Onsrud 52-554 Upcut Spiral Router Bit 1/8 in Solid Carbide

Product Description

The ONSRUD 52-554 is a solid carbide upcut spiral router bit designed for precision cutting in foam materials. With a 0.125-inch cutter diameter and a 1.125-inch length of cut, this double-edge bit removes chips upward and away from the workpiece, keeping the cut path clear and reducing heat buildup. The 0.25-inch shank seats firmly in standard collets, and the 25-degree helix angle promotes smooth, consistent material removal. At 2.5 inches overall length, it balances reach with rigidity. This bit is suited for CNC routing applications where clean, controlled passes through foam substrates are required.

The 52-554 is engineered specifically for foam material applications, making it a practical choice for sign fabrication, packaging inserts, theatrical prop work, and industrial foam profiling. The upcut flute geometry evacuates material efficiently, which matters when routing closed-cell or open-cell foam where clogging can compromise edge quality. The uncoated solid carbide construction maintains edge sharpness throughout production runs on soft, abrasive-free foam stock. CNC router operators working in light fabrication or production environments will find this bit compatible with standard 1/4-inch collet toolholding setups.

Key Features

• Solid carbide construction for consistent edge retention in foam routing applications
• Upcut flute geometry evacuates chips upward, keeping the cut zone clear
• Double-edge design provides balanced cutting forces and smooth surface finish
• 25-degree helix angle promotes efficient material removal and reduced friction
• Uncoated finish suited for non-abrasive foam substrates
• Right-hand cutting direction compatible with standard CNC router spindle rotation

Compatibility

Designed for use in CNC routers equipped with a 1/4-inch collet. Part of the ONSRUD 52-550 series, optimized for foam material applications.

Installation Notes

Installation should be performed by a qualified CNC machine operator or tooling technician. Power down and lock out the spindle before changing tooling. Insert the shank fully into the collet and tighten to the collet manufacturer's specified procedure using the appropriate wrenches. Verify runout with a dial indicator before beginning production cuts to avoid premature edge wear or poor cut quality.