Product Description
The CMT 824.129.00 Slot Cutter Arbor is a precision-machined steel arbor designed to mount CMT 822 series slot cutter blades onto 1/2 in. shank routers - giving woodworkers a reliable, wobble-free platform for cutting slots, grooves, and biscuit joinery profiles. Whether you are working at a router table, running a handheld router, or operating a CNC routing machine, this replacement arbor restores your slot cutter setup with a component built to CMT's machining standards. Its compact 3-13/16 in. total length and M12mm thread diameter make it a direct-fit solution for CMT 822 blade assemblies.
Key Features
- 1/2 in. shank - fits the most common router collet size, ensuring broad compatibility with handheld routers, router tables, and CNC routing machines without requiring adapters.
- M12mm thread diameter - matches the CMT 822 series slot cutter blade interface precisely, so blades seat correctly and run true without lateral play.
- 3-13/16 in. total length with 54mm relative length - a compact profile that keeps the cutter close to the collet for better stability and reduced vibration during cuts.
- Steel construction - a durable material choice that withstands the repeated torque and clamping forces involved in slot cutter operations, supporting long service life.
- Arbor replacement design for CMT 822 series slot cutters - lets you replace only the worn or damaged arbor component rather than the entire slot cutter assembly, reducing cost and downtime.
Why This Product
- Direct replacement for CMT 822 series arbors - if your existing arbor is worn, bent, or damaged, this component lets you restore your slot cutter system to full working order without replacing blades or bearings that are still serviceable.
- Precision-machined steel arbor body - accurate blade mounting means cleaner, more consistent slot cuts in solid hardwood, plywood, MDF, laminates, and similar sheet materials where slot depth and alignment matter.
- 1/2 in. shank for wide router compatibility - a standard shank size means this arbor works across a broad range of router platforms, making it a practical choice for shops that run multiple machines.
- Compact overall length supports stable operation - the 3-13/16 in. total length minimizes overhang from the collet, which helps reduce chatter and keeps groove cuts accurate across long workpiece runs.
Specifications
- Manufacturer Part Number: 824.129.00
- Brand: CMT Orange Tools
- Product Type: Slot Cutter Arbor
- Diameter: M12mm
- Total Length: 3-13/16 in.
- Relative Length: 54mm
- Shank: 1/2 in.
- Material: Steel
Approved Applications
- Mounting CMT 822 series slot cutter blades
- Slot and groove cutting in solid hardwood and softwood
- Slot cutting in plywood, MDF, chipboard, laminates, melamine, and plastic
- Biscuit joinery setup with compatible slot cutter blades
- Use with handheld routers, router tables, and CNC routing machines
Frequently Asked Questions
Which slot cutter blades is the CMT 824.129.00 arbor designed to fit?
This arbor is designed as a replacement arbor for the CMT 822 series slot cutter blades. The M12mm thread diameter is matched to that blade series for a precise, secure fit.
What shank size does this arbor use, and which routers will accept it?
The arbor uses a 1/2 in. shank, which is the standard collet size found on most full-size handheld routers, router tables, and CNC routing machines. No reducer or adapter is needed when using a 1/2 in. collet router.
What is the overall length of this slot cutter arbor?
The total length is 3-13/16 in., with a relative length of 54mm. This compact sizing helps keep the cutter assembly stable and close to the collet during use.
Can this arbor be used as a direct drop-in replacement if my current arbor is damaged?
Yes. The CMT 824.129.00 is specifically described as a replacement arbor for CMT 822 series slot cutter systems, so it is intended to let you replace just the arbor component without discarding functional blades or other parts of your slot cutter assembly.
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