Product Description
CMT Adapter and Bushing for Twist Drill - 3.5x38mm is a precision-engineered mounting adapter designed to accept CMT twist drills on standard boring machine spindles. Built for woodworking production environments, this adapter bridges the gap between small-bore twist drills and 10x20mm spindle systems found on CNC boring machines and multi-spindle boring centers. Whether you are drilling chipboard, MDF, hardwood, softwood, plywood, or laminates, this adapter delivers a secure, repeatable connection that keeps productivity high and setup time low.
Key Features
- 3.5mm bore diameter - precisely accepts 3.5mm twist drills, giving you an exact, wobble-free fit that protects both the drill and the finished workpiece.
- 10x20mm parallel shank with driving flat - mates directly with standard 10mm boring machine spindles and adapter systems, so you can mount drills quickly without custom tooling or adapters.
- 1 1/2 in. total length - compact overall profile keeps the drill close to the spindle face, reducing runout and improving hole accuracy in production runs.
- Precision relief design - engineered clearances prevent binding and heat buildup during drilling, extending the service life of both the adapter and the twist drill.
- Compatible with CMT 364-365 series items - designed specifically to work within the CMT boring system, so tool changes are straightforward and consistent across your machine setup.
- Premium quality HWM construction with 2 precision ground cutting edges (Z2) and 2 spiral flutes - delivers clean, accurate entry cuts and efficient chip evacuation in a wide range of panel and solid wood materials.
Why This Product
- Woodworking shops running CNC boring machines or multi-spindle boring centers that need a reliable way to mount 3.5mm twist drills can use this adapter to maintain a secure, production-ready connection without modifying their existing spindle setup.
- The parallel shank with driving flat eliminates slippage under load - a key advantage when drilling dense materials like hardwood or laminates where torque demands are highest.
- With a total length of 1 1/2 in., this adapter keeps the drill extension short, which directly reduces chatter and improves hole placement accuracy across repeated drilling operations.
- Designed for use with CMT 364-365 series twist drills, this adapter is part of an integrated system - meaning you can match components with confidence rather than guessing at compatibility.
Specifications
- Manufacturer Part Number: 364.035.00
- Brand: CMT Orange Tools
- Description: Adapter and Bushing for Twist Drill 3.5x38mm
- Bore Diameter: 3.5mm
- Total Length: 1 1/2 in.
- Shank: 10x20mm
Approved Applications
- CNC boring machines
- Multi-spindle boring centers
- Drilling chipboard
- Drilling MDF
- Drilling hardwood
- Drilling softwood
- Drilling plywood
- Drilling laminates
Frequently Asked Questions
Which twist drill sizes is this adapter compatible with?
This adapter is designed for use with CMT 364-365 series twist drills and accepts a 3.5mm bore diameter, making it the correct mounting adapter for 3.5mm twist drills in that product family.
What shank size does this adapter use, and will it fit my boring machine?
The adapter uses a 10x20mm parallel shank with a driving flat. It is designed to fit standard 10mm boring machine spindles, including CNC boring machines and multi-spindle boring centers that accept this shank configuration.
What is the total installed length of this adapter?
The total length of the adapter is 1 1/2 in. (38mm). This compact length helps minimize drill extension beyond the spindle face, which supports better hole accuracy and reduced vibration during operation.
What materials can I drill using a twist drill mounted in this adapter?
When paired with a compatible CMT twist drill, this adapter supports drilling in chipboard, MDF, hardwood, softwood, plywood, and laminates - common panel and solid wood materials used in furniture and cabinet production.
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