Osborn 0007570100 Cup Brush 9/16 in Steel Straight

Product Description

The OSBORN 0007570100 is a miniature straight cup brush designed for light-duty surface preparation, deburring, and cleaning in tight spaces. The brush measures 9/16 inches in diameter and is filled with straight steel wire at 0.003 inches in diameter, providing firm but controlled abrasive action on metal surfaces. A 1/8 inch shank arbor mounts directly into a rotary tool, die grinder, or drill press. Rated to 25,000 RPM, it suits high-speed applications where precision access and consistent wire contact matter. Machinists, maintenance technicians, and fabricators commonly reach for this style of brush for weld cleanup, rust removal, and surface conditioning on small workpieces.

This cup brush is well suited for use in production shops, maintenance facilities, and field service environments. Its compact 9/16 inch diameter makes it practical for weld joint cleaning, port deburring, and interior bore prep where larger brushes cannot reach. The straight fill pattern delivers uniform contact across the cup face, making it effective on flat and slightly contoured surfaces alike. It is typically used with pneumatic or electric die grinders and rotary tools in metalworking, HVAC fabrication, and general industrial maintenance applications.

Key Features

• 9/16 inch brush diameter for access in confined areas
• 0.003 inch straight steel wire fill for firm, consistent abrasive action
• 1/8 inch shank arbor for direct chuck or collet mounting
• 25,000 RPM maximum rating suits high-speed rotary tools and die grinders
• Straight fill pattern provides uniform face contact on flat surfaces

Compatibility

Designed as a direct-mount cup brush for rotary tools, die grinders, and drill presses accepting a 1/8 inch shank. Verify that the tool spindle speed does not exceed 25,000 RPM before use.

Installation Notes

Installation is performed by a machinist, fabricator, or maintenance technician using a standard collet or keyless chuck sized for a 1/8 inch shank. Ensure the rotary tool or grinder is fully powered off and unplugged before mounting or removing the brush. Never exceed the 25,000 RPM maximum speed rating marked on the brush. Eye protection and appropriate PPE are required whenever operating wire cup brushes per standard workshop safety practices.