The CMT 838.380.11 Roundover Bit with Bearing is a precision-crafted router bit designed to produce smooth, consistent 1/2" radius roundover profiles on wood edges and workpieces. With a 1 1/2" cutting diameter, 3/4" cutting height, and a 1/4" shank, this bit is purpose-built for router table use and delivers the controlled, repeatable edge shaping that furniture makers, cabinetmakers, and woodworkers depend on. Carbide-tipped cutting edges and fatigue-proof steel construction make this an edge profiling tool built for demanding shop applications - from solid hardwood furniture edges to softening sharp corners on plywood and MDF panels.

Key Features

• Hardmetal (HW) Carbide-Tipped Cutting Edges - industrial-grade carbide tips retain sharpness through extended use, reducing the frequency of bit changes and delivering cleaner cuts across a wider range of materials.
• Fatigue-Proof Steel Body - the bit body resists stress and flexion under high-RPM router table conditions, providing a stable, vibration-resistant platform for accurate, repeatable roundover profiles.
• Ball-Bearing Guide - the integrated bearing pilots smoothly along the workpiece edge, maintaining a consistent depth of cut without the need for a fence, and producing uniform 1/2" radius profiles pass after pass.
• 2-Flute Cutting Configuration - dual carbide-tipped cutting edges produce a balanced, smooth cut that minimizes tearout and surface chatter, leaving edges ready for finishing with minimal sanding.
• Right-Hand Rotation - standard RH rotation is compatible with virtually all handheld routers and router tables, ensuring straightforward, safe setup and operation.
• 1/4" Shank Diameter - the compact 1/4" shank fits a wide range of router collets, making this bit accessible for use in both trim routers and full-size router tables equipped with a 1/4" collet.
• Decorative Inset Detail - the bearing arrangement on CMT roundover bits creates a delicate inset at the base of the cut, giving woodworkers an additional decorative edge option beyond a plain roundover profile.
• Router Table Required for This Radius - bits with a radius from 1" to 1 1/2" are designed for router table use only, ensuring safe, controlled cutting at this larger diameter.

Why This Product

• At a 1/2" radius with a 1 1/2" cutting diameter, this bit produces bold, furniture-grade roundover profiles that soften edges dramatically - ideal for tabletops, cabinet doors, and decorative trim work where a substantial, smooth profile is the goal.
• The integrated ball-bearing guide eliminates the need for a fence when running profiles, allowing the bit to follow curved or irregular workpiece edges as easily as straight ones - a practical advantage for custom and freeform furniture work.
• CMT's roundover bit line offers 13 different radii options, and the consistent 1/2" bearing diameter standard across most sizes means woodworkers can switch between profiles without having to rebuild their setup from scratch.
• Carbide-tipped edges on a fatigue-proof steel body mean this bit stays sharp and dimensionally stable through repeated use on hardwoods, softwoods, and sheet goods alike - reducing downtime and replacement costs in a production or hobbyist shop environment.

Specifications

• Manufacturer Part Number: 838.380.11
• Brand: CMT Orange Tools
• Diameter: 1 1/2"
• Cutting Height: 3/4"
• Total Length: 2-13/32"
• Radius: 1/2"
• Shank: 1/4"
• Number of Teeth: 2
• Material: HW (Hardmetal Carbide-Tipped)
• Rotation: Right-Hand (RH)
• Bit Type: Roundover Bit with Bearing

Approved Applications

• Rounding over edges on solid hardwood furniture and cabinetry
• Softening sharp corners on plywood, MDF, and chipboard panels
• Edge profiling on router table setups
• Decorative edge work requiring a subtle inset detail at the base of the cut
• Furniture edge shaping on tabletops, doors, and trim pieces