Onsrud 63-627 Upcut Spiral Router Bit 3/8 in Solid Carbide

Product Description

The ONSRUD 63-627 is a single-edge upcut spiral router bit designed for precision material removal in CNC routing and high-speed machining applications. Built from solid carbide, it delivers the rigidity and edge retention required for consistent cuts in non-ferrous metals and similar materials. The bit features a 3/8-inch cutter diameter, a 1-3/8-inch length of cut, and a 22-degree helix angle that promotes efficient chip evacuation in upcut orientation. It is an uncoated, right-hand cutting tool suited for professional machining environments where repeatability and tool life are priorities.

The ONSRUD 63-627 is engineered specifically for aluminum machining, making it a practical choice for CNC router operators working with aluminum sheet, plate, and extrusion stock. The upcut flute geometry pulls chips up and out of the cut, reducing re-cutting and heat buildup at the cutting edge. It fits standard 3/8-inch collets and is appropriate for use on production CNC routers in fabrication shops, sign shops, and industrial manufacturing cells where aluminum is a primary workpiece material.

Key Features

• Solid carbide construction for high rigidity and extended tool life in non-ferrous applications
• Upcut single-edge flute geometry promotes efficient chip evacuation and reduced heat at the cutting zone
• 22-degree helix angle optimized for smooth, consistent cutting in aluminum
• Right-hand cutting direction compatible with standard CNC router spindle rotation
• Uncoated finish suitable for aluminum where coatings may cause material adhesion issues
• 3/8-inch shank with 2-1/8-inch shank length provides solid tool holding in standard collet systems

Compatibility

Designed for use in CNC routers equipped with 3/8-inch collets. Material application is rated for aluminum per manufacturer specifications. Part of the ONSRUD 63-600 series.

Installation Notes

Installation should be performed by a qualified CNC machinist or tooling technician with the spindle fully powered down and locked out before tool changes. Seat the shank fully into the collet to the minimum insertion depth recommended by the collet manufacturer to avoid runout and tool pullout. Verify spindle speed and feed rate are set appropriately for aluminum before engaging the cut. Inspect the cutting edges for chipping or wear before each use and replace the bit if edge integrity is compromised.