HELIX® PLANETARY GRINDER

Model: HELIX

Designed for small jobs and tough-to-reach spaces, this 16-inch planetary grinder creates the perfect profile for new coatings. This easy-to-operate machine features an edge grinder, dual-speed operation, an adjustable handle, and a floating dust skirt for maximum efficiency.

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Features

  • Full adjustable handle accommodates a range of operating positions
  • Quick-release levers allow the machine to be separated into two pieces for easy transport
  • Capable of edge grinding on the left or right side of the machine by rotating the side of the dust skirt up, allowing the operator to grind within a half inch of the wall
  • Removable weights give the operator freedom to increase of decrease head pressure when grinding
  • 16-inch grinding plate incorporates a floating tooling assembly that allows the cutting head to follow the contours of the floor; the tooling assembly rotates 180 degrees for easy tooling changes
  • LED light illuminates the surface directly behind the machine
  • Dual-speed motor increases the versatility of this machine; operating at high or low speed

Specifications

Specifications Standard Metric
Width 17.5" 44.5 cm
Disc Size 16" 41 cm
Max. Height 47.6" 120.9 cm
Min. Height 29.4" 74.4 cm
Max. Length 47" 119.4 cm
Weight 206 lb 93 kg
Grinding Pressure 128 lb 58 kg
Motor RPM High Speed: 3200/1800 [for 60 Hz] Low Speed: 2667/1500 [for 50 Hz]
HP 1.5
Amps 120 V/60 HZ/12 amps 230 V/5 Hz/6.3 amps
Drum RPM High Speed: 291/163 [for 60 Hz] Low Speed: 243/136 [for 50 Hz]
Motor Phase Single

PCDs & Carbides

Part # Name Standard Metric Description Fits    
9555 9555 2-UP PCD- MICRO

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. Remove heavy stock, adhesive, thin set, and epoxies

HELIX, 8274-4
9556 9556 2-UP PCD- 1/2 ROUND

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. Removes heavy stock, adhesive,thin set, and epoxies

HELIX, 8274-4
9557 9557 4-UP PCD- MICRO

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. Removes heavy stock, adhesive, thin set, and epoxies

HELIX, 8274-4
7268-2 7268-2 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. Removes coatings, glues, thin set, and thin mastics

HELIX, 8274-4

Diamonds

Part # Name Standard Metric Description Fits    
9522-50 9522-50 BRAZED TRAPEZOID DIAMOND

50 Grit: Prep concrete for reapplication and polishing. 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.

HELIX, 8274-4
9507-30 9507-30 METAL BOND DIAMOND - HALF BAR

30 Grit: Remove sealers and preps concrete for polishing. 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.

HELIX, 8274-4
9235-50 9235-50 5-INCH BRAZED DIAMOND

50 Grit: Create a "broom finish" on soft concrete surfaces; first stage to polishing concrete. 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.

HELIX, 8274-4
9508-30SB 9508-30SB METAL BOND DIAMOND - FULL BAR

30 Grit: Remove various coatings, and profiles on HARD concrete only. 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.

HELIX, 8274-4
9235-100 9235-100 5-INCH BRAZED DIAMOND

100 Grit: Create a "broom finish" on soft concrete surfaces; first stage to polishing concrete. 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.

HELIX, 8274-4
9522-16 9522-16 BRAZED TRAPEZOID DIAMOND

16 Grit: Remove paint, stain, and sealers; preps concrete for reapplication. 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.

HELIX, 8274-4
9507-30HB 9507-30HB METAL BOND DIAMOND - HALF BAR

30 Grit: Remove various coatings, and profiles on SOFT concrete only. 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.

HELIX, 8274-4
9522-30 9522-30 BRAZED TRAPEZOID DIAMOND

30 Grit: Prep concrete for reapplication and polishing. 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.

HELIX, 8274-4
9507-6 9507-6 METAL BOND DIAMOND - HALF BAR

3 Grit: Remove thin epoxy, paint, adhesives and sealers. 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.

HELIX, 8274-4
9510-30 9510-30 METAL BOND DIAMOND - PROFILING DIAMOND

30 Grit: Prep high-/moderate-density concrete for reapplication. 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.

HELIX, 8274-4
9508-16 9508-16 METAL BOND DIAMOND - FULL BAR

16 Grit: Remove epoxy as well as heavy and light sealers. 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.

HELIX, 8274-4
9522-100 9522-100 BRAZED TRAPEZOID DIAMOND

100 Grit: Prep concrete for polishing. 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.

HELIX, 8274-4
9508-16SB 9508-16SB METAL BOND DIAMOND - FULL BAR

16 Grit: Remove various coatings, and profiles on HARD concrete only. 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.

HELIX, 8274-4
9510-50 9510-50 METAL BOND DIAMOND - PROFILING DIAMOND

50 Grit: Prep concrete for polishing. 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.

HELIX, 8274-4
9507-12 9507-12 METAL BOND DIAMOND - HALF BAR

12 Grit: Remove thin epoxy, paint, adhesives and sealers. 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.

HELIX, 8274-4
9508-30 9508-30 METAL BOND DIAMOND - FULL BAR

30 Grit: Remove light sealers. 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.

HELIX, 8274-4
9235-16 9235-16 5-INCH BRAZED DIAMOND

16 Grit: Remove thin epoxy, paint, stain, adhesives, and heavy sealers. 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.

HELIX, 8274-4
9507-16 9507-16 METAL BOND DIAMOND - HALF BAR

16 Grit: Remove thin epoxy, paint, adhesives and sealers. 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.

HELIX, 8274-4
9235-30 9235-30 5-INCH BRAZED DIAMOND

30 Grit: Remove adhesives, heavy and light sealers. 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.

HELIX, 8274-4
9510-120 9510-120 METAL BOND DIAMOND - PROFILING DIAMOND

120 Grit: Prep concrete for polishing. 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.

HELIX, 8274-4
9504-25 9504-25 METAL BOND DIAMOND - SUPER SOFT, SINGLE BAR DIAMOND INSERT

25 Grit: Extremely aggressive coating removal with supersoft matrix for hard concrete or heavy cure and seal treatments, perfect for breaking surface tension. 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.

HELIX, 8274-4
9507-16HB 9507-16HB METAL BOND DIAMOND - HALF BAR

16 Grit: Remove various coatings, and profiles on SOFT concrete only. 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.

HELIX, 8274-4

Polishing Pads

Part # Name Standard Metric Description Fits    
9267-3000 9267-3000 5-INCH POLISHING PAD

3000 Grit: Follow 9267-1500 to create a "mirror" polished concrete. 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.

HELIX, 8274-4
9267-800 9267-800 5-INCH POLISHING PAD

800 Grit: Follow 9267-400 to create a "shine" polished concrete. 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.

HELIX, 8274-4
9267-50 9267-50 5-INCH POLISHING PAD

50 Grit: Achieve a "no reflection" polished concrete. 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.

HELIX, 8274-4
9267-1500 9267-1500 5-INCH POLISHING PAD

1500 Grit: Follow 9267-800 to create a "high shine" polished concrete. 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.

HELIX, 8274-4
9267-100 9267-100 5-INCH POLISHING PAD

100 Grit: Follow 9267-50 to create a "little reflection" polished concrete. 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.

HELIX, 8274-4
9267-200 9267-200 5-INCH POLISHING PAD

200 Grit: Follow 9267-100 to create a "moderate reflection" polished concrete. 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.

HELIX, 8274-4
9267-400 9267-400 5-INCH POLISHING PAD

400 Grit: Follow 9267-200 to create a "satin reflection" polished concrete. 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.

HELIX, 8274-4

allParts

Part # Name Standard Metric Description Fits    
9521 9521 CARBIDES & TOOLING HOLDER

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. Use to attach the above tooling to National's grinders

HELIX, 8274-4
403162 403162 FLOATING DUST SKIRT HELIX
9550 9550 SCREW

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. Use to attach tooling to the above holder

HELIX, 8274-4
402757 402757 TOOLING ASSEMBLY HELIX
403223 403223 OPERATING MANUAL HELIX
403315 403315 SERVICE MANUAL HELIX
402761 402761 MAGNETIC TOOLING HOLDER HELIX
402757 402757 HELIX GRIND & SCRAPE PLATE

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

HELIX
8270 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.

HELIX, 8274-4
Lord & James provides critical training for every person working in proximity to our machines, improving safety and efficiency, as well as reducing the risk of machine damage. For additional technical assistance, visit our resource library.