Product Description
The CMT 811.222.11B Pattern Bit with Bearing is a precision-ground, double-edged straight cutting bit engineered for template routing, dadoes, grooves, and pattern work across a wide range of wood-based materials. Built from micrograin carbide bonded to a fatigue-proof steel body, this 7/8 in. diameter bit delivers consistent, clean cuts whether you are running production runs on a router table or freehand routing with a handheld machine. The integrated bearing guide makes it an ideal choice for flush-trimming along templates and jigs, giving woodworkers and cabinet shops repeatable accuracy on every pass.
Key Features
- Micrograin Carbide Cutting Edges - dense carbide formulation resists wear during heavy production use in hardwood, plywood, composites, and sheet goods, extending edge life between sharpenings.
- Fatigue-Proof Steel Body - the body is manufactured from special fatigue-proof steel, reducing the risk of stress fractures under sustained routing loads for a safer, longer-lasting tool.
- CMT Orange Shield Non-Stick P.T.F.E. Coating - the trademark orange coating prevents resin, pitch, and wood residue from adhering to the bit surface, reducing heat buildup and making cleanup faster between operations.
- 2-Flute Geometry - the double-edged configuration balances cutting load and promotes chip evacuation, resulting in smoother finished surfaces with less tearout.
- Bearing Guide Included - the integrated bearing allows the bit to follow templates and patterns precisely, making it purpose-built for flush-trimming and template routing applications.
- Strict Quality Testing - every bit is individually tested for cutting tolerance, balance, and concentricity, so you can expect vibration-free performance straight out of the packaging.
- Right-Hand Rotation - compatible with standard router spindle direction, ensuring safe and proper engagement with handheld routers, router tables, and CNC routing machines.
Why This Product
- The bearing guide makes this bit a natural fit for template and pattern routing work - follow a jig or template edge for identical, repeatable cuts across multiple workpieces without layout lines or measuring.
- The P.T.F.E. non-stick coating addresses one of the most common production frustrations - pitch and resin buildup on the bit surface - keeping the cutter running cooler and reducing the frequency of cleaning stops during long sessions.
- With a 1/2 in. shank diameter and 7/8 in. cutting diameter, this bit sits in a practical mid-range size that handles dadoes, grooves, and mortising tasks in solid hardwood, softwood, plywood, MDF, and composite panels without requiring oversized router hardware.
- Individually tested for balance and concentricity, this bit is appropriate for industrial-scale production environments where consistency across high-volume cuts matters as much as edge quality on any single pass.
Specifications
- Manufacturer Part Number: 811.222.11B
- Brand: CMT Orange Tools
- Diameter: 7/8 in.
- Cutting Height: 1 in.
- Total Length: 2-5/8 in.
- Shank: 1/2 in.
- Number of Teeth: 2
- Rotation: Right-Hand (RH)
- Blade Material: Micrograin Carbide (HW)
- Bit Type: Pattern Bit with Bearing
Approved Applications
- Template and pattern routing
- Flush trimming along jigs and guides
- Straight cuts including dadoes, grooves, and rabbets
- Mortising
- Plywood joinery
- Production routing in solid hardwood and softwood
- Routing composites, MDF, chipboard, and laminates
Frequently Asked Questions
What shank size does this pattern bit use?
This bit has a 1/2 in. shank diameter, making it compatible with routers and router tables equipped with a 1/2 in. collet. Always confirm your router's collet size before installing the bit.
What is the purpose of the bearing on this bit?
The integrated bearing guide rides along the edge of a template or jig, allowing the cutting edges to follow the pattern shape exactly. This makes the bit well suited for reproducing identical shapes across multiple workpieces - a common requirement in cabinet making, furniture production, and custom woodworking.
Why does CMT coat its bits with P.T.F.E.?
The orange P.T.F.E. non-stick coating serves a practical function during cutting operations - it inhibits pitch, resin, and wood residue from bonding to the bit surface. This keeps the bit running at a lower temperature, reduces friction during cuts, and makes the bit easier to clean, which collectively helps extend the tool's usable life.
Is this bit suitable for use with CNC routing machines as well as handheld routers?
Yes. The right-hand rotation, 1/2 in. shank, and strict quality testing for balance and concentricity make this bit appropriate for handheld routers, router tables, and CNC routing machines. The individual balance testing is particularly relevant for CNC applications where vibration at higher spindle speeds can affect surface quality and tool longevity.
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