CMT 857.503.11 Chamfer Bit with Bearing by CMT is a precision-ground, carbide-tipped routing bit designed to cut clean, accurate 15 deg. bevels and chamfers along the edges of wood and wood composite materials. With a 1/2" shank, a 31/32" cutting diameter, and a 7/8" cutting height, this right-hand rotation bit is well suited for edge profiling on furniture, decorative boxes, multi-sided containers, and larger-scale architectural elements such as beams and columns. Whether you are working at a router table, with a handheld router, or on a CNC routing machine, this chamfer bit delivers consistent, repeatable results guided by its integrated ball-bearing pilot.

Key Features

• 15 deg. chamfer angle with ball-bearing pilot - the fixed 15 deg. bevel angle and bearing guide hold the bit at a consistent position against the workpiece edge, eliminating guesswork and producing repeatable chamfers pass after pass.
• 31/32" cutting diameter and 7/8" cutting height - the generous cutting geometry allows this bit to handle deeper edge profiles in a single pass, reducing the need for multiple setups on thicker stock.
• HW (tungsten carbide) blade material - hard-wearing carbide cutting edges stay sharp longer than high-speed steel alternatives, maintaining clean bevel cuts even on dense hardwoods, plywood, and composite panels.
• 2-flute (2-tooth) design - dual cutting edges balance the load during routing, producing a smoother finished surface and reducing tear-out on the bevel face.
• 1/2" shank - the full 1/2" shank provides a secure, low-vibration connection in standard router collets, improving cut accuracy and reducing chatter on long bevel runs.
• Right-hand rotation - standard RH rotation is compatible with the vast majority of handheld routers, router tables, and CNC routing machines, making this bit a versatile shop addition.
• 2-51/64" total length - the overall length provides adequate clearance for most router table setups and handheld routing applications without requiring extended collet adapters.

Why This Product

• The integrated ball-bearing pilot removes the need for a fence when chamfering edges, making it straightforward to rout curved or irregular edges at a consistent 15 deg. bevel angle.
• The 7/8" cutting height means this bit can chamfer thicker workpiece edges in one router pass, which is especially useful when profiling beams, columns, or thick furniture components.
• HW carbide construction keeps the cutting edges serviceable through extended production runs on hardwood and composite materials, reducing downtime for bit changes or sharpening.
• The 15 deg. angle makes this bit particularly effective for constructing multi-sided decorative projects - such as boxes and containers - where precise, identical bevel cuts on each panel are essential for tight miter-style joints.

Specifications

• Manufacturer Part Number: 857.503.11
• Brand: CMT Orange Tools
• Angle: 15 deg.
• Diameter: 31/32"
• Cutting Height: 7/8"
• Total Length: 2-51/64"
• Shank: 1/2"
• Number of Teeth: 2
• Blade Material: HW (Tungsten Carbide)
• Rotation: Right-hand (RH)

Approved Applications

• Chamfering and beveling board and panel edges
• Decorative edge profiling on furniture components
• Building multi-sided decorative boxes and containers with precise bevel joints
• Profiling large-scale architectural elements such as beams and columns