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Green radial bristle brush, six inches wide, half inch face, ceramic bristles

3M

3M Radial Bristle Brush 6 in 50 Grit Green

SKU CH-9HPY-ZDE62

Ceramic radial bristle brush, 6 in diameter, 50 grit for finishing aluminium, brass, bronze, cast iron, stainless steel and steel on bench or pedestal grinders up to 6,000 RPM

  • TypeFinishing Tool Parts & Accessories
  • Ceramic bristles remove material fast on hard metals
  • 50 grit gives aggressive stock removal on steel and cast iron
  • 6 in diameter covers large surfaces in fewer passes
  • 1/2 in face width fits tight contours and edges
  • Runs up to 6,000 RPM on bench or pedestal grinders

Product Identity

The 3M Radial Bristle Brush is a finishing accessory designed for bench grinders and pedestal grinders. It targets metalworkers who need consistent surface preparation on aluminum, brass, bronze, cast iron, stainless steel, and steel. The green ceramic bristles indicate a 50 grit rating for aggressive material removal. This brush is not suited for hand-held tools or applications requiring a threaded mounting system.

Thermals Noise Power

As a non-powered abrasive accessory, the brush generates no electrical noise or heat of its own. Operational sound and thermal output depend entirely on the host grinder and the workpiece material. The maximum safe operating speed is 6,000 RPM, which the user must not exceed. Power draw is determined by the grinder motor and the pressure applied during finishing work.

Mounting Constraint

The brush features an unthreaded 1-inch centre hole for direct arbor mounting. Compatibility requires a grinder spindle that matches this exact bore size and can secure the half-inch face width. The 61500151461 part number identifies this specific configuration. Buyers whose equipment uses a different arbor diameter or a threaded shaft cannot install this brush.

Highlights

  • Ceramic bristles remove material fast on hard metals
  • 50 grit gives aggressive stock removal on steel and cast iron
  • 6 in diameter covers large surfaces in fewer passes
  • 1/2 in face width fits tight contours and edges
  • Runs up to 6,000 RPM on bench or pedestal grinders

Specifications

TypeFinishing Tool Parts & Accessories
Brand3M

Questions about this item

How do I mount the 6 in radial bristle brush on a bench grinder and which step is often missed?

Slide the 1 in unthreaded hole onto the grinder arbor, then secure the supplied flanges and tightening nut; the step often missed is torquing the nut to the grinder manufacturer's specification so the brush runs true at up to 6 000 RPM.

What part of this brush wears out and when should I replace it?

The green ceramic bristles graded at 50 grit gradually shorten; replace the brush once the bristle tips no longer contact the workpiece evenly or the face width drops below the original 1/2 in.

At what speed limit does the brush hit its maximum safe operating threshold?

The maximum rated speed is 6 000 RPM; running a bench or pedestal grinder faster than that risks bristle separation and loss of finishing control on aluminum, brass, bronze, cast iron, stainless steel or steel.

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