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Grinding and Polishing Tooling

PCDs and Carbides

Designed for aggressive concrete stock removal as well as coatings, glues, mastics, and other floor covering adhesives. PCDs and carbides can be used with all National planetary grinder machines.

Part NoDescriptionBest For...
9555

2-up PCD-Micro

Removes heavy stock, adhesive, and epoxies
9557

4-up PCD-Micro

Removes heavy stock, adhesive, and epoxies
9554

1-up PCD 1/2 round

Removes heavy stock, adhesive, and epoxies
9556

2-up PCD 1/2 round

Removes heavy stock, adhesive, and epoxies
7268-2

Carbides

Removes coatings, glues, and thin mastics
9521

Carbide and tooling holder

Use to attach the above tooling to National grinders
9550

Screw

Use to attach tooling to the above holder

Metal Bond Diamonds

Used for light, medium, and aggressive concrete grinding and profiling as well as sealer and top coat removal. Can be used for both residential and industrial applications. Perfect for leveling concrete high spots and repairing imperfections as well as creating the perfect profile for accepting new coatings, epoxies, or preparing concrete for polishing. Metal bond diamonds can be used with all National’s planetary and passive planetary grinders.

Part NoDescriptionBest For...
9508-16

16-grit full bar diamond insert

Removes epoxy as well as heavy and light sealers
9508-16SB

16-grit full bar diamond insert

Removes various coatings, and profiles on HARD concrete only
9508-30

30-grit full bar diamond insert

Removes light sealers
9508-30SB

30-grit full bar diamond insert

Removes various coatings, and profiles on HARD concrete only
9507-6

3-grit half bar diamond insert

Removes thin epoxy, paint, adhesives, and sealers
9507-12

12-grit half bar diamond insert

Removes thin epoxy, paint, adhesives, and sealers
9507-16

16-grit half bar diamond insert

Removes thin epoxy, paint, adhesives, and sealers
9507-16HB

16-grit half bar diamond insert

Removes various coatings, and profiles SOFT concrete only.
9507-30

30-grit half bar diamond insert

Removes sealers and preps concrete for polishing
9507-30HB

30-grit half bar diamond insert

Removes various coatings, and profiles SOFT concrete only.
9510-30

30-grit profiling diamond inserts

Preps high/moderate density concrete for reapplication
9510-50

50-grit profiling diamond inserts

Preps concrete for polishing
9510-120

120-grit profiling diamond inserts

Preps concrete for polishing
9504-25

25-grit super segment diamond inserts

Extremely aggressive coating removal with supersoft matrix for hard concrete or heavy cure and seal treatments

Trapezoid Diamonds

Used primarily in light industrial and residential applications for concrete grinding and profiling as well as sealer and top coat removal. Provide excellent surface profiles for new coatings, epoxies, or stains. Also create exceptional profiles for concrete preparation and restoration prior to polishing concrete. Brazed trapezoids can be used with all National planetary grinders.

Part NoDescriptionBest For...
9522-16

16-grit brazed trapezoid diamond

Removes paint, stain, and sealers; prep concrete for reapplication
9522-30

30-grit brazed trapezoid diamond

Preps concrete for reapplication and polishing
9522-50

50-grit brazed trapezoid diamond

Preps concrete for reapplication and polishing
9522-100

100-grit brazed trapezoid diamond

Preps concrete for polishing

5-Inch Brazed Diamonds

Used primarily in industrial applications for medium to aggressive concrete grinding and profiling as well as sealer and top coat removal. Perfect for concrete preparation and restoration prior to concrete polishing. In addition, brazed diamonds effortlessly remove stains and imperfections from exterior wood decking while simultaneously profiling wood for receiving new stains and/or sealers. These polishing pads are for use with all National planetary grinders, except for the 92650.

Part NoDescriptionBest For...
9235-16

16-grit

Removes thin epoxy, paint, stain, adhesives, and heavy sealers
9235-30

30-grit

Removes adhesives, heavy and light sealers
9235-50

50-grit

Creates a “broom finish” on soft concrete surfaces; first stage to polishing concrete
9235-100

100-grit

Creates a “broom finish” on soft concrete surfaces; first stage to polishing concrete

5-Inch Polishing Pads

Used for polishing concrete to various finishes and shines. Resin bond. Available in escalating grits. These polishing pads are for use with all National’s planetary grinders, except for the 92650.

Part NoDescriptionBest For...
9267-50

50-grit

Achieve a “no reflection” polished concrete
9267-100

100-grit

Follows 9267-50 to create a “little reflection” polished concrete
9267-200

200-grit

Follows 9267-100 to create a “moderate reflection” polished concrete
9267-400

400-grit

Follows 9267-200 to create a “satin reflection” polished concrete
9267-800

800-grit

Follows 9267-400 to create a “shine” polished concrete
9267-1500

1500-grit

Follows 9267-800 to create a “high shine” polished concrete
9267-3000

3000-grit

Follows 9267-1500 to create a “mirror” polished concrete

402757 Helix Grind and Scrape Plate

The Deluxe Grind and Scrape Plate is the most versatile prepping plate in the industry. This magnetic tooling system converts from aggressive grinding and scraping to passive planetary for diamond grinding, carbide/PCD scraping, polishing, and sanding. The Morflex couplers allow the plate to follow the contour of the floor.

  • Fits the Helix
  • Rigid plate mount allows for aggressive grinding and scraping
  • Passive planetary tooling creates random scratch pattern
  • Polishes and sands without leaving swirl marks
  • Morflex couplers reduce the shock to the operator and the machine
  • Follows the contour of the floor for uniform operation in low spots
  • For use with machines large enough to accept a 16-inch plate with a standard 3¼-inch hub
  • Converts from grinding to scraping to polishing to sanding in seconds
  • Includes three satellite plates that are easily attachable/detachable with cotter pins
  • Has a locking knob that makes the mounting/dismounting of the plate quick and easy

9292 Floating Head Assembly

Improve machine performance, reach low spots, and level high spots by following surface undulation.

  • Fits the 8274-4
  • Tooling flexes for a uniform and consistent scratch pattern
  • Tooling plates attach directly onto mounted floating assembly
  • Accommodates all magnetic tooling types, including carbides and PCDs, 5-inch resin polishing pads, 5-inch brazed diamond disks, magnetic diamond tooling, and brazed diamond trapezoids
  • Three assemblies required

8270 Concrete Hardness Tester

Unlike other mineral hardness testing tools, the 8270 is made of metals and alloys of hardness values equal to 2 through 9 on the Mohs hardness scale, so they can be easily ground to sharp points that will not break off. Set includes 8 points, streak plate for testing color, hardness plates (3.5 and 5.5), magnet for detecting magnetic rock, grindstone to keep points sharp, hardness tables, and instructions, all in a compact wooden case.

73250 Tooling Holder Mounting Screw

73214 Floating Isolator Assembly Mounting Screw

401882 Morflex coupler

3-Inch Hybrid Resin/Metal Pads

Long-lasting and ideal for heavier machines, the unique diamond grit provides more aggressive stock removal than traditional pads with a more subtle scratch pattern. A radial edge allows for smooth riding over lippage and joints.

Part NoDescription
9296-30

30-grit hybrid resin/metal pad

9296-50

50-grit hybrid resin/metal pad

9296-100

100-grit hybrid resin/metal pad

9296-200

200-grit hybrid resin/metal pad

3-Inch Resin Polishing Pads

Long-lasting and ideal for heavier machines, resin pads create a high-gloss finish. A radial edge allows for smooth riding over lippage and joints.

Part NoDescription
9298-50

50-grid resin polishing pad

9298-100

100-grit resin polishing pad

9298-200

200-grit resin polishing pad

9298-400

400-grit resin polishing pad

9298-800

800-grit resin polishing pad

9298-1500

1500-grit resin polishing pad

9298-3000

3000-grit resin polishing pad

GP Metal Bond Diamonds

For light, medium, and aggressive concrete grinding and profiling as well as sealer and top coat removal. These diamonds can be used for both residential and industrial applications and are perfect for leveling concrete high spots, repairing imperfections, and creating the perfect profile for accepting new coatings and epoxies, or preparing concrete for polishing.

Part NoDescriptionAssociated Product(s)
403323

20 Grit, 2 Seg, Soft Bond, Left Hand

GP700 CONCRETE GRINDER AND POLISHER
GP3000 CONCRETE GRINDER AND POLISHER
403324

20 Grit, 2 Seg, Soft Bond, Right Hand

GP700 CONCRETE GRINDER AND POLISHER
GP3000 CONCRETE GRINDER AND POLISHER
403325

20 Grit, 2 Seg, Medium Bond, Left Hand

GP700 CONCRETE GRINDER AND POLISHER
GP3000 CONCRETE GRINDER AND POLISHER
403326

20 Grit, 2 Seg, Medium Bond, Right Hand

GP700 CONCRETE GRINDER AND POLISHER
GP3000 CONCRETE GRINDER AND POLISHER
403327

20 Grit, 2 Seg, Hard Bond, Left Hand

GP700 CONCRETE GRINDER AND POLISHER
GP3000 CONCRETE GRINDER AND POLISHER
403328

20 Grit, 2 Seg, Hard Bond, Right Hand

GP700 CONCRETE GRINDER AND POLISHER
GP3000 CONCRETE GRINDER AND POLISHER
403329

40 Grit, 2 Seg, Soft Bond, Left Hand

GP700 CONCRETE GRINDER AND POLISHER
GP3000 CONCRETE GRINDER AND POLISHER
403330

40 Grit, 2 Seg, Soft Bond, Right Hand

GP700 CONCRETE GRINDER AND POLISHER
GP3000 CONCRETE GRINDER AND POLISHER
403331

40 Grit, 2 Seg, Medium Bond, Left Hand

GP700 CONCRETE GRINDER AND POLISHER
GP3000 CONCRETE GRINDER AND POLISHER
403332

40 Grit, 2 Seg, Medium Bond, Right Hand

GP700 CONCRETE GRINDER AND POLISHER
GP3000 CONCRETE GRINDER AND POLISHER
403333

70 Grit, 2 Seg, Soft Bond, Left Hand

GP700 CONCRETE GRINDER AND POLISHER
GP3000 CONCRETE GRINDER AND POLISHER
403334

70 Grit, 2 Seg, Soft Bond, Right Hand

GP700 CONCRETE GRINDER AND POLISHER
GP3000 CONCRETE GRINDER AND POLISHER
403335

70 Grit, 2 Seg, Medium Bond, Left Hand

GP700 CONCRETE GRINDER AND POLISHER
GP3000 CONCRETE GRINDER AND POLISHER
403336

70 Grit, 2 Seg, Medium Bond, Right Hand

GP700 CONCRETE GRINDER AND POLISHER
GP3000 CONCRETE GRINDER AND POLISHER
403344

25 Grit, 4 Seg Hard Bond

GP700 CONCRETE GRINDER AND POLISHER
GP3000 CONCRETE GRINDER AND POLISHER
403345

40 Grit, 4 Seg, Hard Bond

GP700 CONCRETE GRINDER AND POLISHER
GP3000 CONCRETE GRINDER AND POLISHER
403346

40 Grit, 4 Seg, Medium Bond

GP700 CONCRETE GRINDER AND POLISHER
GP3000 CONCRETE GRINDER AND POLISHER
403347

80 Grit, 4 Seg, Medium Bond

GP700 CONCRETE GRINDER AND POLISHER
GP3000 CONCRETE GRINDER AND POLISHER
403348

25 Grit, 4 Seg, Soft Bond

GP700 CONCRETE GRINDER AND POLISHER
GP3000 CONCRETE GRINDER AND POLISHER
403349

40 Grit, 4 Seg, Soft Bond

GP700 CONCRETE GRINDER AND POLISHER
GP3000 CONCRETE GRINDER AND POLISHER

GP 3-Inch Resin Polishing Pads

Long-lasting and ideal for heavier machines, resin pads create a high-gloss finish. A radial edge allows for smooth riding over lippage and joints.

Part NoDescriptionAssociated Product(s)
403338

50-grit

GP700 CONCRETE GRINDER AND POLISHER
GP3000 CONCRETE GRINDER AND POLISHER
403339

100-grit

GP700 CONCRETE GRINDER AND POLISHER
GP3000 CONCRETE GRINDER AND POLISHER
403340

200-grit

GP700 CONCRETE GRINDER AND POLISHER
GP3000 CONCRETE GRINDER AND POLISHER
403341

400-grit

GP700 CONCRETE GRINDER AND POLISHER
GP3000 CONCRETE GRINDER AND POLISHER
403342

800-grit

GP700 CONCRETE GRINDER AND POLISHER
GP3000 CONCRETE GRINDER AND POLISHER
403343

1500-grit

GP700 CONCRETE GRINDER AND POLISHER
GP3000 CONCRETE GRINDER AND POLISHER

Miscellaneous GP Series Accessories

Long-lasting and ideal for heavier machines, resin pads create a high-gloss finish. A radial edge allows for smooth riding over lippage and joints.

Part NoDescription
403232

Quick change tooling plate

403337

Pad, holder

Cup Wheels

Industry-leading cup wheels come in various configurations and are ideal for coating removal, grinding high spots, and cleaning along walls. PCD wheels stay sharper longer under adverse conditions.

Part NoDescriptionSegmentThreadRPMAssociated Product(s)Best For...
3419

7"

125/8-118,5003420 7-INCH HANDHELD GRINDERRemoves epoxies, mastics, paints, and coatings
3420-2

7"

247/8, 5/8 hole8,5003420 7-INCH HANDHELD GRINDERSmooths concrete and masonry
3449

5"

97/8, 5/8 hole13,3003435 5-INCH HANDHELD GRINDERRemove epoxies, mastics, paints and coatings
3450

5"

187/8, 5/8 hole13,3003435 5-INCH HANDHELD GRINDERConcrete cleaning and planing, remove thin mil sealer
3443 PCD

7"

247/8, 5/8 hole8,5003435 5-INCH HANDHELD GRINDER
3420 7-INCH HANDHELD GRINDER
Paint grinding and removal of gummy adhesive, elastomeric, epoxy, and thin-set

3432 and 3535 velcro attachments

5-inch Velcro Brazed Diamonds - Heavy Commercial

Part NoDescriptionAssociated Product(s)Best For...
9235-16

16-grit

3535 CORNER PREPARATION AND POLISHING TOOL
3432 5-INCH VARIABLE-SPEED POLISHER
Removes thin epoxy, paint, stain, adhesives, and heavy sealers
9235-30

30-grit

3535 CORNER PREPARATION AND POLISHING TOOL
3432 5-INCH VARIABLE-SPEED POLISHER
Removes adhesives, heavy and light sealers
9235-50

50-grit

3535 CORNER PREPARATION AND POLISHING TOOL
3432 5-INCH VARIABLE-SPEED POLISHER
Creates a “broom finish” on soft concrete surfaces; first stage to polishing concrete
9235-100

100-grit

3535 CORNER PREPARATION AND POLISHING TOOL
3432 5-INCH VARIABLE-SPEED POLISHER
Creates a “broom finish” on soft concrete surfaces; first stage to polishing concrete

5-inch Velcro Concrete Polishing Pads

(Used in Sequential Order to Achieve Results)

Part NoDescriptionAssociated Product(s)Best For...
9267-50

50-grit

3535 CORNER PREPARATION AND POLISHING TOOL
3432 5-INCH VARIABLE-SPEED POLISHER
Achieve a “no reflection” polished concrete
9267-100

100-grit

3535 CORNER PREPARATION AND POLISHING TOOL
3432 5-INCH VARIABLE-SPEED POLISHER
Follows 9267-50 to create a “little reflection” polished concrete
9267-200

200-grit

3535 CORNER PREPARATION AND POLISHING TOOL
3432 5-INCH VARIABLE-SPEED POLISHER
Follows 9267-100 to create a “moderate reflection” polished concrete
9267-400

400-grit

3535 CORNER PREPARATION AND POLISHING TOOL
3432 5-INCH VARIABLE-SPEED POLISHER
Follows 9267-200 to create a “satin reflection” polished concrete
9267-800

800-grit

3535 CORNER PREPARATION AND POLISHING TOOL
3432 5-INCH VARIABLE-SPEED POLISHER
Follows 9267-400 to create a “shine” polished concrete
9267-1500

1500-grit

3535 CORNER PREPARATION AND POLISHING TOOL
3432 5-INCH VARIABLE-SPEED POLISHER
Follows 9267-800 to create a “high shine” polished concrete
9267-3000

3000-grit

3535 CORNER PREPARATION AND POLISHING TOOL
3432 5-INCH VARIABLE-SPEED POLISHER
Follows 9267-1500 to create a “mirror” polished concrete

3535 Velcro Attachments

Corner Brazed

Part NoDescription
9420-30

30-grit corner brazed

9420-50

50-grit corner brazed

9420-100

100-grit corner brazed

Corner Resin

Part NoDescription
9435-50

50-grit corner resin

9435-100

100-grit corner resin

9435-200

200-grit corner resin

9435-400

400-grit corner resin

9435-800

800-grit corner resin

9435-1500

1500-grit corner resin

9435-3000

3000-grit corner resin