Automatic Numbering Heads - Model 123
The CMT Model 123 stands out as the fastest solution for serial numbering in the realm of industrial direct part marking. Its versatility shines across industries, handling everything from marking baseball cards to diaper boxes with precision and efficiency. Whether your application requires speed, durability, or adaptability, the Model 123 delivers a permanent, reliable mark that meets the highest standards
At the heart of the Model 123's efficiency is its automated wheel, powered by a claw-shaped actuator. This actuator can be triggered through either a mechanical trip mechanism or a pneumatic actuator, offering flexibility for integration into diverse production environments. This design ensures seamless operation, making it the ideal choice for businesses prioritizing fast, consistent, and durable marking solutions.



Automatic Numbering Heads
Technical guide to Model 123.
Custom Designed
Selections required for manual numbering head
Mounting Style
- Press shank – size of the round or square shank and the length. Standard size is 1” diameter by 2” long
- Dovetail mount – please provide length across dovetail, or machine model this tool will be used in
- Flat top mount with tapped holes. CMT can provide the recommended design during the approval process.
Character Size
- Metric or Inches for each characters
- Remember it is easy to overestimate character size
Number of WHeels
- Number of wheels in the numbering head - automatic and manually indexed
- The tooling design may containa suffix or prefix type holders
Wheel Readings
- The standard, and most common, readings are figures 0 through 9.
- The wheels may be designed with 10,12, or 14 station wheels.
- Each station is engraved with character. They may be different or the same (repeated).
Actuation Method
- Pneumatic cylinder
- Mechanical trip bar

Technical Specifications

- Solid Frame - designed and manufactured to fit wheel in customer configuration.
- Extra wide CMT proprietary cam design.
- Large shaft design to meet extra marking force for indention marking.
- CMT patented pawl design – to allow for easy setup in either direction.
- Double pass engraved (NOT EDM)
- Wheels made of W-1 Tool Steel
- Wheels engraved with 45 Degree engraving angle
- Wheels engraved with Sharp face character
- Wheels have Gothic standard (San Serif) font for quick easy reading
- Extra wide CMT proprietary cam design