Product Specification
4-1/2" BRISTLE BRUSH DISC
Benchmark Abrasives 4-1/2" bristle brushes use aluminum oxide abrasive embedded throughout flexible bristles to provide controlled cleaning, coating removal, light deburring, blending, and surface conditioning across larger metal surfaces. The broad 4-1/2" working diameter makes this brush well suited for removing rust, paint, oxidation, varnish, and surface contamination with flexible bristles that conform to the surface.
Available in 36, 50, 80, and 120 grit, this bristle brush gives you options ranging from extra-coarse cleaning on steel and other ferrous metals to finer conditioning of aluminum and other nonferrous metals. Use light, controlled pressure and allow the abrasive bristles to do the work.
Product Specifications
| Specification | Details |
|---|---|
| Brush Diameter | 4-1/2" |
| Abrasive Grain | Aluminum Oxide |
| Available Grits | 36, 50, 80, 120 |
| Grit Colors | 36 Grit – Brown; 50 Grit – Green; 80 Grit – Yellow; 120 Grit – White |
| Maximum RPM | 13,500 RPM |
| Quantity | 1 Brush |
| Mounting Type | Verify Before Publication – Current source information conflicts |
Features
- Flexible abrasive bristles conform to the work surface for controlled cleaning and conditioning
- Aluminum oxide abrasive provides dependable cutting action across a wide range of metal applications
- Broad 4-1/2" working diameter covers larger surfaces efficiently
- Four grit options provide a progression from extra-coarse cleaning to finer surface conditioning
- Effective for removing rust, paint, oxidation, varnish, and surface contamination
- Suitable for cleaning, light deburring, blending, finishing, and surface preparation
Applications
Use the 4-1/2" Bristle Brush for:
- Rust and oxidation removal
- Paint and coating removal
- Varnish removal
- Surface-contaminant cleanup
- Light deburring
- Surface blending
- Metal cleaning and conditioning
- Surface preparation before coating or finishing
For best results, use light pressure rather than forcing the bristles into the workpiece.
Materials
Suitable applications include:
- Steel
- Cast iron
- Wrought iron
- Titanium
- Nickel and appropriate nickel alloys
- Aluminum
- Copper
- Zinc alloys
- Magnesium
Always test on a small area when surface appearance or dimensional preservation is critical.
Machine Compatibility
Machine compatibility should not be published until the mounting system is physically verified.
Current source information conflicts between a 5/8"-11 threaded mount and an R-Type quick change mount. Because these systems require different machines and hardware, named compatible grinders or holders should not be listed until the actual brush hub is confirmed.
Once the mount is verified, machine compatibility should be based on:
- Correct mounting interface
- 4-1/2" accessory capacity
- Required guard and clearance
- Tool speed within the brush's 13,500 RPM maximum
- Any manufacturer requirements for the specific accessory type
Safety Tips
- Do not exceed the 13,500 RPM maximum speed of the brush.
- Verify the correct mounting system before installing the brush.
- Follow the lowest RPM rating of all components in the tool-and-accessory assembly.
- Inspect the brush and mounting hardware before each use.
- Do not use damaged, cracked, excessively worn, or improperly mounted components.
- Use light, controlled pressure and allow the abrasive bristles to perform the cutting action.
-
Wear appropriate PPE, including safety glasses with side shields, a face shield when needed, hearing protection, gloves, and suitable respiratory protection when required.
- Keep required machine guards and safety equipment in place.
- Secure the workpiece before beginning operation.