Overview
The ProStar PRS53046 knotted wire cup brush delivers rugged, reliable performance for metalworking and fabrication applications. This 6-inch brush features high-strength steel wire construction with a 0.025-inch fill diameter, designed for aggressive metal surface preparation. The 5/8-11NC threaded arbor mounts directly to portable angle grinders, bench grinders, and CNC machines for fast, controlled material removal.
Key Features
- Knotted wire design for low-to-medium flexibility and aggressive cutting action
- 6-inch brush diameter for large surface area coverage
- 0.025-inch steel fill wire for heavy-duty performance
- 5/8-11NC threaded arbor hole for universal compatibility
- Fast, efficient cleaning with minimal operator fatigue
- Suitable for use on portable tools and CNC machinery
Technical Specifications
- Brush Diameter: 6 inches (150mm)
- Fill Diameter: 0.025 inches
- Fill Material: Steel (hardened for durability)
- Wire Type: Knotted
- Threaded Arbor: 5/8-11NC
- Trim Length: 1-3/4 inches
- Knot Pattern: Standard knot configuration for controlled wire action
Typical Applications
The ProStar PRS53046 excels in demanding metalworking operations including:
- Removing weld scale and spatter from steel fabrications
- Rust and corrosion removal from machinery and structural steel
- Paint and coating removal during refinishing or restoration
- Surface preparation and cleaning prior to welding, painting, or coating
- Deburring and edge blending on machined and stamped parts
- CNC machine tool cleaning and maintenance
Compatibility & Replacements
Compatible With
- Portable angle grinders (4.5-inch and 5-inch)
- Bench grinders with 5/8-11NC chuck
- CNC milling and turning centers with spindle prep capability
- Industrial surface preparation equipment
- Pneumatic and electric-powered portable tools
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The ProStar PRS53046 is the standard 6-inch heavy-duty knotted wire cup brush in the ProStar lineup and is widely used as a direct replacement in industrial metalworking shops.
Works With
- Standard 5/8-11NC spindle threads (ISO metric and ANSI threads)
- Portable power tool platforms (standard grinders, sanders)
- Industrial surface preparation systems and equipment
- Manual and CNC machining centers with brush-capable spindles








