Onsrud 62-604 Downcut Spiral Router Bit 0.125 in Solid Carbide

Product Description

The ONSRUD 62-604 is a single-edge downcut spiral router bit machined from solid carbide for use in CNC routing and high-speed spindle applications. It features a 0.125-inch cutter diameter, a 0.25-inch length of cut, and a 1/8-inch shank diameter with a 1.25-inch shank length, yielding a 1.5-inch overall length. The downcut flute geometry directs chips downward, suppressing surface tearout on the top face of the workpiece. At 0.01 pounds, this is a lightweight precision tool designed for fine detail work in aluminum and similar non-ferrous materials.

The 62-604 is suited for CNC routing operations on aluminum sheet and plate stock in both production and prototype environments. Its single-edge design reduces cutting forces, which is advantageous when machining thin or unsupported material. The 22-degree helix angle and right-hand cutting direction make it appropriate for conventional milling passes in aluminum. Typical users include CNC machinists, fabrication shops, and production routing operations working with non-ferrous metals.

Key Features

• Downcut flute geometry reduces surface tearout on the top face of the workpiece
• Solid carbide construction provides rigidity and wear resistance in aluminum applications
• Single-edge router style lowers cutting forces for thin or unsupported stock
• 22-degree helix angle optimized for right-hand cutting direction
• Uncoated finish suits aluminum and non-ferrous materials where coating adhesion is unnecessary
• 1/8-inch shank fits standard CNC collets without an adapter

Compatibility

Part of the ONSRUD 62-600 series. Designed for CNC routers and high-speed spindles accepting a 1/8-inch collet, with material application specified for aluminum.

Installation Notes

Installation should be performed by a qualified CNC machinist or tooling technician. Power down and lock out the spindle before changing tooling. Seat the shank fully and evenly in the collet to the recommended engagement depth per the machine manufacturer's guidelines, and torque the collet nut to specification using the appropriate collet wrenches. Inspect the cutting edge for chips or wear before each use, as solid carbide is brittle and susceptible to damage from improper handling or interrupted cuts.