CMT 839.817.11 Beading Bit with Bearing by CMT is a precision router bit designed to cut elegant bead profiles along wood edges, adding a refined decorative detail to furniture, cabinetry, and millwork. The beading profile is similar to a roundover cut, but the smaller bearing creates a subtle inset at the base of the curve - giving woodworkers an extra decorative option that sets finished pieces apart. With a 1/2 in. shank and a 3/8 in. radius, this bit is built for use in handheld routers, router tables, and CNC routing setups where consistent, repeatable edge detail work is required.

Key Features

• Beading profile with bearing guide - the smaller bearing produces a delicate inset at the base of the cut, giving you an additional decorative edge option beyond a standard roundover, ideal for fine furniture and cabinet work.
• 3/8 in. radius cutting geometry - delivers a well-proportioned bead profile suited to a wide range of edge detailing applications on solid hardwood, softwood, sheet goods, and more.
• 1/2 in. shank diameter - provides maximum stability and reduced vibration during routing, resulting in smoother cuts and improved surface finish quality.
• HW (hardwood carbide) cutting material - tungsten carbide construction maintains sharp cutting edges longer than high-speed steel, reducing the frequency of bit changes and keeping production moving.
• 2-flute (2-tooth) design - dual cutting edges improve chip evacuation and surface finish, helping achieve clean bead profiles in a single pass.
• Right-hand rotation - standard RH orientation is compatible with the vast majority of handheld routers, router table setups, and CNC spindles, making setup straightforward.
• 1-1/4 in. cutting diameter with 5/8 in. cutting height - sized for precise edge work on typical stock thicknesses used in furniture and cabinet construction.
• 2-1/2 in. total length - compact overall length provides clearance compatibility with standard router collets and table setups without excessive overhang.

Why This Product

• The beading bit produces a classic decorative profile that goes beyond a simple roundover - the inset at the base of the curve adds visual depth and a finished, handcrafted look to edges on cabinet doors, frames, and furniture components.
• The ball-bearing guide rides along the workpiece edge to control depth of cut automatically, eliminating the need for additional fence setup on many freehand routing tasks and delivering consistent results pass after pass.
• Carbide construction (HW material grade) means the cutting edges hold up to the demands of both hardwood and softwood stock, giving this bit a longer productive lifespan compared to lesser tool steels.
• The 1/2 in. shank is the preferred choice for router table and heavy-duty handheld work, reducing deflection and chatter so that delicate bead details come out clean and crisp even in dense hardwoods.

Specifications

• Manufacturer Part Number: 839.817.11
• Brand: CMT Orange Tools
• Diameter: 1-1/4 in.
• Cutting Height: 5/8 in.
• Total Length: 2-1/2 in.
• Radius: 3/8 in.
• Shank: 1/2 in.
• Number of Teeth: 2
• Material: HW
• Rotation: Right-hand (RH)

Approved Applications

• Creating bead profiles on wood edges
• Decorative edge detailing on furniture and cabinet components
• Handheld router edge work
• Router table edge profiling
• CNC routing decorative profiles
• Millwork and trim detailing