Klingspor SMT 325 Zirconia Alumina Flap Disc, 125 mm x 22.23 mm, P40 Grit, Conical, 10-Pack 321660

Grinding and blending on metal surfaces often means choosing between fast stock removal and a smooth finish—and frequently changing discs when they wear out too quickly. The Klingspor SMT 325 flap disc provides a solution: a conical shape that conforms to contours, paired with tough zirconia alumina abrasive that keeps cutting long after conventional discs dull. Each disc is built on a fiberglass backing plate, delivering the stability needed for controlled grinding on stainless steel and other metals.

Who is it for

Metal fabricators, welders, and maintenance professionals who need an aggressive yet controllable abrasive for angle grinders. It suits anyone working on stainless steel, mild steel, or general metalwork where a consistent finish matters.

Main features

• Zirconia alumina abrasive for high stock removal and long life
• Conical (gewölbt) shape for grinding on flat surfaces and edges
• Fiberglass backing plate for stability and safety at high speeds
• P40 grit for coarse grinding and weld blending
• 10 discs per pack for extended work sessions

Specifications

• Diameter: 125 mm
• Bore diameter: 22.23 mm
• Grit size: P40
• Disc shape: Conical
• Abrasive material: Zirconia alumina
• Backing plate material: Fiberglass
• Max. operating speed: 12,200 RPM
• Max. peripheral speed: 80 m/s
• Bonding agent: Synthetic resin
• Backing material: Cotton/polyester blend
• Application: Metalworking, stainless steel, general grinding
• Tool compatibility: Angle grinder
• Packaging quantity: 10 pieces
• Safety standard compliance: OSA
• Manufacturing standard: ISO 9001

Tips

Use a backing pad and flange designed for 22.23 mm bores. Let the disc do the work—excessive pressure reduces life and can overheat the workpiece. For best results on stainless steel, keep the disc moving to avoid heat discoloration.