Product Specification
7" X 7/8" SURFACE PREPARATION WHEEL
Benchmark Abrasives 7" x 7/8" Surface Preparation Wheels are designed for controlled cleaning, blending, scratch refinement, and finishing across larger surface areas. The non-woven abrasive construction conforms to the workpiece and helps condition metal, refine existing scratch patterns, and create a more uniform finish without the aggressive stock removal of a conventional coated abrasive disc.
Choose Fine maroon aluminum oxide when more cleaning and scratch blending are required, or Very Fine gray silicon carbide for lighter finishing and a finer satin surface. The 7" diameter provides broad coverage for larger workpieces, while the 7/8" center bore is designed for compatible 7" angle grinders using the correct centering flange, clamping hardware, and guard.
Quantity: 1 Wheel
Mount: 7/8" Bore
Product Specifications
| Specification |
Details |
| Diameter |
7" |
| Bore |
7/8" |
| Construction |
Non-Woven Surface Preparation |
| Backing |
Plastic |
| Grade Options |
Fine / Very Fine |
| Fine |
|
| Fine Abrasive |
Aluminum Oxide |
| Fine Color |
Maroon |
| Grit |
Approximately 150 grit* |
| Very Fine |
|
| Very Fine Abrasive |
Silicon Carbide |
| Very Fine Color |
Gray |
| Grit |
Approximately 320 grit* |
| Maximum RPM |
8,500 |
| Quantity |
1 Wheel |
*The approximately 150 and 320 grit comparisons are Benchmark references for general grade selection and are not standardized sandpaper P-grit designations.
Product Features
- Non-woven construction for controlled cleaning, blending, and finishing
- Fine maroon aluminum oxide for stronger cleaning and scratch refinement
- Very Fine gray silicon carbide for lighter finishing and finer satin surfaces
- 7" diameter provides efficient coverage on larger work areas
- Plastic backing supports the non-woven abrasive structure
- 7/8" center bore mounts with compatible angle-grinder flange and clamping hardware
- Designed for surface conditioning rather than aggressive stock removal
Materials & Applications
Best For:
- Cleaning and conditioning larger metal surfaces
- Scratch blending and refinement
- Stainless steel finishing
- Light rust and oxidation removal
- Surface preparation
- Satin finishing
- Preparing surfaces for additional finishing or polishing steps
Fine - Supported Materials:
- Steel
- Stainless steel
- Copper
- Aluminum
- Other compatible metals
- Wood
- Plastic
- Fiberglass
- Stone
Very Fine - Supported Materials:
- Steel
- Stainless steel
- Aluminum
- Copper
- Other compatible metals
- Wood
- Composites
- Marble
Choose Fine for cleaning, scratch blending, and stainless steel finishing. Choose Very Fine for light finishing and satin finishes on aluminum.
Machine Compatibility
Designed for compatible 7" angle grinders that accept 7/8" bore accessories and operate within the wheel's 8,500 RPM maximum.
This wheel uses a 7/8" center bore, not a 5/8"-11 threaded hub. Mount it using the grinder's proper centering flange, compatible locknut or clamping hardware, and correct 7" guard. Always verify that the wheel seats securely and that the complete mounting arrangement is appropriate for the machine.
Maximum Wheel Speed: 8,500 RPM
Tips for Better Performance
- Use light, controlled pressure and allow the non-woven abrasive to condition the surface.
- Keep the wheel moving to maintain a consistent blended finish.
- Use the 7" diameter where broad surface coverage is beneficial.
- Choose Fine when more cleaning and scratch refinement are required.
- Choose Very Fine when the goal is lighter finishing or a finer satin appearance.
- Test on a small area when matching an existing finish.
Safety Tips & Techniques
- Never exceed the maximum operating speed of 8,500 RPM.
- Verify that the grinder is designed for 7" accessories and the correct accessory type.
- Use the correct centering flange, clamping hardware, and 7" guard.
- Confirm that the wheel is properly seated before operating the tool.
- Inspect the wheel before use and replace damaged or excessively worn accessories.
- Secure the workpiece before beginning.
- Use light, controlled pressure.
- Always wear appropriate eye, hearing, respiratory, and hand protection.
- Follow the tool manufacturer's operating and safety instructions.
Accessory rated speed must meet or exceed the tool's maximum speed; selecting a lower operating speed does not by itself establish compatibility.
