Abrasive Bristle Brush 3M Radiale K120 150x12x25.4mm BB-ZB TypeC

The 3M Radiale K120 Abrasive Bristle Brush 150x12x25.4mm BB-ZB TypeC is a tool for controlled surface finishing and light deburring. Constructed with abrasive-impregnated nylon filaments arranged in a radial pattern, this brush delivers consistent contact with workpieces to blend edges, remove burrs, and prepare substrates for subsequent painting or coating. The compact dimensions allow use on confined areas and in fixtures designed for rotary brushes.

Advantages

This abrasive bristle brush offers uniform material removal across the contact area, minimizing gouging and preserving part geometry. The K120 abrasive grade provides a balance between cutting action and surface refinement, producing a consistent finish while preserving component tolerances. Its radial configuration and compact size enable access to narrow profiles and recesses, and the filaments are designed to maintain shape and abrasive exposure over extended use for predictable performance.

Suitable for

• Light deburring of machined or stamped edges
• Edge blending and radius smoothing on metal and non-metal parts
• Surface preparation before painting, powder coating, or adhesive bonding
• Cleaning and finishing of weld seams and castings
• Use in rotary tools and brush holders compatible with the specified dimensions

Key specifications

• Abrasive grade: K120 for medium-fine finishing
• Overall dimensions: 150 mm length x 12 mm width x 25.4 mm arbor/shaft diameter
• Configuration: radial bristle (BB-ZB TypeC)
• Filament type: abrasive-impregnated nylon for combined flexibility and cutting
• Intended mounting: compatible with rotary brush holders and machines accepting the listed shaft size

How to use

Mount the brush securely on a rotary tool or spindle compatible with the 25.4 mm shaft diameter and ensure proper clamping. Select a rotational speed appropriate for the workpiece material and the desired finish; start at a lower speed and increase as needed while monitoring heat generation and surface condition. Apply light, even pressure and move the brush across the workpiece to blend edges or remove burrs; avoid heavy point loading that can deform filaments or overcut the part. Periodically inspect the brush for wear and replace when the abrasive action diminishes.

Usage recommendations

Use appropriate personal protective equipment, including eye and respiratory protection, when working with abrasive brushes. Test on a representative sample to confirm speed and pressure settings, and avoid excessive heat buildup by using intermittent contact or coolant where suitable. Store in a dry environment to maintain filament integrity.