Abrasive flap disc KLINGSPOR SMT314 EXTRA 125 mm grit 80

Klingspor SMT314 EXTRA 125 mm grit 80 is an abrasive flap disc designed for metalworking and surface preparation with angle grinders. The disc features overlapping abrasive flaps that provide consistent material removal and even surface texture on steel and stainless steel. It is intended for tasks such as deburring, removing rust and paint, blending welds and edges, and preparing surfaces for subsequent finishing or coating.

Advantages

The flap construction ensures steady stock removal while maintaining a uniform finish and extending abrasive life compared with single-layer discs. The 125 mm diameter balances access in tighter spaces with sufficient contact area for efficient grinding. Grit 80 offers a medium-cut performance suitable for both removing material and creating a surface profile ready for further finishing. Designed for use on angle grinders, the disc provides controlled removal, reduced vibration, and consistent results across repeated operations.

Suitable for

• Deburring and edge rounding of steel components
• Removal of rust, scale and old paint from metal surfaces
• Blending and finishing of weld seams on stainless and mild steel
• Surface preparation before priming or painting
• Light to medium stock removal in fabrication and repair work

Key specifications

• Diameter: 125 mm
• Abrasive type: flap construction with overlapping abrasive cloth flaps
• Grit size: 80 (medium)
• Intended materials: steel and stainless steel
• Tool compatibility: angle grinders with appropriate mounting

How to use

Mount the flap disc on a compatible angle grinder according to the grinder manufacturer's instructions, ensuring the wheel guard is in place and the correct rotational direction is observed. Start grinding with light to moderate pressure, keeping the disc flat or at a slight angle to the workpiece to achieve uniform material removal. Move the grinder steadily along the surface to avoid gouging; allow the abrasive flaps to wear evenly for consistent finish. Observe recommended speed limits for the disc and wear appropriate personal protective equipment including eye, hearing and hand protection.

Usage recommendations

For best results, use the SMT314 EXTRA 125 mm grit 80 disc on clean, dry metal and select an operating speed within the disc's specified RPM range. Replace the disc when flap wear reduces performance or when damage to the backing or flaps is visible. When blending welds, use smooth, overlapping passes and finish with finer grits if a smoother surface is required before coating.