Product Description
CMT Pair of Bore Reducers 1-1/4" to 1" by CMT are precision-machined adapter rings designed to reduce a 1-1/4" bore tool mounting to accept a 1" spindle. This set of two bore reducers allows woodworkers to mount saw blades and cutter heads with a 1-1/4" bore onto spindle moulders, shapers, and table saws equipped with a 1" arbor - expanding the range of compatible tooling without replacing the blade or the machine. Always installed in pairs for safe, centered tool seating, these reducers are an essential accessory for shops working with mixed bore tooling.
Key Features
- Reduces a 1-1/4" bore down to a 1" spindle - allows you to use larger-bore cutter heads and saw blades on 1" arbor machines without purchasing new tooling
- Sold as a pair (2 pieces) - must always be installed together, ensuring the tool is centered and balanced on the arbor for safe operation
- Original bore diameter of 1-1/4" (25.4mm bore) - matches the most common large-bore routing and sawing tools used on spindle moulders and shapers
- Designed for use on spindle moulders, shapers, and table saws - versatile across the most widely used stationary woodworking machines
Why This Product
- Solves a common bore mismatch problem - when a cutter head or saw blade has a 1-1/4" bore but your machine runs a 1" spindle, these reducers bridge the gap without requiring new tooling or machine changes
- Paired design means correct installation is built into the product - using both reducers together keeps the tool concentric on the arbor, reducing vibration and improving cut quality
- Compatible with three major machine types - spindle moulders, shapers, and table saws - making this a single solution for bore reduction across multiple machines in the shop
- From CMT, a manufacturer known for precision woodworking tooling accessories - the 25.4mm bore diameter is held to close tolerances for accurate and repeatable tool centering
Specifications
- Brand: CMT Orange Tools
- Order Number: 699.031.26
- Original Bore Diameter: 1-1/4"
- Reduced Bore Diameter: 25.4mm (1")
- Quantity: 2 pieces (must be used in pairs)
Approved Applications
- Bore reduction for saw blades and cutter heads
- Tool mounting on spindle moulders
- Tool mounting on shapers
- Tool mounting on table saws
Frequently Asked Questions
What bore sizes do these reducers convert between?
These bore reducers adapt a 1-1/4" (original) bore down to a 1" spindle. The reduced bore is 25.4mm, which corresponds to a standard 1" arbor used on many spindle moulders, shapers, and table saws.
Do I need both pieces, or can I use just one?
Both pieces must always be installed together. Using bore reducers in pairs ensures the cutter head or saw blade is centered and balanced on the arbor, which is critical for safe and accurate operation. Never use just one of the two reducers.
What machines are these bore reducers compatible with?
These reducers are designed for use on spindle moulders, shapers, and table saws. Any of these machines running a 1" arbor can accept cutter heads or saw blades with a 1-1/4" bore when these reducers are installed in pairs.
Can these bore reducers be used with both saw blades and cutter heads?
Yes. These bore reducers are suitable for adapting cutter heads as well as saw blades that have a 1-1/4" bore, allowing them to be mounted on a 1" spindle across the compatible machine types listed.
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