Accupro 71177869 Spiral Router Bit 0.1563 in Upcut Carbide

Product Description

The ACCUPRO 71177869 is a solid carbide spiral router bit designed for precision cutting in plastics and composite materials. With a cutter diameter of 0.1563 inches, a length of cut of 0.5625 inches, and a 2-inch overall length, this bit fits into a standard 1/4-inch shank collet. The single-edge, upcut flute geometry pulls chips up and away from the cut, helping maintain a clean kerf and reducing heat buildup at the cutting edge. The 21-degree helix angle and right-hand cutting direction are optimized for smooth, controlled material removal. Bright uncoated carbide is the correct choice for gummy plastics where coatings can promote material adhesion.

This bit is well-suited for routing operations on acrylic, nylon, PVC, polycarbonate, and solid surface materials. Typical applications include sign fabrication, plastic component profiling, and panel cutouts in light manufacturing or shop environments. The small diameter makes it appropriate for tight-radius passes and detail work where a larger bit would not be practical. Machinists, CNC operators, and woodworking or plastics fabrication shops are the primary users of this tool.

Key Features

• Solid carbide construction for rigidity and wear resistance in plastic and composite routing
• Single-edge upcut flute evacuates chips efficiently and reduces recutting
• 21-degree helix angle optimized for smooth cutting action in thermoplastics
• Right-hand cutting direction for standard router and CNC spindle compatibility
• Bright uncoated finish suitable for acrylic, nylon, PVC, polycarbonate, and solid surfaces
• 1/4-inch shank fits widely available collets on handheld routers and CNC machines

Compatibility

Designed for use in routers and CNC spindles equipped with a 1/4-inch collet. Suitable for cutting acrylic, nylon, PVC, polycarbonate, and solid surface materials as stated by the manufacturer.

Installation Notes

This bit should be installed by a qualified machinist or CNC operator familiar with proper collet torque procedures and spindle speeds for small-diameter carbide tooling. Always power down and lock out the router or CNC spindle before changing tooling. Inspect the collet and collet nut for wear or debris before seating the shank. Small-diameter carbide bits are brittle and should not be forced into cuts with excessive feed rates or lateral pressure.