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Bronze knot wire end brush 1-1/8 inch diameter silver finish quarter inch shank

Weiler

Weiler 93803 Bronze Knot Wire End Brush 1-1/8

SKU CH-Q79K-1MP2X

Bronze knot wire end brush fits straight grinders, drills, impact drivers and pencil grinders via a 1/4 in round shank and runs up to 22,000 RPM

  • Bronze wire resists sparking on carbon steel
  • 02 in standard twist knots clean aggressively
  • 1-1/8 in diameter reaches tight areas
  • 1/4 in round shank fits drills and grinders
  • 22,000 RPM maximum speed handles heavy use

Bronze knot end brush

The Weiler 93803 is a 1-1/8 inch diameter end brush with bronze twisted knot wire bristles. It mounts on a 1/4 inch round shank for use with straight grinders, drills, impact drivers or pencil grinders. The brush runs at up to 22,000 RPM for surface preparation tasks. Its 7/8 inch bristle length reaches into recesses and holes.

Upgrade from crimped wire

Knotted wire construction delivers more aggressive cutting action than crimped wire brushes. The bronze material prevents ferrous contamination on stainless steel, aluminum and other non-ferrous metals. Switch when you need faster material removal on carbon steel without embedding steel particles. The twist knot design maintains stiffness at high speed.

Capacity and headroom

The 1-1/8 inch face cleans weld seams, removes scale and deburrs internal diameters in a single pass. Bronze wire resists loading on soft metals but wears faster than steel on heavy rust. Maximum 22,000 RPM suits most pneumatic and electric tools. The 3 inch overall length fits standard collets and chucks.

Highlights

  • Bronze wire resists sparking on carbon steel
  • 02 in standard twist knots clean aggressively
  • 1-1/8 in diameter reaches tight areas
  • 1/4 in round shank fits drills and grinders
  • 22,000 RPM maximum speed handles heavy use

Specifications

BrandWEILER

Questions about this item

What size round shank does the Weiler 93803 end brush use?

The brush has a 1/4 in round shank that fits standard straight grinders, drills, impact drivers and pencil grinders.

How do you attach the brush to a tool, and what mistake should you avoid?

Insert the 1/4 in shank fully into the collet or chuck and tighten securely; the common error is leaving the shank partially seated, which causes vibration at speed.

When does the bronze knot wire brush need replacing?

Replace it when the 0.02 in bronze wires wear down, break off or the knot tufts lose their shape, reducing cleaning effectiveness on carbon steel.

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