The CMT Roundover Bit with Bearing - 5/8" Diameter, 1/2" Cutting Height, 1/16" Radius, 1/4" Shank is a precision carbide-tipped router bit engineered for creating smooth, consistent radius profiles along wood and laminate edges. With its compact 1/16" radius, this bit is especially well-suited for finishing laminates and softening sharp edges on furniture, cabinetry, and trim work - virtually eliminating the hand-filing step typically required when using conventional trim bits. The integrated ball-bearing guide pilots smoothly along the workpiece edge, delivering repeatable depth of cut on every pass.

Key Features

• Carbide-Tipped Cutting Edges (HW Material) - Hard carbide tips stay sharp longer through demanding cuts in hardwood, softwood, plywood, MDF, laminates, and plastics, reducing the frequency of bit replacement and sharpening.
• Fatigue-Proof Steel Body - The bit body is constructed from fatigue-proof steel, meaning it resists stress fractures and flexing under high-RPM router use, extending the service life of the tool.
• Integrated Ball-Bearing Guide - The bearing pilots along the workpiece edge to maintain a consistent cut depth automatically, so you get a uniform 1/16" radius profile without needing to set up a fence or guide rail.
• 1/16" Radius Profile - This small-radius roundover is ideal for finishing laminate edges and eliminating sharp corners on fine woodworking and cabinetry projects where a delicate, refined edge is required.
• 1/4" Shank - Fits standard 1/4" collet routers, including handheld routers and router tables, making this bit compatible with a wide range of common routing setups.
• 2-Flute (2-Tooth) Design - Two cutting edges provide a balanced, smooth cutting action that reduces vibration and produces a cleaner finished surface on each pass.
• Right-Hand Rotation - Standard right-hand rotation is compatible with conventional routers, requiring no special setup or reverse-rotation equipment.
• Black Bearing Washer Orientation - The bearing assembly requires the black bearing washer to be kept right-side up during reassembly to match bearing rotation - a design detail that prevents the bit from unscrewing during use and maintains safe operation.

Why This Product

• Purpose-built for laminate finishing - The 1/16" radius is specifically noted as excellent for finishing laminates, virtually eliminating the manual filing step that conventional trim bits require. This saves time and produces a cleaner, more professional result.
• Consistent, repeatable edge profiles - The integrated bearing guide automatically controls cut depth along the workpiece edge, making it straightforward to produce identical roundover profiles on multiple pieces without resetting guides between cuts.
• Versatile compatibility - The 1/4" shank fits a broad range of handheld routers and router tables, so this bit works with equipment you likely already own without requiring adapters or specialty collets.
• 13 radius options available in the CMT roundover line - This bit is part of a comprehensive roundover series offering 13 different radii, making it easy to match or expand your set as your project needs grow.

Specifications

• Manufacturer Part Number: 838.160.11
• Brand: CMT Orange Tools
• Diameter: 5/8"
• Cutting Height: 1/2"
• Total Length: 2-9/64"
• Radius: 1/16"
• Shank: 1/4"
• Number of Teeth: 2
• Rotation: Right-Hand (RH)
• Material: Carbide-Tipped (HW)

Approved Applications

• Rounding over and softening sharp edges on wood workpieces
• Finishing laminate edges - reduces or eliminates hand-filing after trimming
• Edge profiling on furniture, cabinetry, and trim components
• Decorative edge work on solid hardwood and softwood
• Edge profiling on plywood, MDF, chipboard, melamine, and plastic
• Use in handheld routers and router tables with 1/4" collets