Onsrud 65-220B Upcut Spiral Router Bit 0.25in Solid Carbide

Product Description

The ONSRUD 65-220B is a solid carbide upcut spiral router bit designed for precise cutting in plastic materials. With a 0.25-inch cutter diameter and a 0.5-inch length of cut, this bit removes chips efficiently by pulling them upward and away from the workpiece, reducing heat buildup and improving cut quality. The 30-degree helix angle promotes smooth chip evacuation, which is critical when routing thermoplastics and similar materials. Right-hand cutting direction and an uncoated solid carbide construction give this bit a sharp, consistent edge suited to production and detail routing applications. It is installed by CNC router operators and tooling technicians working in fabrication and sign shops.

The 65-220B is well suited for routing plastics in both production shop and custom fabrication environments. The 2.5-inch overall length and 2-inch shank length allow adequate reach in standard CNC router collets. The upcut flute geometry is particularly effective on acrylic, HDPE, PVC, and similar thermoplastics where clean top-surface finish and efficient chip removal are priorities. This bit is part of the ONSRUD 65-200B series and is engineered for use in CNC router applications where consistent, repeatable cuts in plastic are required.

Key Features

• Solid carbide construction for durability and edge retention in plastic routing
• Upcut flute geometry pulls chips away from the cut surface, reducing recutting and heat
• 30-degree helix angle promotes smooth, efficient chip evacuation
• Uncoated finish delivers sharp cutting edges suited to plastics
• Right-hand cutting direction compatible with standard CNC router spindle rotation
• 0.25-inch shank diameter fits standard 1/4-inch CNC router collets

Compatibility

Designed for use in CNC routers equipped with a 1/4-inch collet. Intended material application is plastics, per manufacturer specification. Part of the ONSRUD 65-200B series.

Installation Notes

Installation should be performed by a qualified CNC tooling technician. Always power down and lock out the spindle before changing tooling. Insert the shank fully into the collet to the manufacturer-recommended engagement depth and tighten to the collet manufacturer's specified torque using the appropriate collet wrenches. Inspect the bit for chips or cracks before each use and do not operate damaged tooling.