Product Description
The CMT 824.121.10 Slot Cutter Arbor is a precision-engineered steel arbor designed to mount CMT 823 series slot cutter blades with 45 deg. bore. Built without a bearing or stop collar, this arbor gives woodworkers and cabinetmakers the flexibility to configure their slot cutting setup exactly as needed - pairing it with separately sourced bearings and collars to match specific groove depths and material requirements. With a 1/2 in. shank and a total length of 2 11/64 in., it is compatible with handheld routers, router tables, and CNC routing machines, making it a versatile component for precision joinery work in solid hardwood, softwood, plywood, MDF, and sheet goods.
Key Features
- 1/2 in. shank diameter - fits the most widely used router collets, ensuring broad compatibility across handheld routers, router tables, and CNC setups without the need for a reducer bushing.
- Steel construction - provides the rigidity and durability needed to maintain concentricity under the lateral loads generated by slot cutter blades, reducing vibration and extending blade life.
- Total length of 2 11/64 in. - offers sufficient reach for accessing standard workpiece profiles while keeping the arbor compact enough for controlled, stable operation.
- Designed for CMT 823 slot cutters with 45 deg. bore - ensures a precise, matched fit with CMT's 823 series blades, eliminating compatibility guesswork and promoting accurate, wobble-free cuts.
- Without bearing and stop collar - allows the user to select and configure their own bearing size and collar, giving full control over groove depth and cutter positioning for custom joinery applications.
Why This Product
- Designed specifically for CMT 823 slot cutter blades with 45 deg. bore, this arbor delivers a precise mechanical match - meaning blade runout is minimized and slot accuracy is maintained cut after cut.
- The bearing-free and collar-free design makes this arbor ideal for builders who already have the bearings and collars they need, or who want to configure a custom depth-of-cut setup without paying for hardware they will not use.
- Steel construction combined with the 1/2 in. shank gives this arbor the structural strength to handle the lateral forces of slot cutting operations, making it a reliable long-term component in professional router setups.
- At 2 11/64 in. total length, the arbor is proportioned to work efficiently in router table and handheld router applications, keeping your tool setup balanced and manageable during extended use.
Specifications
- Manufacturer Part Number: 824.121.10
- Brand: CMT Orange Tools
- Product Type: Slot Cutter Arbor
- Shank: 1/2 in.
- Total Length: 2 11/64 in.
- Material: Steel
- Compatible Blade Series: CMT 823 - Slot Cutters with 45 deg. Bore
- Bearing Included: No
- Stop Collar Included: No
Approved Applications
- Mounting CMT 823 series slot cutter blades with 45 deg. bore
- Grooving and slot cutting in solid hardwood and softwood
- Slot cutting in plywood, MDF, chipboard, and laminates
- Biscuit joinery preparation and slot routing setups
- Custom router table slot cutter configurations
- CNC routing machine slot cutter arbor applications
Frequently Asked Questions
Which slot cutter blades is this arbor designed to work with?
This arbor is designed specifically for CMT 823 series slot cutters with a 45 deg. bore. It is engineered to accept that blade bore geometry precisely, ensuring a secure, concentric fit for accurate slot cutting performance.
Does this arbor include a bearing or stop collar?
No - the CMT 824.121.10 is supplied without a bearing and without a stop collar. This configuration is intended for users who prefer to select their own bearing size or who already have compatible bearings and collars for their specific groove depth requirements.
What shank size does this arbor use, and which machines will it fit?
The arbor features a 1/2 in. shank, which is compatible with handheld routers, router tables, and CNC routing machines equipped with a 1/2 in. collet. No reducer bushing is required when using a standard 1/2 in. collet.
What is the total length of this arbor, and why does it matter?
The total length is 2 11/64 in. This measurement determines how the arbor positions the blade relative to the router collet and workpiece, and is an important consideration when planning your cutter stack height or selecting a compatible bearing and collar combination for a given groove depth.
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