CMT Dado and Planer Bit with Bearing - 1 1/4" Diameter, 5/8" Cutting Height, 1/2" Shank is a professional-grade carbide-tipped router bit engineered for cutting wide, flat-bottom dadoes and performing light surface planing on solid wood and wood composites. Built by CMT with a right-hand rotation and a 2-flute design, this bit is equally at home in a handheld router, a router table, or a CNC routing machine - delivering clean, splinter-free results across a broad range of woodworking applications.

Key Features

• Thick Carbide Tips (HW Material Grade) - hardwearing tungsten carbide construction resists wear during heavy dado routing and surface planing, reducing the frequency of bit replacement and lowering long-term tooling costs.
• Downward (Negative) Shear Angle Cutting Edges - pushes wood fibers down during the cut, producing flat, splinter-free bottoms and clean edges when routing hinge mortises, dadoes, or grooves in hardwood, softwood, or composite panels.
• Integrated Bearing Guide - provides a mechanical reference surface that controls lateral positioning during planing and dado work, helping you maintain consistent width and alignment without additional setup fixtures.
• 2-Flute (2-Tooth) Configuration - balances cutting speed with surface quality, giving you efficient material removal while still producing smooth flat-bottom results on natural wood and wood composites.
• 1/2" Shank Diameter - the larger shank diameter compared to 1/4" collets reduces vibration and deflection during routing, resulting in more accurate cuts and extended bit life at typical router speeds.
• Right-Hand (RH) Rotation - compatible with standard right-hand collet routers and CNC spindles, simplifying tool changes and ensuring correct chip-ejection direction during use.
• 2 3/4" Total Length - compact overall length keeps the bit stable in the collet and minimizes overhang, which contributes to reduced vibration and improved cut quality in both table-mounted and handheld routing setups.

Why This Product

• The negative shear angle geometry actively suppresses fiber tearout as the bit cuts, making this an effective choice for routing dadoes and mortises in hardwoods, plywood, MDF, and laminates where surface quality matters.
• The bearing guide eliminates guesswork during surface planing and wide dado routing - you get repeatable, consistent results pass after pass without constantly re-measuring or repositioning a fence.
• The 1/2" shank and compact 2 3/4" total length work together to deliver a rigid, low-vibration setup - important when you need flat, smooth bottoms on dadoes used for shelving, cabinetry, or joinery work.
• The thick carbide tip construction and right-hand cutting geometry make this bit a practical option for both handheld routers and router tables, giving you flexibility across different workflow setups without needing a dedicated specialty bit for each application.

Specifications

• Manufacturer Part Number: 852.503.11B
• Brand: CMT Orange Tools
• Diameter: 1 1/4"
• Cutting Height: 5/8"
• Total Length: 2 3/4"
• Shank: 1/2"
• Number of Teeth: 2
• Material: HW (Tungsten Carbide-Tipped)
• Rotation: Right-Hand (RH)
• Product Type: Dado and Planer Bit with Bearing

Approved Applications

• Routing wide dadoes in solid hardwood and softwood
• Routing wide dadoes in plywood, MDF, chipboard, and melamine panels
• Surface planing and flat-bottom routing operations
• Hinge mortise routing using standard mortising jigs
• Routing in plastic and laminated composites