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Surface Prep Grinders   >   High Torque, Direct Drive Grinders
 

Hawk Concrete Floor Grinders & Slurry Vacuums.

Direct Drive Floor Grinders

American Made        USA Engineered

 

Hawk Concrete Floor Grinder, 17" & 20".

 

17" & 20" - High Torque Low RPM

Hawk Concrete Floor Grinder - made in USA.--- Direct, Gear Drive Machine
  • Provides incredible results & low amp draw (7.9 Amp) vs. a planetary grinder - operates from a 15 amp circuit
  • Applications:  Grind, Coating Removal, Scarify, Polish, Restore - Concrete and Stone Floors
--- Unsurpassed Results vs. a Planetary Grinder
  • Greater torque, superior versatility, production, performance, durability, minimal maintenance and never any belts to replace.

 

17" & 20" Floor Grinder
-- USA Made --

Grinder in Action Video

$3,000.00      
17" High Torque Floor Machine w/ XHD Gears, (4) 20 lb Weight Plates, Superior Built-In Dust Pick-Up, 1.5" HP TEFC 115/230v 60 Hz Motor, Weight:  233 lbs.

 

$3,061.00      
20" High Torque Floor Machine w/ XHD Gears, (4) 20 lb Weight Plates, Superior Built-In Dust Pick-Up, 1.5" HP TEFC 115/230v 60 Hz Motor, Weight:  235 lbs.

 

Hawk Floor Grinder - diamond driver plate.Diamond Driver Plate
Attaches to the grinder's clutch plate, accepts a complete assortment of diamond tools to handle a virtually any type of project:  scrape, grind, scarify, coating removal, polish, restore concrete, granite, marble.  For additional information, see below or click here.

 

 

Description - 17" & 20" Grinders:
  • 11:1 Gear Ratio with Triple Extra HD, Helical-Cut Industrial Gears - provides the high torque to drive scrapers & metal diamonds with minimal amp draw
  • Wheels-Down Machine - productivity improves 100% vs. using a wheels-up or so-called swing machine.  With a wheels-up / swing machine you are constantly fighting against its swing movement - especially during high torque application such as grinding and coating removal;  additionally, there’s a long learning curve to master how to use or control a swing machine
  • Powered by a TEFC (Totally Enclosed Fan Cooled) Motor - motor is protected from dust, debris, slurry
  • Floating head - ensures the tooling grinds and scrapes flat and fast, follows the floor’s contour, prevents dig and ring marks
  • 360° Internal Dust Pick-Up - collects airborne dust and debris in the brush cover and directs it upwards to the 2" vacuum port.

 


 

Hawk Floor Grinder - locking handle positioning. Hawk Floor Grinder - dual triggers. Hawk Floor Grinder - 2" dust port. Hawk Floor Grinder - included weights. Hawk Floor Grinder - built-in dust control. Hawk Floor Grinder - locking power cord.
5 handle positioning heights with pin-set lock. Dual operating steel triggers with negative pressure on/off switch Dust shroud is built with 2" vacuum port. Includes 80 lbs of weighted plates with locking pins. 360° duct in brush apron that directs debris to the vacuum port. 50 ft 2-pc (12-3) SJTOW w/ Yellow Twist Lock Plug

 


 

DIRECT DRIVE vs. PLANETARY MACHINE

DIRECT DRIVE - energy and efficiency is maximized while amp draw and friction loss is minimized vs. a planetary gearbox which spreads to 2, 3 and more heads.

Maintenance is simple and minimal.

PLANETARY DRIVE - its design is used to increase RPM for polishing.  With the increase in RPM, Torque decreases.

Hawk Floor Grinder - made in America. USA Engineered, Designed & Made

Features

  • Dual Voltage:  120 or 240 volt, easy to switch - 7.9 maximum amp draw @ 120 volt

  • Foot Operated Tilt Back for Easy Transporting

  • Dual steel operating triggers with negative pressure on/off switch

  • Disassembles for easy handling down stairs

  • 2" x 8" non-marking load bearing, ball bearing wheels

  • Thumb-operated safety switch with comfort cushion grips

  • Includes removal weights with (4) 20 lb plates and locking pins
  • Swing machine vs. wheels-down machine.Wheels-Down vs. a Wheels-up Machine (i.e. swing machine, photo right)
    • Swing machines are used in the janitorial profession to buff and wax floors, it takes time to learn how to control a Wheels-Up machine - learning curve is long
    • For concrete grinding and coating removal - high torque is required and a Wheels-Down machine eliminates the learning cuff and a worker's muscle to control the machine.  With a Wheels-Down machine, unskilled workers can become experts within minutes and worker fatigue is reduced 120%.

Specifications

Model F75-17B
Machine Size 17"
Driver / Plate Size 16"
Tools / Plate 6
RPM 165
Max Amp Draw 7.9
Weight 233 lbs.
Model F75-20B
Machine Size 20"
Driver / Plate Size 19"
Tools / Plate 6
RPM 165
Max Amp Draw 8.5
Weight 235 lbs.

Specs - Both Models

Motor 1.5 HP, 180 frame TEFC Dual Capacitor AC
Power 120 - 240V
60 Hz power
Drive System Triple-XHD
11:1 Helical-Cut
Industrial Gears
Steel Coupler, Drive Shift Versus a fiberglass drive shaft that wears and breaks often
Wheels, Non-Marking 2" x 8", ball bearing
Vacuum Hose, Dust Port 2"
Approvals UL / CUL Listed
66 dB - Meets GS42 Standard
Disc Rotation Clockwise
Warranty 1-Year

 

Know Your Market  The type of equipment needed starts with understanding the project size and your target market [i.e. concrete polishing vs. coating removal and grinding.]

Concrete Grinders  Can be characterized as planetary or rotary.  Understanding the difference between the two technologies will enable you to choose the right grinder to smooth, prep, level or polish a concrete floor.

Planetary Gearbox
  • Gear design allows the grinder to move in a straight line across the floor with relative ease, which means greater flexibility and less struggle for operators

  • Best used on less aggressive jobs such as smoothing out a concrete floor or preparing smaller floors for an epoxy coating

  • Gearbox is spread to 2, 3, 4 and more heads, the design typically provides more torque during starting and then transferred to increased RPM speeds for polishing.

Summary:  Best for polishing.

Rotary - Direct Drive
Wheels-Down
  • Gear design is a direct connection from the motor to the grinding head which maximizes energy and efficiency while reducing amp draw and avoids friction loss and wear that occurs with an offset planetary gearbox

  • Maintenance is minimal and the purchase price is less because the planetary gearbox is eliminated.

  • Direct connection from the motor eliminates belts and pulleys that are in planetary grinders

  • Design optimizes the grinder's weight and rotational speed while maintaining high torque which a planetary grinder does not

  • Wheels-Up vs. Wheels-Down Machine
    Rotary machines with "wheels-up" are harder to operate and requires more training for operators
    > Skilled and unskilled users can take advantage of the direct drive / wheels-up design to perform more intensive tasks such as removing heavy mastic or thick layers of paint from a concrete surface.

 

Related Products 

 

Hawk Floor Grinder - diamond driver plate.Diamond Driver Plate (right)

  • Accepts a complete assortment of diamond tools (shown below) to grind, remove coatings & sealers including thick tar, polish and scarify concrete, granite and marble floors.

  • Hawk Floor Grinder - clutch plate.Plates are equipped with metal 3-keyway clutch plate (right), the industry standard for rotary grinders and buffers - prevents bodily injury and damage to the plate and grinder

  • Available in [4] sizes < click here for additional info and to order >

    • 17" Grinder - 17" Diamond Driver Plate

    • 20" Grinder - 20" Diamond Driver Plate

    • 10" Grinder - 10" Diamond Driver Plate

    • 13" Grinder - 13" Diamond Driver Plate.

Diamond Tooling

  • The following diamonds install into the recessed and magnetic slots of the Diamond Driver Plate (above)

  • Each driver plate (17" or 20") holds 6 tools

  • For tool pricing click on the following links.

< Scarify, Grind, Removal > < Pads >
Metal Diamonds
- Concrete Grinding -
PCD's
- Coating Removal -
Carbide Scrapers
- Scarify -
3" Round Pads
- Transitional / Polishing -
Std Size Trapezoid, Premium Quality - 2 Bar Std Size Trapezoid, Premium Quality - Coating Removal w/ Diamond Bar Carbide Scrapers - to scarify concrete. Semi-Metal & Resin Pads - concrete cleaning and polishing.
3-Hole M6 Trapezoids Semi-Metal or Resin

 

 

 

 

  USA Dust Guard
  Div. of Scott Electric
  24 39th Street
  (Lawrenceville, Strip District)
  Pittsburgh, PA  15201

USA Dust Guard - Products for the Concrete, Masonry & Highway Trades.

--- Div. of Scott Electric ---

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