Product Description
CMT Beading Bit with Bearing - 2 1/4" Diameter, 1 1/8" Cutting Height, 7/8" Radius, 1/2" Shank by CMT is a professional-grade router bit designed to produce a classic bead profile along wood edges. Similar to a roundover profile, a beading bit uses a smaller bearing to create a delicate inset at the base of the cut - giving woodworkers an extra decorative detail that sets furniture edges, cabinet faces, and millwork apart. With a 2 1/4" cutting diameter and a full 7/8" radius, this bit delivers a bold, well-defined bead in a single pass, making it a go-to choice for decorative edge work on solid hardwood, softwood, and sheet goods alike.
Key Features
- Beading Profile with Smaller Bearing Inset - the reduced bearing diameter creates a precise inset at the base of the cut, producing a distinct decorative bead rather than a plain roundover, expanding your design options on edges and profiles.
- Ball-Bearing Guide - the integrated bearing rides along the workpiece edge to maintain a consistent cutting depth on every pass, reducing the need for setup adjustments and helping produce repeatable results across long runs.
- 2-Flute Carbide (HW) Cutting Head - two hardmetal carbide teeth deliver smooth, clean cuts through solid wood and engineered sheet goods, balancing cutting speed with surface finish quality.
- 1/2" Shank - the larger shank diameter provides greater rigidity and reduced vibration compared to smaller shanks, which translates to cleaner cuts and improved control in both handheld routers and router tables.
- Right-Hand Rotation - engineered for standard right-hand router operation, compatible with the vast majority of fixed-base, plunge, and table-mounted routers in typical workshop setups.
- 2-Flute Design - two cutting edges per revolution increase the rate of material removal while helping maintain a polished surface on decorative profiles where finish quality is critical.
Why This Product
- The 7/8" radius is large enough to produce a visually prominent bead profile in a single pass - ideal for furniture makers and cabinetmakers who want a finished decorative edge without multiple setups or multiple bits.
- The bearing-guided design eliminates the need for fences or edge guides when routing freehand edges, making this bit practical for both router table use and handheld routing along curved or irregular stock.
- The 1 1/8" cutting height accommodates thicker stock and deeper profiles, giving you flexibility across a wider range of panel thicknesses and edge treatments without changing bits mid-project.
- The 1/2" shank combined with a 2-flute hardmetal carbide construction means this bit is built for professional use - reducing chatter and deflection that can ruin a delicate bead profile on fine woodworking projects.
Specifications
- Manufacturer Part Number: 839.991.11
- Brand: CMT Orange Tools
- Diameter: 2 1/4"
- Cutting Height: 1 1/8"
- Total Length: 2 61/64"
- Radius: 7/8"
- Shank: 1/2"
- Number of Teeth: 2
- Material: HW (Hardmetal Carbide)
- Rotation: Right-Hand (RH)
Approved Applications
- Creating bead profiles on wood edges
- Decorative edge work on furniture and cabinetry
- Millwork and architectural trim details
- Router table and handheld router use
Frequently Asked Questions
What is the difference between a beading bit and a roundover bit?
A beading bit is similar to a roundover bit in profile shape, but it uses a smaller bearing that produces a delicate inset - or fillet - at the base of the rounded cut. This inset creates a distinct decorative bead detail that a standard roundover bit does not produce. The CMT 839.991.11 uses exactly this approach to give woodworkers an extra decorative option on edges and moldings.
What router shank size is required for this bit?
This bit has a 1/2" shank, which requires a router or router table collet that accepts 1/2" shank bits. The 1/2" shank is the larger of the two common router shank sizes and provides improved rigidity and reduced vibration during cutting.
What is the cutting radius and cutting height of this bit?
The cutting radius is 7/8" and the cutting height is 1 1/8". Together, these dimensions define the size and depth of the bead profile this bit produces. The 7/8" radius creates a generous, well-defined bead suitable for furniture edges, cabinet details, and decorative trim work.
In which direction does this bit rotate?
This bit is designed for right-hand (RH) rotation, which is the standard direction for the overwhelming majority of consumer and professional routers. Always confirm your router's rotation direction before mounting any bit.
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