Product Description
CMT Slot Cutter Arbor with Bearing is a precision-machined steel arbor designed to mount CMT 823 series slot cutter blades with a 45 deg. bore. Built for use with handheld routers, router tables, and CNC routing machines, this arbor provides a stable, accurate foundation for cutting consistent slots and grooves in a wide range of materials. With a 1/2 in. shank and a total length of 2-13/32 in., it delivers reliable alignment and wobble-free performance for joinery work and slot-cutting applications.
Key Features
- 1/2 in. shank diameter - fits standard 1/2 in. router collets for broad compatibility with common handheld routers, router tables, and CNC machines, so you can put it to work without adapter hardware.
- Integrated bearing guide - the included bearing controls cut depth automatically by riding along the workpiece surface, reducing the need for fences or secondary setups and keeping your slots consistent pass after pass.
- Designed specifically for CMT 823 slot cutters with 45 deg. bore - purpose-built geometry ensures the blade seats correctly and runs true, eliminating fit issues that can cause vibration or inaccurate cuts.
- Steel construction - the all-steel body resists deflection under load, supporting smooth, stable cuts through solid hardwood, softwood, plywood, MDF, chipboard, laminates, melamine, and plastic.
- Total length of 2-13/32 in. - a compact overall length keeps the tool balanced and manageable in both handheld and table-mounted routing configurations.
Why This Product
- If you run CMT 823 slot cutter blades with a 45 deg. bore, this is the purpose-matched arbor - purpose-built fit means no guesswork about blade compatibility or seating accuracy.
- The bearing guide does the depth-control work for you, making it straightforward to produce repeatable, clean slots without complicated fence adjustments or test cuts.
- Steel construction keeps the arbor body rigid under the lateral forces of slot cutting, helping you maintain cut accuracy even through dense or layered materials like plywood and MDF.
- The 1/2 in. shank is the most widely used router collet size, so this arbor integrates directly into most existing router setups - no special tooling or adapters required.
Specifications
- Manufacturer Part Number: 824.122.10
- Brand: CMT Orange Tools
- Product Type: Slot Cutter Arbor with Bearing
- Shank: 1/2 in.
- Total Length: 2-13/32 in.
- Material: Steel
- Compatible Slot Cutters: CMT 823 series (45 deg. bore)
Approved Applications
- Mounting CMT 823 slot cutter blades with 45 deg. bore
- Cutting slots and grooves in solid hardwood and softwood
- Slot cutting in plywood, MDF, chipboard, laminates, melamine, and plastic
- Biscuit joinery preparation and panel assembly setups
- Handheld router slot cutting
- Router table slot and groove operations
- CNC routing machine applications
Frequently Asked Questions
Which slot cutter blades are compatible with this arbor?
This arbor is designed specifically for CMT 823 series slot cutter blades that feature a 45 deg. bore. It is not intended for use with blades that have a different bore geometry or that belong to other CMT series.
Does this arbor come with the bearing already installed?
Yes - this model is the version supplied with the bearing guide already included as part of the assembly, as indicated by the product description "Slot Cutter Arbor with Bearing."
What router collet size does this arbor require?
This arbor has a 1/2 in. shank, so it requires a router with a 1/2 in. collet. This is the most common collet size on full-size handheld routers, router tables, and CNC routing machines.
What is the total length of this arbor and why does it matter?
The total length is 2-13/32 in. This compact length helps keep the tool balanced and reduces overhang from the collet, which contributes to stable, vibration-free performance during slot cutting operations.
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