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Walter 4.5 Inch Saucer Cup Brush Knot Twisted Steel M14 Arbor

$41.60/ea $26.00/1 per each only $26.00/eaSave 37%

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OVERVIEW

Heavy-Duty Cleaning for Pipe and Structural Welders

When you are out in the field or in the shop laying down beads, you need a wire brush that cleans thoroughly without falling apart. The Walter 13L452 Saucer-Cup Knot Brush is built for welders who demand performance. This isn't your average hardware store brush; it is a high-performance tool designed to tackle the toughest slag and scale on steel. The 4-1/2 inch diameter and unique saucer shape make it the ultimate weapon for cleaning root pass welds and stringer beads. Unlike a flat wire wheel that can dig too deep or a standard cup brush that can't hit the corner, the saucer shape lets you get right into the groove at a comfortable angle.

The "knot-twisted" construction means business. Walter twists the steel wires into tight knots that act like hammers against the work surface, aggressively knocking away heavy buildup and rust. This is crucial for pipeline welders who need to ensure a clean surface between passes to prevent inclusions and defects. The wire itself is top-tier carbon steel, tempered to handle the heat and stress of grinding without snapping off prematurely. This means you spend less time changing out worn brushes and picking wire out of your leathers, and more time welding. The M14 threaded nut spins directly onto compatible grinders, locking on tight for safe operation.

Comfort matters when you are grinding all day. Walter balances every single brush to run smooth and true. You won't feel that hand-numbing wobble that cheap brushes give you. This smooth operation gives you better control over the tool, resulting in a cleaner prep job and less strain on your wrists. Whether you are prepping a joint, cleaning up a cap, or removing spatter, the Walter 13L452 delivers the aggressive cleaning power you need with the longevity you expect from a premium brand.

Why Welders Choose This Brush

  • Root Pass Specialist: The angled saucer shape is perfect for digging into V-grooves and fillet welds.
  • Built Tough: Knot-twisted steel wire stands up to heavy abuse and aggressive scrubbing.
  • Smooth Running: Excellent balance means less wobble, less fatigue, and better control.
  • Safety First: High-quality wire manufacturing reduces the danger of flying wire bristles.
Additional Information
Diameter:4.5"
Arbor (in):M14
Wheel Style:Twist Knot
Used To Grind:Steel
Brand:Walter Surface Technologies
Packaging Description:1 per each
Wire Material:Carbon Steel
Max RPM:12500
Brush Shape:Saucer-Cup
Thread Size:M14 x 2.0

INCLUDED

  • 1x Walter 4-1/2" Saucer-Cup Knot Wire Brush (Steel, M14 Thread)

APPLICATIONS

  • Cleaning root pass welds in pipeline construction
  • Removing heavy slag and scale from structural steel
  • Surface preparation before painting or coating
  • Deburring cut metal edges
  • Cleaning fillet welds and tight corners
  • Removing rust and corrosion from steel plates

FAQ

The Walter 13L452 features an M14 x 2.0 thread. Please verify your angle grinder spindle size before purchasing, as this is different from the standard 5/8"-11 thread found on many North American grinders.

A saucer-cup brush has a flared, angled shape (typically 45 degrees) that combines the features of a wheel and a cup. This allows it to reach into tight corners and clean fillet welds more effectively than a standard flat-bottom cup brush.

No, this brush uses carbon steel wire. Using it on stainless steel can cause cross-contamination and lead to rust (after-rust). For stainless steel, you should use a stainless steel wire brush (typically marked with blue packaging or specified as SS).

The maximum safe speed for the Walter 13L452 is typically rated at 12,500 RPM. Always check the stamp on the brush itself and ensure your grinder's RPM does not exceed this rating.

Knot-twisted brushes are much more aggressive and stiff. They are designed for heavy-duty cleaning, such as removing thick slag, scale, and heavy rust. Crimped brushes are softer and better for light cleaning or surface finishing.

Yes, it is designed for 4-1/2 inch (115mm) and 5 inch (125mm) angle grinders, provided the grinder has a matching M14 spindle thread.

Always wear a face shield over safety glasses, heavy leather gloves, and protective clothing (like a leather apron). Wire brushes can shed bristles at high speeds, which can penetrate standard clothing.

No, the M14 threaded nut is integrated into the brush housing. It screws directly onto the grinder spindle.

CATALOGUE & SPEC SHEETS

Safety Data Sheet
Google Rating
4.9
Based on35reviews
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