Product Description
The CMT 541.552.00 Spacer is a precision-ground shim component from CMT, designed to fine-tune tool positioning on cutter head spindles and routing assemblies. With a 15.8mm outer diameter, a 3.25mm bore, and a 2mm plate thickness, this compact spacer gives woodworkers and machinists exact control over cutter stack spacing - reducing gaps, correcting offsets, and ensuring consistent results on cutter head setups. Whether you are adjusting tool depth on a router table or building out a multi-cutter stack to a precise width, this small-profile spacer delivers the dimensional accuracy that professional tool assemblies demand.
Key Features
- 15.8mm outer diameter - sized to seat correctly within CMT cutter head assemblies, keeping the spacer aligned and preventing lateral shift during operation.
- 3.25mm bore diameter - matches specific spindle shaft diameters for a snug, centered fit that maintains tool concentricity and reduces runout.
- 2mm plate thickness - a precise, repeatable increment for stacking and spacing adjustments, letting you dial in cutter position without guesswork.
- Precision-ground construction - tight tolerances across all three dimensions mean consistent, accurate tool positioning every time the spacer is installed.
- Functions as a shield for assembly - protects adjacent tooling components during assembly, reducing the risk of contact damage between cutters or other hardware.
Why This Product
- A 2mm plate thickness provides a well-defined, measurable spacing increment - useful when stacking cutters to achieve a specific combined cutting width without trial-and-error shimming.
- The 3.25mm bore is a purpose-specific fit, not a generic adapter, which means the spacer stays centered on the shaft and does not introduce wobble or misalignment into the tool stack.
- The shield-for-assembly function means this spacer does more than fill space - it actively protects adjacent cutters and components from contact damage during the build-up process.
- As an active CMT product (status: active), this spacer is a current, supported component in the CMT tooling lineup - making it a reliable choice for maintaining or expanding cutter head configurations.
Specifications
- Brand: CMT Orange Tools
- MPN: 541.552.00
- Diameter: 15.8mm
- Bore Diameter: 3.25mm
- Plate Thickness: 2mm
- Product Type: Precision Spacer
Frequently Asked Questions
What is the purpose of the 2mm plate thickness on this spacer?
The 2mm plate thickness provides a precise, fixed increment for adjusting the position of cutters or other tooling components along a spindle. By adding one or more of these spacers to a tool stack, you can shift the cutting position by exact 2mm increments, which is especially useful when building up a cutter head assembly to a desired total cutting width.
What spindle shaft size does the 3.25mm bore fit?
The bore diameter of this spacer is 3.25mm, so it is designed for spindle shafts of that specific size. Always verify your cutter head or spindle shaft diameter matches 3.25mm before installing this spacer to ensure a proper, centered fit.
What does "shields for assembly" mean in the context of this spacer?
The shield-for-assembly function means the spacer can be placed between cutting components during the assembly process to prevent direct metal-to-metal contact between adjacent tooling elements. This helps protect the edges and surfaces of cutters and other hardware from contact damage while the tool stack is being configured.
Can this spacer be used with any cutter head, or only specific CMT systems?
This spacer is classified under CMT's cutter head and bore reducer tooling category. Its dimensions - 15.8mm outer diameter and 3.25mm bore - are the governing factors for compatibility. It will fit any assembly that accommodates a 15.8mm outer diameter spacer with a 3.25mm bore opening. Verify your specific assembly's dimensional requirements before use.
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