Product Description
CMT Roundover Bit with Bearing - 2" Diameter, 3/4" Radius, 1/2" Shank is a carbide-tipped router bit engineered to produce smooth, consistent curved edge profiles on wood, composite panels, and other workpiece materials. With a 3/4" radius and a 2" cutting diameter, this bit is sized for substantial roundover profiles - ideal for furniture edge work, cabinet doors, tabletops, and decorative trim. CMT builds this bit from fatigue-proof steel with carbide-tipped cutting edges and a ball-bearing guide that pilots along the workpiece edge, delivering repeatable depth of cut pass after pass. Bits with a radius of 1" or larger are designed for router table use, making this a dedicated router table bit for controlled, safe operation on larger profiles.
Key Features
- Carbide-Tipped (HW) Cutting Edges - industrial-grade carbide tips maintain sharpness through repeated cuts in hardwood, softwood, plywood, MDF, and composite materials, reducing the frequency of resharpening or replacement.
- Fatigue-Proof Steel Body - the bit body is manufactured from fatigue-proof steel, which resists stress fractures and deformation under the continuous rotational loads of router table use, contributing to long-term reliability.
- Ball-Bearing Guide Pilot - the bearing rolls along the workpiece edge to regulate cutting depth automatically, producing a uniform 3/4" radius profile without the need for fences or jigs in most setups.
- 2-Flute (2-Tooth) Design - two carbide cutting edges provide a balanced cut with good surface finish, reducing tearout on edge profiles in solid hardwood and engineered wood panels.
- Right-Hand (RH) Rotation - standard right-hand rotation is compatible with virtually all router tables and handheld routers, making it straightforward to integrate into existing setups.
- 1/2" Shank Diameter - the 1/2" shank provides maximum rigidity and reduced vibration compared to 1/4" shank bits, which is especially important when routing large-radius profiles at the 2" cutting diameter this bit operates at.
- Black Bearing Washer Orientation - the bearing assembly uses a directional washer that must be kept right-side-up during reassembly to match bearing rotation, preventing the bit from unscrewing during use - an important safety design detail.
Why This Product
- A 3/4" radius roundover is among the larger profiles in the CMT roundover lineup - suited to furniture legs, tabletop edges, and architectural millwork where a bold, smooth curve is the design goal rather than a subtle softened corner.
- The ball-bearing pilot eliminates the guesswork of setting fence depth for roundover cuts, allowing the bit to self-reference off the workpiece edge and deliver consistent results across long runs of material.
- CMT offers 13 different radii in their roundover bit series, and this bit's 1/2" bearing diameter specification means it fits within the standard CMT roundover family - making it easy to pair with other CMT profile bits for coordinated edge treatments on a single project.
- At 2-57/64" total length with a 1" cutting height, this bit has sufficient depth to handle thick stock in a single router table pass, reducing the number of passes needed and improving workflow efficiency on production or shop work.
Specifications
- Manufacturer Part Number: 838.990.11
- Brand: CMT Orange Tools
- Diameter: 2"
- Cutting Height: 1"
- Total Length: 2-57/64"
- Radius: 3/4"
- Shank: 1/2"
- Number of Teeth: 2
- Rotation: Right-Hand (RH)
- Material: HW (Carbide-Tipped)
Approved Applications
- Rounding over edges on solid hardwood and softwood
- Furniture edge profiling - tabletops, cabinet doors, chair rails
- Decorative trim and architectural millwork
- Edge profiling on plywood, MDF, and chipboard panels
- Router table edge work requiring a 3/4" radius profile
Frequently Asked Questions
Can this bit be used with a handheld router, or is it router table only?
According to CMT's guidelines for their roundover bit series, bits featuring a radius from 1" to 1-1/2" are to be used only on a router table. This bit has a 3/4" radius, which falls just below that threshold - however, the 2" cutting diameter and the substantial size of this bit make router table use the recommended and safer approach for controlled, consistent results. Always follow safe operating practices and secure your workpiece properly.
What is the bearing diameter on this bit?
CMT roundover bits with a radius up to and including standard sizes below 1-1/8" use a 1/2" bearing diameter. The 3/4" radius (28.6mm) and 1-1/4" radius (31.7mm) bits in the CMT lineup use a 3/4" (19mm) bearing diameter. This bit (3/4" radius) falls into the larger bearing group, so it uses the 3/4" bearing diameter.
What is the correct way to reassemble the bearing after cleaning?
CMT specifies that the black bearing washer must be kept right-side-up when reassembling the bearing, so that it corresponds with the direction of bearing rotation. Reassembling the washer upside-down can cause the bit to unscrew during operation, which is a serious safety hazard. Take care to note the orientation before disassembly if you remove the bearing for cleaning.
What materials can this roundover bit cut?
This bit's carbide-tipped cutting edges are suited for use in solid hardwood, softwood, plywood, MDF, chipboard, and similar wood-based materials. The fatigue-proof steel body and carbide tips are designed to handle the demands of repeated cuts across a range of workpiece densities encountered in furniture making, cabinetry, and millwork applications.
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