Onsrud 52-310 Upcut Spiral Router Bit 5/16 in Solid Carbide

Product Description

The ONSRUD 52-310 is a solid carbide upcut spiral router bit designed for precise material removal in routing applications across woodworking, plastics fabrication, and composite surface machining. With a 5/16-inch (0.3125 inch) cutter diameter and a 1.125-inch length of cut, it clears chips efficiently by pulling them upward and away from the workpiece. The double-edge geometry and 30-degree helix angle promote clean, consistent cuts in natural wood, plastics, solid surfaces, and wood composites. At 3 inches overall length with a 1/2-inch shank, this bit fits standard router chucks and CNC spindle toolholders used by professional woodworkers, fabricators, and CNC operators.

This bit is well suited for routing slots, dadoes, and profile cuts in panel processing, sign making, cabinet component fabrication, and plastic sheet work. The upcut flute direction makes it particularly effective in through-cuts and plunge entry situations where chip evacuation is a priority. The 1/2-inch shank diameter and 1.875-inch shank length provide stable engagement in both handheld router tables and CNC routing machines used in light industrial and shop environments.

Key Features

• Solid carbide construction for extended tool life in abrasive materials
• Upcut flute design pulls chips away from the cut zone, reducing re-cutting and heat buildup
• 30-degree helix angle promotes smooth shear action and surface finish quality
• Double-edge geometry provides balanced cutting forces and consistent stock removal
• Uncoated finish suitable for natural wood, plastics, solid surfaces, and wood composites
• Right-hand cutting direction compatible with standard router and CNC spindle rotation

Compatibility

Designed for use with routers and CNC routing machines accepting a 1/2-inch shank. Suitable for cutting natural wood, plastics, solid surfaces, and wood composites per manufacturer material application data. Part of the ONSRUD 52-200 series.

Installation Notes

Installation is performed by qualified CNC operators or woodworking professionals. Ensure the router or spindle is fully powered down and locked out before changing tooling. Seat the shank fully into the collet to the recommended engagement depth and torque the collet nut to the router or spindle manufacturer specification. Verify feed rate and spindle speed settings are appropriate for the workpiece material before beginning the cut.