Diablo Grinding Disc DBD040250701F 4 Inch Type 27 (1/4 Thick 5/8 Arbor Aluminum Oxide Steel Cast Iron Weld Deburring Angle Grinder Tool Unit)

Diablo DBD040250701F 4" x 1/4" Type 27 Metal Grinding Disc

The Diablo DBD040250701F 4-inch Type 27 depressed center metal grinding disc removes heavy weld beads, bevels pipe edges, and deburrs structural steel across cast iron, sheet metal, and stainless steel workpieces. Engineered with a premium aluminum oxide abrasive grain blend, a 1/4-inch heavy-duty wheel thickness, and high-tensile multi-layer fiberglass mesh reinforcement, this 15,250 maximum RPM abrasive wheel delivers rapid material removal while extending disc service life. Outfitted with a standard 5/8-inch arbor interface and a depressed center profile that provides clearance for steep angle grinding, it equips certified welders, boilermakers, and industrial metal fabricators with chatter-free surface preparation across all 4-inch angle grinders.

Best Used For:

• Heavy Weld Bead Removal and Surface Blending: Grinding down aggressive multi-pass stick, MIG, and TIG weld beads flush to raw base metal without gouging surrounding plate.
• Structural Steel Beveling and Edge Prepping: Chamfering structural I-beams, heavy plate edges, and thick pipe bevels prior to root-pass welding operations.
• Cast Iron and Slag Deburring: Removing torch dross, heavy scale, casting gates, and sharp parting lines from dense iron and steel fabrications.

Key Performance & Safety Features

• Premium Aluminum Oxide Abrasive Blend: Formulated for aggressive stock removal rates and extended abrasive wheel life in high-friction metal applications.
• Type 27 Depressed Center Architecture: Recessed hub allows the grinding face to operate comfortably at 15 to 30-degree angles without interference from mounting flange nuts.
• Multi-Layer Fiberglass Reinforcement: Heavy-duty internal fiberglass mesh grid delivers extreme burst strength and operator safety under severe lateral grinding forces.
• High-Speed 15,250 Maximum RPM Rating: Dynamically balanced construction minimizes machine vibration and operator fatigue during prolonged continuous grinding.
• 1/4-Inch Rigid Heavy-Duty Body: Thick structural wheel profile resists edge wear and grooving during intensive stock removal on hard alloys.

What's Included

• (1) Diablo DBD040250701F 4" x 1/4" x 5/8" Arbor Type 27 Premium Metal Grinding Disc

Technical Specifications

Manufacturer Freud America Inc. (Diablo Tools) Model Number DBD040250701F Product Classification Type 27 Depressed Center Grinding Wheel Disc Diameter Size 4.00 inches (101.6 mm) Disc Thickness Width 0.250 inches (1/4 in / 6.35 mm) Arbor Hole Interface Size 0.625 inches (5/8 in / 15.88 mm) Wheel Shape Profile Type 27 (Depressed Center) Abrasive Mineral Composition Premium Aluminum Oxide Grain Blend Structural Reinforcement Multi-Layer Woven Fiberglass Mesh Maximum Rotational Speed 15,250 RPM Maximum Operating Grinding Angle 15° to 30° Optimal Face Angle Target Substrates Mild Carbon Steel, Stainless Steel, Cast Iron, & Sheet Metal Compatible Tool Platforms 4" Corded & Cordless Angle Grinders

Pro-Tip: Maintain a consistent 15° to 30° angle relative to your workpiece while grinding; operating too flat causes edge fraying, while grinding too steeply creates gouging and reduces the effective abrasive contact area.