Cojinete superior y embellecedor en espiral de carburo sólido

A top-bearing flush-trim bit has its guide bearing positioned above the cutter rather than below. The bearing rides along a template or reference edge placed on top of the workpiece, trimming the material beneath flush to the template profile.

Use a top-bearing bit when the template is fastened to the top face of the workpiece or when the reference surface is above the router table—such as trimming edge banding flush to a panel using the panel itself as a guide from above.

Solid carbide bits are ground from a single carbide blank, providing more consistent edge geometry, better vibration resistance, and longer edge life in abrasive materials like MDF, plywood, and laminate. They are also resharpenable to original geometry more precisely than brazed-tip bits.

A compression flush-trim bit has upcut flutes at the bottom of the cutter and downcut flutes at the top. When the full cutter height is engaged, fibers on both faces of the panel are sheared toward the center, eliminating tear-out on both the face and the back of the workpiece.

A double-bearing pattern bit carries a bearing both above and below the cutting flutes. This allows the same bit to follow a template placed either above or below the workpiece without changing the bit setup.

These bits cut solid hardwoods, softwoods, MDF, plywood, melamine, high-pressure laminate, and composite materials such as Corian. The spiral geometry and solid carbide construction handle abrasive materials better than standard carbide-tipped bits.

Yes. Solid carbide spiral flush-trim bits are well suited for CNC use due to their balanced geometry and superior wear resistance. For a broader range of CNC-optimized tooling, browse the CNC collection.

Both 1/4" and 1/2" shank versions are available. Use 1/2" shank bits in full-size routers for reduced vibration and cleaner cuts; 1/4" shank bits are appropriate for compact and trim routers.

This collection focuses specifically on solid carbide spiral bits with a top-bearing configuration, including compression and double-bearing variants. The broader flush-trim collection includes bottom-bearing and carbide-tipped options alongside these solid carbide spiral versions.

Yes. All Infinity Tools solid carbide spiral bits are backed by our quality guarantee. Contact us if a bit does not perform as described.