Accupro 71177976 Spiral Upcut Router Bit 1/2 in Solid Carbide

Product Description

The ACCUPRO 71177976 is a solid carbide spiral upcut router bit designed for precision cutting in plastic and similar materials. With a 0.5 inch cutter diameter, a 1 inch length of cut, and a 3 inch overall length, this single-edge bit evacuates chips efficiently by pulling material upward out of the cut. The 21-degree helix angle promotes clean shearing action, reducing heat buildup and edge chipping in thermoplastics and similar materials. It runs with right-hand cutting direction and mounts on a standard 0.5 inch shank. The bright uncoated carbide finish keeps tool change and inspection straightforward for production and maintenance environments alike.

This bit is suited for routing operations on plastic stock, sheet goods, and non-ferrous materials where a clean top-edge finish and efficient chip clearing are required. The upcut geometry makes it a practical choice for plunge-start profiles, straight flute passes, and perimeter cuts on CNC routers and handheld router tables in light fabrication, sign-making, and industrial production setups. It is a single-piece, non-piloted bit requiring no additional bearing hardware.

Key Features

• Solid carbide construction delivers hardness and wear resistance for extended service life in plastics
• Upcut flute geometry pulls chips upward and out of the cut, reducing re-cutting and heat
• 21-degree helix angle promotes smooth shearing action on plastic and similar workpieces
• Single-edge design provides clearance and chip load flexibility in softer materials
• Right-hand cutting direction compatible with standard router spindle rotation
• Bright uncoated finish allows visual wear inspection without coating interference

Compatibility

Designed for use in routers and CNC spindles equipped with a 0.5 inch collet. Rated for material application in plastic. Non-piloted; no bearing or bushing guide is included or required for straight-cut operations.

Installation Notes

Installation and operation should be performed by a qualified machinist or CNC operator familiar with router tooling and applicable shop safety standards. Ensure the router or CNC spindle is fully powered down and locked out before inserting or removing the bit from the collet. Seat the shank fully into the collet and torque the collet nut according to the router manufacturer specifications. Inspect the cutting edges for chips or wear before each use, and do not exceed the router manufacturer recommended RPM for the given cutter diameter.