Diamond Grinding Surface Prep | Concrete Grinder Preparation

DIAMOND GRINDING • CONCRETE PREPARATION • FLOOR GRINDING • CONCRETE FLOOR PREP • CONCRETE GRINDERS

What Is Concrete Diamond Grinding?

Diamond grinding is a concrete pavement restoration technique that corrects irregularities such as minor pits and divots, faulting and roughness on concrete pavements. This is achieved by using diamond bits to grind the surface. This also leaves a very smooth profile-ideal for thin-mil coating or sealer applications. Diamond grinding also profiles the concrete and removes contaminants from the surface.

Diamond grinding is typically used to level uneven pavement and to roughen surfaces for skid resistance. It has low dust levels, removes epoxies and urethanes but is slower than other methods. Some diamond grinders can also leave swirl marks in the slab if you're overly aggressive.

Some of the advantages of a diamond ground pavements include:

• Provides a smooth surface that is often as good or better than a new pavement
• Enhances surface texture and friction and there is no evidence of deleterious effects
• These improvements reduce the potential for small-vehicle hydroplaning
• Does not significantly affect fatigue life of a pavement
• Does not affect material durability unless the coarse aggregate is a soft stone subject to polishing
• May be applied only where is needed, however, spot grinding is generally not usually recommended
• Restoring smoothness to faulted or curled concrete highways Improve skid resistance
• Level doorway entrances
• Smooth driveway approaches

Scratch Coat Grinding / Sanding

This method is achieved by attaching various sized grit sanding pads to the concrete floor grinder. It prepares, cleans and abrades existing coatings for recoat. This process removes thin layer coatings and provides texture for two coatings to bond together. This method is slow and intensive. This technique works for coatings that were recently applied and that need to be touched up with an additional coating. This type of sanding is often refered to as "Scratch and recoat".

Onfloor 16 Floor Grinder / Scarifier / Sander

This is Onfloor 16 Floor Grinder / Scarifier / Sander comes complete with either the Red Diamond Concrete Plates OR The Carbide Scarifier blades. It runs on 115V and has a 16" head.

ONFLOOR™ Technologies presents Onfloor 16™ — a revolutionary new tool in floor preparation. More than just a sander, Onfloor 16™ helps bring new life to concrete surfaces, decks and hardwood floors. Onfloor 16™ is powerful enough for demanding industrial jobs, yet light and simple enough for home use. And the exclusive patented design of Onfloor 16™ works to provide superior results with minimum effort. So not only will you be sanding like a pro in just a few minutes, you’ll be finished just as quickly.

With Onfloor 16™, you can remove years of wear from just about any concrete surface. Our exclusive Red Diamond Concrete Plates are embedded with a coarse diamond grit that will quickly ready your floor for any coating application. And if your concrete floor has a coating that doesn't require removal, the Red Diamond Concrete Plates will abrade the surface and remove the gloss. Plus, when fitted with the powerful Carbide Scarifier Attachments, Onfloor 16™ helps remove most coatings and hard, brittle adhesives. The Carbide Scarifier blades are available for this machine as well.

Frequently Asked Questions
Instructional Video for Concrete Prep

BW Manufacturing DG-16 Diamond Grinder/Polisher

The DG-16 has the ability to grind within 1" of a vertical surface. The flexibility between grinding and polishing, and the virtually dust free operation when connected to BW Manufacturing's A-101 Pulse Vac makes the DG-16 an excellent addition to the surface preparation contractors line of equipment. What sets the DG-16 Diamond Grinder/Polisher apart from all the others is the design, concept, and innovation. The DG-16 has a rubber mounted non-planetary grinding head that where down pressure controlled by spring pressure. With the combination of the wheels a floating, head and specially designed diamonds, you are able to grind or polis without scaring or gouging of the concrete, even on cracks and expansion joints. With the ease of diamond cutter and polishing pad installation and removal, the contractor won't lose production due to lengthy diamond tool changeovers. This machine is a 220 Volt Electric Unit.

FEATURES / SPECIFICATIONS:
Cleaning Path: 16”
Side grind clearance to wall: 1”
Front grind clearance to wall: 6”
Wheels: 2 - 4 Inch Rigid / 2 - 4 Inch Swivel
Height: 29”
Length: 24”
Width: 18”
Weight: 210 Lbs. (Electric) / 225 Lbs. (Gas)
Motor Options: 5 HP 220 Volt single phase / 5 HP 440 Volt three phase /11HP Gas (Honda)
Seal System: Brushes
Control Handle: Fully Adjustable

Metabo W23-230 Angle Grinder- 9" - 6,600 RPM - 15.0 AMP

Features:

• Robust Metabo Marathon motor
• High efficiency and increased torque by optimum heat dissipation
• Die cast aluminium gearbox housing
• Spindle lock
• Additional VibraTech handle for vibration damping
• Rotating main handle without tools
• Protective cover adjustment without tools

Specifications:

Grinding wheel diameter: 9 "
Torque: 150 in-lbs
No-load speed: 6600 /min
Rated input power: 2300 W
Output power: 1580 W
Rated load speed: 4600 /min
Spindle thread: 5/8" - 11 UNC
Weight (without mains cable): 10.8 lbs

Onfloor Red Diamond Heads

Description:

The Onfloor Red Diamond Attachments are for new or old concrete, removes thin mil coatings, removes latents containments, and opens pores in unfinished concrete. Estimated coverage for a set of 3 attachments is 8000 sq. ft.. Also used for abrading existing concrete for recoat.

Sizes:

6.5" - #492329
8" - #468509

Onfloor Carbide Scarifier Heads

Description:

The Onfloor Carbide Scarifier Attachments are for removal of thin set coatings from concrete floors. 3 to a set. Carbide Scarifier Replacement Kits are also available as a special order item.

Sizes:

6.5" - #492353
8" - #492426

Onfloor 8 Way Carbide Scraper Heads

Description:

The Onfloor 8 Way Carbide Scraper Attachments are for removal of mastics from floors without creating scratch patterns. 3 to a set.

Sizes:

6.5" - #497797
8" - #497819

Onfloor Diamabrush Mastic Removal Tool

Description:

The Onfloor Diamabrush™ Mastic Removal Tool is designed to remove stubborn coatings from concrete, such as mastic, carpet or tile adhesive, thin-set and thin mil coatings like urethane or paint. No need to waste time and money on heavy grinding equipment or harmful chemicals. 3 to a set.

Features:

• Uses diamond coated blades to grind tough coatings away.
• No dangerous and volatile chemicals are required.
• Simply apply water to eliminate dust and to flush debris away.
• Money saving replaceable blades.
• Designed to fit a wide variety rotary flooring machines.
• The Diamabrush™ Mastic Removal Tool has limited surface contact during use to retain sharp cutting points over the life of the tool.
• Removes mastic, carpet or tile adhesive, thin-set and thin mil coatings like urethane or paint.
• Rigid, exposed diamond cutting surface creates a level floor with normal use.
• Removes most unwanted low spots within the concrete.
• Low profile design enables tool to travel over gaps in the concrete.

Sizes:

6.5" - #235938
8" - #235954

Onfloor Diamabrush Concrete Prep Tool

Description:

The Onfloor Diamabrush™ Concrete Prep Tool has a patented diamond 50/60 grit metallic blade. The blade is then bonded to metallic backing and assembled to flexible, spring-steel blade. The flexible blade allows the diamond to remain in constant contact with the floor, maximizing the tools effectiveness. Need to re-coat an epoxy concrete floor? This tool abrades existing epoxy floors, effectively preparing it for the re-coat application. 3 to a set.

Features:

• Abrades existing epoxy coated, painted or bare concrete floors.
• Uses diamond coated blades to grind tough coatings away.
• No dangerous and volatile chemicals are required.
• Use with water to eliminate dust and to flush debris away.
• Money saving replaceable blades.
• Designed to fit a wide variety rotary flooring machines.
• The Diamabrush™ Concrete Prep Tool has limited surface contact during use to retain sharp cutting points over the life of the tool.
• Removes mastic, carpet or tile adhesive, thin-set and thin mil coatings like urethane or paint.
• Rigid, exposed diamond cutting surface creates a level floor with normal use.
• Removes most unwanted low spots within the concrete.
• Low profile design enables tool to travel over gaps in the concrete.

Sizes:

6.5" - #235946
8" - #235962

Onfloor Machine Weights