Knotted / Twist Wire Cup Brush

Description

The Knotted / Twist Wire Cup Brush is a cup-form brush built with twisted knots of carbon or stainless steel wire for use on angle grinders. The knotted construction makes the wire ends stiff and aggressive, so the brush cuts through heavy weld slag, mill scale, and heavy rust that softer crimped brushes cannot. It fits a 5/8-11 arbor, and stainless wire is available where corrosion resistance or non-ferrous contamination control is needed. Built to order at our Yuantan factory cluster, the diameter is made to order and wire type, knot count, and trim can be specified for your grinder and job.

Knotted (twisted) wire construction groups wire into aggressive twisted clusters rather than individual crimped strands, giving this cup brush significantly more cutting force than a crimped wheel — the right choice for heavy weld slag, mill scale and heavy rust that a crimped wire wheel would struggle to clear efficiently. The 5/8-11 arbor is the standard fitting for angle grinders.

Cup diameter is confirmed against your grinder and job rather than fixed to a single number — tell us your angle grinder model and the surface area you're working and we'll confirm or build to the right diameter.

Specifications

⚠ Some figures are indicative and confirmed per order — request a quote for the exact specification sheet.

Customization & Options

This is a make-to-order industrial brush. Filament material, wire/bristle diameter, trim length, outer diameter, core and base size, hardness, and the machine it fits can all be tailored to your application. Send us your spec, sample or drawing and we'll match the right factory in the Yuantan cluster.

Why source it with BrushSourcing

Frequently asked questions

Why choose knotted wire over crimped wire for this job?

Knotted (twisted) wire clusters cut far more aggressively than crimped wire, making it the right choice for heavy weld slag, mill scale and heavy rust rather than light surface cleaning.

What diameter cup brush do I need?

Diameter depends on your angle grinder and the surface area you're working — tell us your grinder model and job and we'll confirm the right size rather than guess.

Is stainless steel wire available for corrosion-sensitive work?

Yes — this brush is available in both carbon steel and stainless steel wire; stainless avoids leaving ferrous particles that could rust on stainless or aluminium workpieces.

Buying guides

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How to get a quote

1. 1

   Send your requirement — spec, application, drawing or sample.

2. 2

   We match the right factory and reply with price and lead time.

3. 3

   Approve the sample; we produce, inspect and ship worldwide.