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Diamatic 555

by Blades Admin

Diamatic 555: Complete Guide to the BMG-555 Concrete Floor Grinder and Polisher

The Diamatic 555, commonly known as the Diamatic BMG-555, is a professional planetary floor grinder designed for concrete grinding, surface preparation, coating removal, adhesive removal, floor leveling, and concrete polishing. It is built for contractors who need more productivity than a small floor grinder while still maintaining a manageable machine size for commercial and residential projects.

The Diamatic BMG-555 uses a three-head planetary grinding system that provides consistent contact with the concrete surface. With an approximately 22-inch grinding width, the machine is well suited for medium and large floor preparation projects, including warehouses, retail spaces, garages, commercial buildings, industrial floors, and polished concrete applications.

What Is the Diamatic 555?

The Diamatic 555 is an electrically powered planetary concrete floor grinder and polisher. Instead of using one large grinding disc, the machine operates with three individual grinding heads arranged within a planetary drive system.

This configuration helps distribute grinding pressure across the floor and allows contractors to use different types of diamond tooling depending on the application.

Common Diamatic 555 applications include:

  • Concrete grinding

  • Concrete polishing

  • Floor leveling

  • Surface preparation

  • Epoxy removal

  • Coating removal

  • Glue and adhesive removal

  • Terrazzo grinding

  • Natural stone grinding

  • Concrete profiling

  • Floor restoration

The ability to change tooling makes the BMG-555 useful throughout several stages of a flooring project.

Diamatic BMG-555 Grinding Width

One of the most important features of the Diamatic 555 is its approximately 22-inch, or 555 mm, grinding width.

This places the machine between smaller compact grinders and much larger industrial floor grinding systems.

A smaller grinder may be easier to transport, but it requires considerably more passes to cover a large floor. Large industrial grinders can provide exceptional production but may be difficult to move through doors, elevators, residential properties, or confined commercial spaces.

The BMG-555 provides a practical balance between grinding capacity and maneuverability.

Three-Head Planetary Grinding System

The three-head planetary system is one of the defining characteristics of the Diamatic BMG-555.

Three individual tool plates operate beneath the grinder. The planetary movement helps the tooling maintain consistent contact with the floor while producing an even grinding pattern.

This system can provide several advantages, including:

  • Consistent floor contact

  • Effective material removal

  • Smooth grinding patterns

  • Multiple tooling configurations

  • Good polishing capability

  • Efficient surface preparation

Tooling can be changed according to whether the contractor needs aggressive coating removal, general concrete grinding, surface refinement, or polishing.

Diamatic 555 for Concrete Grinding

Concrete grinding is one of the primary applications for the Diamatic 555.

Contractors may use the machine to remove surface imperfections, flatten high areas, prepare concrete for coatings, expose aggregate, remove old flooring materials, or begin a polished concrete process.

Typical applications include:

  • Warehouse floors

  • Garage floors

  • Retail spaces

  • Commercial buildings

  • Industrial facilities

  • Residential concrete

  • Restaurants

  • Showrooms

The correct diamond tooling is extremely important because concrete hardness varies considerably between slabs.

Diamond Tooling for the Diamatic 555

The performance of a floor grinder depends heavily on the diamond tooling installed underneath it.

Different tooling can be selected for:

  • Hard concrete

  • Medium concrete

  • Soft concrete

  • Coating removal

  • Glue removal

  • Surface leveling

  • Polishing

  • Surface texturing

A general rule when selecting diamond bond hardness is that hard concrete typically requires a softer-bond diamond, while soft or highly abrasive concrete generally requires a harder-bond diamond.

This helps ensure that fresh diamond particles remain exposed while controlling segment wear.

Diamatic 555 for Coating Removal

The BMG-555 can be configured for aggressive coating removal.

Depending on the floor and material, contractors may need to remove:

  • Epoxy

  • Paint

  • Adhesives

  • Glue

  • Floor coatings

  • Thin-set residue

  • Surface contaminants

For particularly difficult coatings, PCD tooling may be appropriate.

PCD, or polycrystalline diamond, tools are designed to aggressively scrape and remove many coatings rather than simply grinding the concrete underneath them.

Diamatic 555 PCD Tooling

PCD tooling can make the Diamatic 555 particularly useful for floor-removal contractors.

Depending on the specific PCD configuration, these tools may be used for removing:

  • Thick epoxy

  • Adhesives

  • Glue

  • Elastomeric coatings

  • Certain waterproofing materials

  • Heavy floor coatings

The most aggressive tooling is not always the best choice.

Tooling should be matched to the coating thickness, hardness, concrete condition, and desired final surface.

Diamatic 555 for Concrete Polishing

The Diamatic 555 can also be incorporated into a concrete polishing system.

Concrete polishing generally involves gradually refining the floor using increasingly fine abrasive tooling.

A typical process may begin with aggressive metal-bond diamonds and gradually transition into finer grinding and polishing tools.

Depending on the desired finish, contractors can create:

  • Matte concrete

  • Honed concrete

  • Satin finishes

  • Semi-polished concrete

  • High-gloss polished concrete

Polished concrete is commonly used in warehouses, retail stores, restaurants, offices, showrooms, residential interiors, and commercial facilities.

Wet Grinding With the Diamatic 555

The Diamatic BMG-555 can be used for wet grinding applications when properly configured.

Wet grinding introduces water to the grinding surface.

Potential advantages include:

  • Reduced airborne dust

  • Tooling temperature control

  • Different cutting characteristics

However, wet grinding produces concrete slurry.

That slurry must be properly collected, contained, and disposed of according to applicable requirements.

Dry Grinding With the Diamatic 555

Dry grinding is extremely common for professional concrete surface preparation.

The grinder is connected to an appropriate industrial dust collector or vacuum system.

A properly configured dust extraction system helps:

  • Capture concrete dust

  • Improve operator visibility

  • Reduce cleanup

  • Keep the grinding area cleaner

  • Maintain more efficient production

Concrete grinding can generate respirable crystalline silica, so contractors should always use appropriate dust-control equipment and follow applicable workplace safety requirements.

Diamatic 555 Dust Collection

The BMG-555 incorporates a dust shroud around the grinding area.

The shroud helps contain dust underneath the machine so that an attached dust extractor can remove it.

For effective dust collection, contractors should regularly inspect:

  • Dust shroud

  • Brush seals

  • Vacuum hose

  • Hose connections

  • Dust collector filters

  • Vacuum airflow

If dust suddenly begins escaping from underneath the grinder, the problem may be related to the vacuum rather than the grinder itself.

Variable-Speed Grinding

Some Diamatic BMG-555 configurations feature variable-speed operation.

Variable speed allows contractors to adjust grinding-head speed according to:

  • Concrete hardness

  • Diamond tooling

  • Coating type

  • Polishing stage

  • Desired surface finish

Running the machine at maximum speed is not necessarily ideal for every application.

The best operating speed depends on the tooling and floor conditions.

Diamatic 555 Power Requirements

Electrical requirements can vary between different versions of the BMG-555.

Some BMG-555 PRO configurations were manufactured for approximately 230-volt single-phase electrical service.

Before purchasing or operating a used machine, always inspect the equipment data plate.

Confirm:

  • Voltage

  • Phase

  • Amperage

  • Frequency

  • Motor rating

  • Plug configuration

Do not assume every Diamatic 555 has identical electrical requirements.

Diamatic 555 Weight

Some historical BMG-555 PRO configurations weigh approximately 600 pounds.

The machine's weight helps create downward grinding pressure, but transportation needs to be considered.

Contractors may require:

  • Trailer

  • Box truck

  • Lift gate

  • Loading ramp

  • Equipment dolly

Always consider how the machine will enter the building before arriving at the jobsite.

Doorways, elevators, stairs, and narrow hallways can create significant transportation challenges for professional floor grinders.

Diamatic 555 for Epoxy Floor Preparation

Proper concrete preparation is essential before installing an epoxy flooring system.

The Diamatic 555 can help contractors mechanically prepare the concrete before coating installation.

A typical process may include:

  1. Inspecting the existing concrete.

  2. Removing old coatings.

  3. Removing adhesives or contaminants.

  4. Grinding the concrete.

  5. Repairing cracks or damaged areas.

  6. Vacuuming the floor.

  7. Applying the specified coating system.

The required surface profile should always match the coating manufacturer's specifications.

Diamatic 555 for Glue Removal

Glue and adhesive residue can be difficult to remove with ordinary grinding diamonds.

Depending on the material, specialized tooling such as PCD may provide faster removal.

The operator should avoid grinding unnecessarily deep into the concrete once the adhesive has been removed.

After aggressive removal, another grinding pass may be necessary to refine the surface.

Diamatic 555 for Floor Leveling

The BMG-555 can also help remove high areas and improve floor flatness.

Applications may include preparing concrete for:

  • Epoxy

  • Tile

  • Flooring

  • Polished concrete

  • Industrial coatings

However, major structural elevation problems may require additional equipment or repair methods.

A floor grinder is primarily designed to remove material rather than fill low areas.

Diamatic 555 for Terrazzo

The Diamatic 555 can also be used for certain terrazzo grinding and polishing applications when equipped with appropriate tooling.

Terrazzo requires careful abrasive selection because the surface contains aggregate and binder materials that can respond differently to grinding.

The tooling sequence should match the specific terrazzo system.

Diamatic 555 vs. Small Floor Grinder

A small grinder offers advantages for:

  • Bathrooms

  • Small garages

  • Closets

  • Tight rooms

  • Edge work

  • Residential projects

The Diamatic 555 becomes more attractive as floor area increases.

Its approximately 22-inch grinding path allows contractors to cover substantially more floor with each pass.

This can improve productivity on larger commercial and industrial projects.

Diamatic 555 Parts

Replacement parts are an important consideration, particularly when purchasing a used BMG-555.

Common wear and service components can include:

  • Drive belts

  • Bearings

  • Grinding plates

  • Pulleys

  • Wheels

  • Dust shroud components

  • Brushes

  • Electrical controls

  • Motor components

  • Fasteners

The machine serial number should be used when ordering parts because specifications may vary between production versions.

Diamatic 555 Drive Belt

The drive belt transfers power through the grinder's drive system.

A worn or damaged belt may cause:

  • Reduced grinding performance

  • Slipping

  • Unusual noises

  • Inconsistent head rotation

  • Complete loss of grinding-head movement

Belts should be inspected periodically and replaced when excessive wear, cracking, stretching, or damage is visible.

Diamatic 555 Maintenance

Regular maintenance can extend machine life and reduce unexpected downtime.

Before operation, inspect:

  • Grinding plates

  • Diamond tooling

  • Drive belt

  • Bearings

  • Dust shroud

  • Electrical cable

  • Vacuum hose

  • Wheels

  • Fasteners

  • Motor

Concrete grinding creates continuous vibration, making regular hardware inspection particularly important.

Why Is My Diamatic 555 Not Grinding Fast Enough?

Slow grinding can have several causes.

Possible problems include:

  • Incorrect diamond bond

  • Glazed diamonds

  • Worn tooling

  • Extremely hard concrete

  • Incorrect machine speed

  • Insufficient grinding pressure

Before assuming the machine has a mechanical problem, inspect the diamond tooling.

Incorrect diamonds are one of the most common causes of poor grinding performance.

Why Is My Diamatic 555 Producing Excessive Dust?

Check the entire dust-control system.

Potential causes include:

  • Clogged vacuum filter

  • Damaged hose

  • Loose hose connection

  • Worn dust-shroud brushes

  • Insufficient vacuum airflow

  • Overloaded dust collector

Good dust extraction requires both a properly functioning grinder shroud and a correctly sized dust collector.

Why Is My Diamatic 555 Vibrating?

Excessive vibration may indicate:

  • Uneven tooling

  • Missing diamond segments

  • Damaged grinding plate

  • Loose hardware

  • Worn bearings

  • Drive-system problems

Stop the machine and inspect it if vibration suddenly increases.

Buying a Used Diamatic 555

A used Diamatic 555 can provide significant value for a concrete contractor, but condition matters.

Inspect:

  • Motor

  • Planetary system

  • Grinding heads

  • Tool plates

  • Bearings

  • Belt

  • Pulleys

  • Electrical system

  • Dust shroud

  • Wheels

  • Frame

Operate the grinder before purchasing whenever possible.

Listen for unusual bearing noises, grinding sounds, or excessive vibration.

Frequently Asked Questions About the Diamatic 555

What is the Diamatic 555?

The Diamatic 555, also known as the BMG-555, is a professional planetary concrete floor grinder and polisher used for surface preparation, grinding, coating removal, and polishing.

What is the grinding width of the Diamatic 555?

The machine has an approximately 555 mm, or 22-inch, working width.

Is the Diamatic 555 a planetary grinder?

Yes. It uses a three-head planetary grinding system.

Can the Diamatic 555 grind concrete?

Yes. Concrete grinding is one of its primary applications.

Can the Diamatic 555 polish concrete?

Yes. Appropriate polishing tooling can be installed for progressively refining concrete.

Can the Diamatic 555 remove epoxy?

Yes. Diamond or PCD tooling can be selected depending on the coating.

Can the Diamatic 555 remove glue?

Yes. The machine can be configured with aggressive tooling for adhesive and glue removal.

Can the Diamatic 555 use PCD tooling?

Yes. PCD tooling can be used for aggressive removal of compatible coatings and adhesives.

Can the Diamatic 555 grind wet?

Yes. The machine can be used for appropriate wet-grinding applications.

Can the Diamatic 555 grind dry?

Yes. Dry grinding with an appropriate dust extractor is one of its common applications.

Does the Diamatic 555 need a vacuum?

A suitable industrial dust extractor should be used for dry concrete grinding to capture grinding dust and help control airborne particles.

How wide is the Diamatic BMG-555?

The grinding path is approximately 22 inches or 555 mm.

How much does a Diamatic 555 weigh?

Some BMG-555 PRO versions weigh approximately 600 pounds. Exact specifications should be confirmed for the individual machine.

What voltage does the Diamatic 555 use?

Electrical requirements vary. Some versions operate on approximately 230-volt single-phase power. Check the machine's data plate before connecting electrical power.

What diamonds should I use on a Diamatic 555?

Diamond selection depends on concrete hardness and the application. Hard concrete generally requires a softer-bond diamond, while soft or abrasive concrete generally requires a harder bond.

Can the Diamatic 555 prepare concrete for epoxy?

Yes. Surface preparation before epoxy installation is one of the machine's useful applications.

Is the Diamatic 555 good for commercial floors?

Yes. Its approximately 22-inch working width makes it well suited for medium and large commercial floor preparation projects.

Can the Diamatic 555 be used on terrazzo?

Yes, when equipped with appropriate tooling and operated according to the requirements of the specific terrazzo surface.

Why are my Diamatic 555 diamonds glazing?

The concrete may be too hard for the diamond bond being used. A softer-bond diamond may be required to expose fresh cutting particles.

Why are my diamonds wearing too quickly?

The concrete may be soft or highly abrasive, or the diamond bond may be too soft for the application.

What should I check when buying a used Diamatic 555?

Inspect the motor, planetary drive, grinding heads, bearings, belt, pulleys, electrical controls, dust shroud, wheels, frame, and tooling system.

Is the Diamatic 555 still a good concrete grinder?

A properly maintained Diamatic 555 remains a capable professional concrete grinding platform. Its approximately 22-inch working width, three-head planetary system, multiple tooling options, wet and dry grinding capability, and ability to handle concrete grinding, coating removal, surface preparation, and polishing make the BMG-555 useful for contractors who need a versatile mid-size floor grinder.


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