Bosch X551 Expert for Metal Flap Disc, 125 mm, 40 Grit, Straight, Zirconia Alumina, 22.23 mm Bore 2608607353

Metal fabricators and welders reach for the Bosch X551 Expert for Metal flap disc when they need aggressive stock removal and a smooth finish on steel and stainless steel. Mounted on a standard angle grinder, the 125 mm straight disc with 40 grit zirconia alumina abrasive cuts fast and lasts long on weld seams, edges, and surfaces.

Key specifications

• Disc diameter: 125 mm
• Bore diameter: 22.23 mm
• Grit size: 40
• Disc shape: straight (flat)
• Abrasive material: zirconia alumina
• Backing material: fiberglass
• Maximum speed: 12,250 RPM / 80 m/s
• Quantity per pack: 1 piece

Why choose it

The X551 Expert for Metal combines a rigid fiberglass backing with a resin-bonded zirconia alumina abrasive. This construction provides high removal rates on metal while keeping the disc stable under pressure. The straight shape suits flat surfaces and edge grinding, and the 22.23 mm bore fits most 125 mm angle grinders.

Ideal use cases

• Grinding weld seams on steel construction
• Removing scale, rust, and burrs from metal parts
• Finishing stainless steel fabrications
• Edge chamfering and deburring in metal workshops

Good to know

The disc complies with EN 13743 for bonded abrasives. Use on angle grinders with a maximum speed of 12,250 RPM or 80 m/s. Always wear appropriate personal protective equipment when grinding metal.