National Flooring Equipment

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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 NoDescription
9555

2-up PCD-Micro

9557

4-up PCD-Micro

9554

1-up PCD 1/2 round

9556

2-up PCD 1/2 round

7268-2

Carbides

9521

Carbide and tooling holder

9550

Screw

9500

Blanks

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 and epoxies, or preparing concrete for polishing. Metal bond diamonds can be used with all National planetary and passive planetary grinders.

Part NoDescription
9508-16

16-grit full bar diamond insert

9508-16SB

16-grit full bar diamond insert

9508-30

30-grit full bar diamond insert

9508-30SB

30-grit full bar diamond insert

9507-6

3-grit half bar diamond insert

9507-12

12-grit half bar diamond insert

9507-16

16-grit half bar diamond insert

9507-16HB

16-grit half bar diamond insert

9507-30

30-grit half bar diamond insert

9507-30HB

30-grit half bar diamond insert

9510-30

30-grit profiling diamond inserts

9510-50

50-grit profiling diamond inserts

9510-120

120-grit profiling diamond inserts

9504-25

25-grit super soft, single bar diamond inserts

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 NoDescription
9522-16

16-grit

9522-30

30-grit

9522-50

50-grit

9522-100

100-grit

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.

Part NoDescription
9235-16

16-grit

9235-30

30-grit

9235-50

50-grit

9235-100

100-grit

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 planetary grinders.

Part NoDescription
9267-50

50-grit

9267-100

100-grit

9267-200

200-grit

9267-400

400-grit

9267-800

800-grit

9267-1500

1500-grit

9267-3000

3000-grit

402757 Helix® Grind and Scrape Plate

The deluxe Helix 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 sliding latch 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

73081 Helix® Safety Screw

73097 8274-4 Safety Screw

73214 Floating Isolator Assembly Mounting Screw

401882 Morflex coupler

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 NoDescription
​501000-S

Metal Bond Diamond - Soft

​501000-M

Metal Bond Diamond - Medium

​501000-H

Metal Bond Diamond - Hard

​501111-S

Metal Bond Diamond - Soft

501111-MMetal Bond Diamond - Medium
501111-HMetal Bond Diamond - Hard
501222-SMetal Bond Diamond - Soft
501222-M

Metal Bond Diamond - Medium

501222-HMetal Bond Diamond - Hard
501333-SMetal Bond Diamond - Soft
501333-MMetal Bond Diamond - Medium
501333-HMetal Bond Diamond - Hard
501020-SL20 Grit, 2 Seg, Soft Bond, Left Hand
501020-SR

20 Grit, 2 Seg, Soft Bond, Right Hand

501020-ML20 Grit, 2 Seg, Medium Bond, Left Hand
501020-MR20 Grit, 2 Seg, Medium Bond, Right Hand
501020-HL20 Grit, 2 Seg, Hard Bond, Left Hand
501020-HR20 Grit, 2 Seg, Hard Bond, Right Hand
501040-SL40 Grit, 2 Seg, Soft Bond, Left Hand
501040-SR40 Grit, 2 Seg, Soft Bond, Right Hand
501040-ML40 Grit, 2 Seg, Medium Bond, Left Hand
501040-MR40 Grit, 2 Seg, Medium Bond, Right Hand
501040-HL40 Grit, 2 Seg, Hard Bond, Left Hand
501040-HR40 Grit, 2 Seg, Hard Bond, Right Hand
501070-SL70 Grit, 2 Seg, Soft Bond, Left Hand
501070-SR70 Grit, 2 Seg, Soft Bond, Right Hand
501070-ML70 Grit, 2 Seg, Medium Bond, Left Hand
501070-MR70 Grit, 2 Seg, Medium Bond, Right Hand
501070-HL70 Grit, 2 Seg, Hard Bond, Left Hand
501070-HR70 Grit, 2 Seg, Hard Bond, Right Hand
501025-SP25 Grit, 4 Seg, Soft Bond
501025-MP25 Grit, 4 Seg, Medium Bond
501025-HP25 Grit, 4 Seg, Hard Bond
501040-SP40 Grit, 4 Seg, Soft Bond
501040-MP40 Grit, 4 Seg, Medium Bond
501040-HP

40 Grit, 4 Seg, Hard Bond

501080-SP80 Grit, 4 Seg, Soft Bond
501080-MP80 Grit, 4 Seg, Medium Bond
501080-HP80 Grit, 4 Seg, Hard Bond
501030-225/30 Grit, 2 Seg
501016-1016 Grit, 10 Seg
501030-1030 Grit, 10 Seg

GP PCDs

Part NoDescription
501020-PCD20 Grit, PCD
501000-PCD-LLeft Hand PCD, Rough Profile
501000-PCD-RRight Hand PCD, Rough Profile

GP 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
501444100-200 Grit, Semi Metal Transition Pad
501555200-400 Grit
501666400-800 Grit
501777800-1500 Grit
5018881800-3000 Grit

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 NoDescriptionSegmentThreadRPM
3419

7"

125/8-118500
3420-2

7"

247/8, 5/8 hole8500
3449

5"

97/8, 5/8 hole13,300
3450

5"

187/8, 5/8 hole13,300
3443 PCD

7"

247/8, 5/8 hole8500

Miscellaneous Hand Grinder Accessories

Part NoDescription
402254Spanner wrench for knockout cup wheels
402556Spanner wrench for threaded cup wheels

3432 and 3535 velcro attachments

5-inch Velcro Brazed Diamonds - Heavy Commercial

Part NoDescription
9235-16

16-grit

9235-30

30-grit

9235-50

50-grit

9235-100

100-grit

5-inch Velcro Concrete Polishing Pads

(Used in Sequential Order to Achieve Results)

Part NoDescription
9267-50

50-grit

9267-100

100-grit

9267-200

200-grit

9267-400

400-grit

9267-800

800-grit

9267-1500

1500-grit

9267-3000

3000-grit

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