AMP motor delivers 8,500 RPM for faster material removal. Rotatable rear handle rotates with just the push of a button, with positive stops every 90 degrees, to suit most cutting and grinding operations. Wire mesh intake covers are engineered to prevent metal shards from entering motor especially when used in close proximity to other grinders.

  • Powerful 15. 0 AMP motor delivers 8, 500 RPM for faster material removal
  • Spiral bevel gears for smoother rotations and a more efficient transfer of energy
  • Labyrinth construction prevents debris from penetrating the motor, bearings and gears for longer tool life
  • Zig-zag varnish protects the armature coil from dust and debris for longer motor life
  • Wire mesh intake covers are engineered to prevent debris from entering motor especially when used in close proximity to other grinders
  • "Tool-less" wheel cover allows for easy guard adjustment with no need for tools to multiple grinding and cutting angles
  • Labyrinth construction minimizes dust and debris penetration into the motor and bearings for longer tool life

User questions & answers

Question: Where is the ac/dc switch for use with alternative power source located on this tool
Answer: The 7” model is identical to the 9” model. GA7031Y vs GA9031Y (aside from the 9” guard). It is essentially a 7-9” tool. Same driver / arbor, different wheel guards. If you purchase the 9” guard, you now have 2 more inches. NEVER operate this tool without the guard. NEVER. The tool manuals supplied are the same documents. See the Makita website for part numbers.
Question: Is this variable speed
Answer: Assembled in the USA is the only information given.
Question: Can a 9 inch grinding wheel be used on this tool
Answer: It was made in Korea and we carry 60 and 120 grit. Thanks.
Question: Es made in China
Answer: It was made in Korea.

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