Klingspor Flap Discs: Choosing the Right Flap Disc for Metal Grinding and Stainless Steel Finishing

This article was made in collaboration with McNeil, Gray & Rice Strategic Communications.


For metal fabrication professionals, selecting the right flap disc can help support productive grinding, weld blending and refined finishing results. Whether the application calls for aggressive stock removal, a longer-lasting abrasive, faster disc changes or controlled stainless steel finishing, the best flap disc depends on the job, material and desired surface result.


Klingspor offers CMT, SMT and TITAN flap disc families for grinding, blending and finishing on stainless steel and other metals. Depending on the model, these grinding discs are available with alumina zirconia or ceramic grain, non-woven and combination constructions, and flat or angled geometries. The range gives metalworkers options for applications that require aggressive grinding, cooler operation, extended disc life or a consistent finish.



A set of CMT 800 non-woven discs

CMT Flap Discs for Fast, Convenient Changes

When production workflows require fast accessory changes, Klingspor CMT flap discs provide a quick-change format unique to Klingspor. The CMT family is designed for safe operation and convenient disc changes while supporting grinding and blending applications at a lower cost.


Available in convex and flat profiles, CMT flap discs include alumina zirconia and non-woven constructions for grinding and finishing applications. For operators using a flap disc grinder in a high-throughput environment, this quick-change approach can help reduce time spent replacing abrasives while maintaining application flexibility.

SMT Flap Discs for Demanding and Everyday Grinding

Klingspor’s SMT flap disc family is organized into three quality classes to help users align abrasive performance with application requirements. The SMT SPECIAL “9” Series is built for outstanding performance and service life in demanding applications. The SMT SUPRA “6” Series delivers excellent life and a high stock removal rate for reliable daily grinding, while the SMT EXTRA “3” Series provides a universal-use option for a variety of steels.


Depending on the product selected, SMT flap discs feature alumina zirconia or ceramic grain and are available in angled or flat designs for low-powered or high-powered grinders. The range also includes non-woven and combination flap disc constructions for stainless steel finishing, weld seam work, satin finishing and cooler grinding on heat-sensitive materials.

A group of Titan SMT discs

TITAN Flap Discs for Extended Life and Cooler Grinding

For demanding fabrication work, Klingspor TITAN flap discs are designed to extend disc life, improve grinding efficiency and support aggressive stock removal, high-load grinding and stainless finishing. TITAN’s trimmable flap disc design enables users to expose fresh abrasive as the disc wears, helping extend disc life, reduce changeover frequency and provide more grinding time per disc.


The TITAN family is designed to run cooler to help prevent heat buildup and support surface integrity. Its yellow plastic backing plate provides stable, vibration-dampening support for a smoother grinding experience, while the built-in 5/8"-11 threaded arbor enables tool-free, spin-on changes.


Depending on the model, TITAN grinding discs use alumina zirconia or ceramic grain to support aggressive grinding and high material-removal rates in demanding applications. Stainless steel-focused options incorporate multibond lubricant to support cooler grinding and reduced loading. The TITAN range also includes non-woven and combination constructions for controlled material removal, satin finishing and improved surface quality on stainless steel.

Selecting the Right Flap Disc for Metalworking

The right flap disc begins with the application’s primary need. CMT products are designed for jobs where convenient, rapid changes can help keep production moving. SMT products provide options ranging from universal steel grinding to demanding applications requiring strong performance and service life. TITAN flap discs are designed for users seeking longer disc life, aggressive grinding capability, cooler operation or stainless steel finishing performance.


Selecting the right grain type, construction and flat or angled geometry helps match the abrasive to the workpiece, grinder and desired finish.

Find the Right Klingspor Flap Disc

From quick-change grinding to high-load material removal and controlled stainless steel finishing, Klingspor provides flap disc solutions for a wide range of fabrication and metalworking needs. Explore the CMT, SMT and TITAN flap disc families to select the abrasive solution that best matches your grinding, blending and finishing application.


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