Norton Shield Starline Grinding Disc 125 x 6.4 mm A24Q-BF27 for Metal (25-Pack)

With an 80 m/s maximum operating speed, this grinding disc delivers aggressive metal removal and long-lasting performance. The Norton Shield Starline is a reinforced depressed-center wheel (Type 27) engineered specifically for grinding steel, stainless steel, and cast iron. Its aluminum oxide grain (A24) provides consistent cutting action, while the medium-hard resinoid bond (Q) balances durability with efficient material removal. Each disc features fiberglass mesh reinforcement for added safety and stability at high speeds.

Overview

The Norton Shield Starline is a reinforced depressed-center wheel (Type 27) engineered specifically for grinding steel, stainless steel, and cast iron. Its aluminum oxide grain (A24) provides consistent cutting action, while the medium-hard resinoid bond (Q) balances durability with efficient material removal. Each disc features fiberglass mesh reinforcement for added safety and stability at high speeds.

What stands out

• High-performance aluminum oxide grain for fast stock removal
• Reinforced with fiberglass mesh for enhanced safety and longevity
• Depressed center design allows flush grinding and better access
• Suitable for a wide range of ferrous metals
• Conforms to EN 12413 safety standards

Technical details

• Disc diameter: 125 mm
• Disc thickness: 6.4 mm
• Bore diameter: 22.23 mm
• Abrasive grain: Aluminum Oxide (A)
• Grit size: 24 (coarse)
• Hardness grade: Q (medium-hard)
• Bond type: Resinoid, reinforced (BF)
• Max operating speed: 80 m/s
• Max RPM: 12,250
• Pack quantity: 25 discs

Our verdict

For fabricators and metalworkers who demand reliability and speed, the Norton Shield Starline is a trusted choice. Its robust construction and high cutting efficiency make it ideal for daily use on angle grinders.