Whiteside RU4000H Roughing Up Cut Spiral - 3/8″ CD x 1″ CL x 3/8″ Shank

$73.00 $85.00

SKU: RU4000H Whiteside Machine Company

Only 5 left!

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Materials: Natural woods, composites

Recommended RPM: 16,000-18,000 (max 24,000)

Just as their name implies, these bits are designed for increasing cutting feed rates and decreasing project cut out time in plywood, melamine, mdf, and most engineered products.

  • TOOL SPECS: Solid carbide, up cut, roughing spiral with 3/8" cutting diameter, 3/8" shank, 1" cutting length, and 2-1/2" overall length for use in routers with a 3/8" collet.
  • THREE FLUTES: Perfect for cutting wood, wood products, and plastics in high-volume applications where fast feed rates are essential and a fine finish is not required.
  • ROUGHING: Designed to remove most of the material from a cut, preparing the surface for a finishing bit to achieve a smooth, polished result.
  • UP CUT SPIRAL: The upward cutting action allows for rapid chip removal, especially in deep cuts where chip packing is a concern. Chips are pulled out of the cut and towards the router.
  • MACHINES: Designed for use on CNC machines, delivering precise and efficient cuts for a variety of woodworking projects.
  • COMPATIBILITY: Also compatible with Castle and Porter Cable pocket machines.

Availability: In stock at our supplier — typically ships in 3–7 business days. Contact us to confirm lead time on larger quantities.

Feeds & Speeds
Based on published chip-load charts. Full calculator →
Cut not coming out right? Melting, chipping, burning or tearout — the Cut Doctor reads your settings (or a photo of the edge) and gives you the cause, corrected numbers, and the bit that fixes it. Free, no signup.