Klingspor SMT 325 Zirconia Flap Disc 125 x 22.23 mm P40 Flat, 10 Pack 321654

Where standard flap discs lose their edge after a few passes, the Klingspor SMT 325 holds its bite. Built around a zirconia alumina abrasive on a rigid fiberglass backing, this disc delivers aggressive stock removal with a remarkably consistent finish — pass after pass. The flat profile and P40 grit make it a first-choice tool for heavy grinding, weld dressing, and deburring on steel, stainless, and non-ferrous metals.

Highlights

• Zirconia alumina grain for high removal rates and long service life
• Fiberglass backing plate for stability and safety at high speeds
• Flat (straight) profile for aggressive grinding and edge work
• P40 grit ideal for coarse stock removal and surface preparation
• 10 discs per pack — economical for professional workshops

In daily use

Mount the SMT 325 on any standard 125 mm angle grinder with a 22.23 mm bore. From removing weld seams to smoothing rough castings, the disc cuts cool and resists loading, even on stainless steel. The synthetic resin bonding keeps the flaps intact under pressure, while the 80 m/s maximum speed rating ensures safe operation at the full RPM of most grinders.

Full specifications

• Series: SMT 325
• Disc diameter: 125 mm
• Bore diameter: 22.23 mm
• Grit size: P40
• Profile: Flat (straight)
• Abrasive material: Zirconia alumina
• Backing plate: Fiberglass
• Bonding agent: Synthetic resin
• Max. operating speed: 80 m/s
• Max. rotational speed: 12,200 RPM
• Applications: Grinding, deburring, edge work, surface finishing
• Suitable materials: Steel, stainless steel, non-ferrous metals
• Tool compatibility: Angle grinders
• Standard compliance: EN 13743
• Pack quantity: 10 pieces
• Colour: Blue/Green

Final note

A professional-grade flap disc that combines high aggression with controlled stock removal — the SMT 325 is a dependable workhorse for demanding metal fabrication tasks.