Onsrud 63-629 Upcut Spiral Router Bit 5/16 in Solid Carbide

Product Description

The ONSRUD 63-629 is a single-edge upcut spiral router bit machined from solid carbide and designed for cutting aluminum and other non-ferrous materials. It features a 5/16-inch (0.3125 inches) cutter diameter with a 9/16-inch (0.5625 inches) length of cut and a 22-degree helix angle. The upcut flute geometry evacuates chips upward and away from the cut, reducing heat buildup and improving surface finish in aluminum stock. Right-hand cutting direction and an uncoated carbide body make this bit a reliable choice for CNC routing operations performed by machinists and fabricators working with aluminum plate, extrusions, or sheet goods.

The 63-629 is suited for CNC router applications in light industrial, sign-making, and metal fabrication environments where precise, clean cuts in aluminum are required. The 1-15/16-inch shank length provides solid tool holding in standard collet chucks. With a 2-1/2-inch overall length and a non-piloted design, this bit is intended for use in plunge, profile, and pocket-routing operations on CNC machines equipped with appropriate work-holding fixtures.

Key Features

• Solid carbide construction for rigidity and wear resistance in aluminum cutting
• Upcut flute design evacuates chips away from the workpiece, reducing re-cutting
• 22-degree helix angle optimized for smooth shearing action in non-ferrous materials
• Single-edge geometry allows aggressive material removal in aluminum
• Right-hand cutting direction compatible with standard CNC spindle rotation
• Uncoated finish suitable for aluminum applications where coating adhesion is unnecessary

Compatibility

Part of the ONSRUD 63-600 series, designed as an OEM-style solid carbide upcut spiral router bit for CNC routing machines accepting a 5/16-inch shank collet. Optimized for aluminum material applications.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Power down and lock out the CNC spindle before changing tooling. Seat the shank fully into the collet to the manufacturer-recommended engagement depth and tighten the collet nut using the appropriate collet wrenches. Verify runout with a dial indicator before beginning production cuts, and confirm spindle speed and feed rate are appropriate for the material and cutter diameter per standard machining reference data.