Flap Disc KLINGSPOR Kombi SMT850 125mm model 312559, abrasive flap wheel for metal and stainless steel

KLINGSPOR Kombi SMT850 125mm flap disc model 312559 is an abrasive flap wheel designed for surface grinding, deburring and blending on metal and stainless steel. With a 125 mm diameter and layered abrasive flaps, the disc offers consistent material removal and a uniform finish when mounted on compatible angle grinders. The product is intended for workshop and fabrication tasks such as rust and paint removal, weld seam blending and surface preparation prior to painting or coating.

Advantages

The flap disc combines flexible abrasive flaps with a firm backing that balances aggressive stock removal and controlled finishing. It is suitable for use on both carbon steel and stainless steel due to abrasive selection and construction that reduce heat buildup and glazing. The 125 mm size provides stability during higher-speed grinding and good access to flat and slightly contoured surfaces. Its construction helps extend usable life compared with single-sheet abrasives and delivers repeatable surface quality.

Suitable for

• Rust and paint removal from metal surfaces
• Grinding and blending of weld seams
• Deburring edges and components
• Surface preparation before painting, coating or welding
• Finishing of steel and stainless steel parts

Key specifications

• Diameter: 125 mm
• Type: abrasive flap disc (layered flap wheel)
• Intended materials: metal and stainless steel
• Typical applications: grinding, deburring, blending, surface preparation
• Compatibility: for use with angle grinders sized for 125 mm discs

How to use

Install the flap disc on an angle grinder following the grinder manufacturer's mounting instructions and ensuring the disc is seated securely. Operate the grinder at the recommended speed range for a 125 mm disc, apply light to moderate pressure, and move the disc smoothly across the work surface. For stainless steel, use steady, light passes to minimise heat concentration and avoid discoloration. Replace the disc once abrasive performance diminishes or if any damage to the backing or flaps is visible.

Usage recommendations

Use appropriate personal protective equipment including safety glasses, face shield, gloves and hearing protection. Ensure the grinder's guard is correctly installed. For best results on stainless steel, keep the disc moving and use coolant or intermittent grinding where feasible to reduce heat. Store discs in a dry environment away from direct moisture and extreme temperatures.