CMT Solid Carbide Upcut Ball Nose Spiral Bit - 5/8 in. is a precision CNC router bit engineered for smooth 3D surface machining, relief carving, and curved profile work. Built entirely from a super-micrograin solid carbide formulation, this two-flute upcut spiral bit delivers a sharp, long-lasting cutting edge that shears wood cleanly and evacuates chips efficiently - keeping the tool running cooler and extending edge life across demanding routing applications. The spherical ball nose tip produces flowing, sculpted surfaces on solid wood, wood composites, plastics, and laminates, making it a go-to choice for CNC 3D routing, panel sizing, and contour copying work.

Key Features

• Super-micrograin solid carbide construction - produces and holds a keen cutting edge longer than standard carbide formulations, allowing more resharpenings and reducing replacement frequency on high-volume CNC operations.
• Low-angle upcut spiral geometry - designed specifically to shear wood fibers cleanly rather than tearing them, resulting in cleaner edge quality on solid hardwood, softwood, plywood, MDF, chipboard, and laminate materials.
• Efficient chip ejection design - the upcut flute direction pulls chips up and away from the cut zone, helping the bit run cooler and protecting both the workpiece surface and the cutting edges during extended routing sessions.
• Ball nose profile with 5/16 in. radius - the spherical tip generates smooth, continuous curved surfaces ideal for 3D sculpting, relief carving, and profile machining without step marks between passes.
• Right-hand (RH) rotation with 2-flute configuration - balances cutting aggressiveness with surface finish quality, suitable for a wide range of CNC routing applications on solid wood and composite materials.
• 5/8 in. shank diameter - provides a secure, rigid connection in compatible CNC router collets, minimizing runout and vibration that could affect surface finish or dimensional accuracy.
• 2-1/4 in. cutting height - allows routing through thicker stock and multi-pass 3D contour work without having to reposition the tool, improving workflow efficiency on taller workpieces.

Why This Product

• The super-micrograin carbide formula was purpose-built to stay sharp longer - meaning fewer tool changes, lower cost per part, and consistent surface quality over the life of the bit on production CNC routing work.
• The low-angle spiral geometry shears rather than scrapes, which translates directly to cleaner edges on laminates, plastics, and solid wood - reducing sanding or finishing time after the routing operation.
• With a 2-1/4 in. cutting height and a 5/16 in. ball nose radius, this bit handles both shallow decorative passes and deeper 3D relief cuts in a single setup, covering a broad range of sculpting, copying, and panel sizing tasks.
• Solid carbide construction - as opposed to carbide-tipped designs - means the entire body can be resharpened multiple times, extending the usable life of the bit and delivering better long-term value for high-throughput CNC shops.

Specifications

• Manufacturer Part Number: 199.509.11
• Brand: CMT Orange Tools
• Product Type: Solid Carbide Upcut Ball Nose Spiral Bit
• Diameter: 5/8 in.
• Cutting Height: 2-1/4 in.
• Total Length: 4-5/16 in.
• Radius: 5/16 in.
• Shank Diameter: 5/8 in.
• Number of Teeth: 2
• Rotation: Right-hand (RH)
• Material: Solid Carbide (HWM super-micrograin formulation)

Approved Applications

• CNC 3D routing and contour machining
• Curved and sculpted surface profiling
• Relief carving and 3D pattern routing
• Cutting and copying operations
• Panel sizing
• General routing on solid wood, wood composites, plastic materials, and laminates