Onsrud 57-244 Downcut Spiral Router Bit 1/8 in Solid Carbide

Product Description

The ONSRUD 57-244 is a downcut spiral router bit machined from solid carbide, designed for clean, chip-free cuts in natural wood, solid surfaces, and wood composites. The downcut flute geometry drives chips downward during cutting, which suppresses surface tearout and keeps the top face of the workpiece clean. With a 0.125-inch cutter diameter, a 0.5-inch length of cut, and a right-hand cutting direction, this bit is built for precision routing in tight geometries. It is suited for CNC router applications where surface finish quality and dimensional accuracy are critical. The 30-degree helix angle and double-edge design support efficient chip evacuation at typical routing feed rates.

This bit is intended for use in CNC routing operations on natural wood, solid surface materials, and wood composites. Its 1/8-inch shank diameter fits standard 1/8-inch collets found on compact and full-size CNC router spindles. Typical applications include detail routing, profile work, and surface finishing passes where tearout control on the top face of the material is a priority. The uncoated solid carbide construction is appropriate for clean, non-abrasive materials in the listed application categories.

Key Features

• Downcut flute geometry minimizes surface tearout on the top face of the workpiece
• Solid carbide construction for rigidity and edge retention in wood and solid surface routing
• 30-degree helix angle with double-edge design for efficient chip flow
• Right-hand cutting direction compatible with standard CNC router spindles
• 1/8-inch shank fits common CNC collet sizes without an adapter
• Uncoated finish suitable for natural wood, solid surfaces, and wood composites

Compatibility

Designed for use in CNC routers equipped with a 1/8-inch collet. Rated for natural wood, solid surfaces, and wood composites per manufacturer material application data.

Installation Notes

This bit should be installed by a qualified CNC operator or machinist. Power down and lock out the spindle before inserting or removing the bit. Ensure the shank is fully seated and the collet nut is properly torqued per the router manufacturer's specification before operation. Do not exceed the router spindle's rated RPM range for the cutter diameter in use.