Product Description
CMT 365.045.00 Bushing for Twist Drill is a precision-ground mounting bushing designed to securely seat CMT 363 solid carbide twist drills into CMT 364 adapters, enabling accurate installation on boring machine spindles. With a bore diameter of 4.5mm (11/64 in.) and a total length of 23mm, this bushing delivers a tight, repeatable fit that keeps twist drills properly aligned during high-cycle boring operations on CNC boring machines and multi-spindle boring centers.
Key Features
- 4.5mm (11/64 in.) bore diameter - matches the shank of CMT 363 solid carbide twist drills exactly, eliminating play and ensuring concentricity during drilling operations.
- 23mm total length - provides sufficient engagement depth to support the twist drill shank securely along its full contact zone, reducing vibration and deflection.
- 10mm shank - sized to interface with the CMT 364 adapter, creating a complete, purpose-matched mounting system that simplifies spindle setup.
- Precision-ground construction - ensures consistent bore-to-shank concentricity, which translates directly to accurate hole placement and clean exit points in panel and sheet goods.
- Designed for use with CMT 364 adapters - the bushing and adapter work as a matched pair, so there is no need to source third-party components or adapt incompatible hardware.
Why This Product
- If you run CMT 363 solid carbide twist drills on a boring machine, this bushing is the purpose-built interface component - it closes the gap between the drill shank and the CMT 364 adapter so the system functions as designed, without improvised solutions.
- The 4.5mm bore is ground to match the 11/64 in. twist drill diameter precisely, which matters on multi-spindle centers where even slight misalignment across heads causes cumulative positional error.
- At 23mm total length with a 10mm shank, the geometry of this bushing is engineered specifically for CNC boring machine spindle depths - it fits without shimming, spacers, or modification.
- Using a matched CMT bushing, adapter, and twist drill together keeps accountability and compatibility within a single system, reducing troubleshooting time when setup problems arise on the shop floor.
Specifications
- Manufacturer Part Number: 365.045.00
- Brand: CMT Orange Tools
- Product Type: Bushing for Twist Drill
- Bore Diameter: 4.5mm (11/64 in.)
- Total Length: 23mm
- Shank: 10mm
- Compatible Drills: CMT 363 Solid Carbide Twist Drills
- Compatible Adapter: CMT 364 Adapter
Approved Applications
- CNC Boring Machine spindle mounting
- Multi-Spindle Boring Center twist drill installation
- Panel and sheet goods production boring operations
Frequently Asked Questions
What is the bore diameter of the CMT 365.045.00 bushing?
The bore diameter is 4.5mm, which corresponds to the 11/64 in. shank size of CMT 363 solid carbide twist drills.
Does this bushing work as a standalone component, or does it require an adapter?
This bushing is designed to work in conjunction with CMT 364 adapters. The bushing seats the twist drill, while the adapter mounts the assembly onto the boring machine spindle - both components together form the complete mounting solution.
What is the total length and shank size of this bushing?
The CMT 365.045.00 has a total length of 23mm and a 10mm shank, sized to interface correctly with the CMT 364 adapter on CNC boring machine and multi-spindle boring center spindles.
Which twist drills are compatible with the CMT 365.045.00 bushing?
This bushing is designed specifically for use with CMT 363 solid carbide twist drills. Using it with drills outside the CMT 363 series may result in an improper fit and should be avoided.
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