A front-facing studio photograph of the DeWalt Elite Series jumbo flap disc, displaying safety warning icons and specifications for the 40-grit coarse ceramic alumina mineral.
A studio photograph of the top of a DeWalt DWA8280HRT flap disc, featuring technical labels and icons for a 4.5-inch diameter, 5/8-11-inch hubbed arbor, and a maximum 13,300 RPM rating.
A studio photograph of a DeWalt Type 27 jumbo flap disc shown at an angle, with a graphic overlay illustrating the 15-25 degree grinding angle ideal for smooth finishing on flat surfaces.
A close-up photograph of the red high-quality ceramic grain on a DeWalt XP jumbo flap disc, highlighting the aggressive 40-grit texture and industrial backing.
A three-quarter studio photograph of a DeWalt DWA8280HRT XP ceramic flap disc, showing the thick layers of red abrasive jumbo flaps and the integrated silver 5/8-11 threaded hub.
A top-down studio photograph of the red 40-grit abrasive side of a DeWalt DWA8280HRT jumbo flap disc, showing the circular arrangement of ceramic cloth flaps around the central hub.
A perspective studio photograph of the DeWalt XP ceramic flap disc, emphasizing the high-density jumbo flap construction designed for long life and fast material removal.
A front-facing studio photograph of the DeWalt Elite Series jumbo flap disc, displaying safety warning icons and specifications for the 40-grit coarse ceramic alumina mineral.
A studio photograph of the top of a DeWalt DWA8280HRT flap disc, featuring technical labels and icons for a 4.5-inch diameter, 5/8-11-inch hubbed arbor, and a maximum 13,300 RPM rating.
A studio photograph of a DeWalt Type 27 jumbo flap disc shown at an angle, with a graphic overlay illustrating the 15-25 degree grinding angle ideal for smooth finishing on flat surfaces.
A close-up photograph of the red high-quality ceramic grain on a DeWalt XP jumbo flap disc, highlighting the aggressive 40-grit texture and industrial backing.
A three-quarter studio photograph of a DeWalt DWA8280HRT XP ceramic flap disc, showing the thick layers of red abrasive jumbo flaps and the integrated silver 5/8-11 threaded hub.
A top-down studio photograph of the red 40-grit abrasive side of a DeWalt DWA8280HRT jumbo flap disc, showing the circular arrangement of ceramic cloth flaps around the central hub.
A perspective studio photograph of the DeWalt XP ceramic flap disc, emphasizing the high-density jumbo flap construction designed for long life and fast material removal.
DEWALT

DeWalt Flap Disc DWA8280HRT 4-1/2 Inch (40 Grit Ceramic Jumbo Abrasive 5/8-11 Hub Type 27 13300 RPM Aggressive Metal Weld Stock Remover)

In stock
SKU: DWA8280HRT
$9.89 USD

Description

Authorized Dealer Badge DEWALT logout

Industrial-Grade 4-1/2 Inch 40-Grit Ceramic Jumbo Flap Disc with 5/8-11 Threaded Hub

The DeWalt DWA8280HRT XP Ceramic Ultra Performance Jumbo Flap Disc functions as a high-efficiency abrasive grinding wheel engineered to execute rapid stock removal, heavy weld bead leveling, and edge beveling across structural steel, stainless steel, and iron alloys. Formulated with self-sharpening ceramic alumina grains bonded to a high-strength jumbo cloth backing, this 4-1/2-inch Type 27 depressed-center disc operates safely at rotational speeds up to 13,300 RPM. Featuring a built-in 5/8"-11 threaded hubbed arbor for wrench-free tool changes, the 0.443-pound abrasive wheel contains 40 percent more abrasive cloth material than standard flap discs, maintaining cool cutting temperatures and extended service life during flat-surface grinding at 0 to 15-degree attack angles.

Best Used For:

  • Heavy Weld Bead Leveling & Blending: Slicing through structural steel flux-core and MIG weld seams to flush-grind joints before paint preparation.
  • Thick Steel Plate Edge Beveling: Prepping heavy-wall steel plate edges and structural tubing at 0-to-15-degree grinding angles prior to penetration welding.
  • Severe Corrosion & Mill Scale Removal: Stripping thick rust layers, heavy heat tint, and mill scale from raw carbon steel and cast iron components.

Key Performance & Safety Features

  • Self-Sharpening Ceramic Alumina Grain: Aggressive 40-grit ceramic mineral micro-fractures under pressure to maintain sharp cutting edges throughout disc life.
  • Jumbo Flap High-Density Construction: Packed with 40% more abrasive material than standard discs to extend total service life and reduce disc change frequency.
  • Integrated 5/8"-11 Threaded Hubbed Arbor: Enables rapid, tool-free spin-on spin-off mounting directly onto standard 4-1/2-inch angle grinder spindles.
  • Type 27 Flat Surface Profile: Depressed-center design supports optimal grinding performance when working at flat to low surface angles from 0° to 15°.
  • 13,300 RPM High-Speed Safety Rating: Engineered with reinforced composite backing cloth to withstand high centrifugal forces on high-speed angle grinders.
  • Wear-Resistant Heavy-Duty Backing Cloth: Premium cloth backing resists edge fraying and premature flap tearing under heavy grinding pressures.

What's Included

  • (1) DeWalt DWA8280HRT XP™ Ceramic 4-1/2" 40-Grit Type 27 Jumbo Flap Disc with 5/8"-11 Hub

Technical Specifications

Brand Name DeWalt Tools
Model Number SKU DWA8280HRT
Product Line XP™ Ceramic Ultra Performance Series
Tool Classification Jumbo Abrasive Flap Disc
Outer Disc Diameter 4.500 in. (4-1/2 in.)
Arbor Connection Interface 5/8"-11 Threaded Female Hub
Coarseness Grit Rating 40 Grit (Coarse Material Removal)
Abrasive Mineral Composition Ceramic Alumina Grain
Maximum Operating Speed 13,300 RPM
Shape Profile Geometry Type 27 (Depressed Center / Flat Face)
Optimal Grinding Angle Range 0° to 15° Grinding Angle
Total Unit Weight 0.443 lbs. (0.201 kg)
Country of Origin Turkey
Primary Machine Compatibility 4-1/2-Inch Small Angle Grinders (5/8"-11 Spindle)
Target Material Substrates Structural Carbon Steel, Stainless Steel, Iron Alloys, Hard Welds

Pro-Tip: When grinding heavy weld seams with the 40-grit ceramic DWA8280HRT, maintain a steady 10-to-15-degree attack angle and allow the self-sharpening ceramic grains to cut using smooth, moderate pressure. Over-leaning or digging the disc edge into sharp metal corners can gouge the substrate and tear the jumbo backing cloth prematurely.