Part stiffness and wall thickness
The component and its fixture must support the marking force without movement, distortion or unacceptable witness marks.
Micro-percussion marking
Dot peen marking systems for robust permanent codes
Electromechanical and pneumatic marking solutions for durable DataMatrix codes, serial numbers and component data on metals and hard engineering materials.
Application-led engineering
Reliable marking where depth and durability matter
Dot peen marking uses a controlled stylus to create a sequence of closely spaced indentations in the component surface. The dot pattern can form human-readable characters, logos and machine-readable DataMatrix codes that remain identifiable through demanding production and service conditions.
The process is widely suited to machined, cast and fabricated metal components. It can create a permanent mark without consumable ink and can tolerate surface conditions that make adhesive labels impractical. Mark depth, dot spacing and impact energy are set around material hardness, wall thickness and the downstream finish.
Oxford Traceability can supply a standalone bench station, a hand-held marking head or a fully integrated automatic cell. Fixtures, part presence sensing, code data, vision reading, PLC control and operator protection are considered as one production system.
- Machined and cast metals
- Deep durable marks
- Curved or uneven parts
- Hand-held or fixed stations
- DataMatrix and text
- Harsh service conditions
Specify the complete process
What determines a successful system
The marking head is only one part of a repeatable production solution. These factors are defined before equipment is selected.
Material hardness
Stylus geometry, impact energy and marking speed are matched to aluminium, steel, stainless steel and other substrates.
Code geometry
Cell size, dot spacing, quiet zone and available marking area affect the DataMatrix size and its reading margin.
Noise and ergonomics
Enclosures, isolation and suitable loading height can control production noise and make manual stations comfortable to use.
Material and code trials
DataMatrix dot-peen marking on stainless steel
Stainless steel is among the materials considered for dot-peen marking, but the production component must be trialled. Material hardness, surface finish, wall thickness and part support affect the marking settings and the result.
Define the code content, cell size, dot spacing, quiet zone and available marking area together. Check the mark using the agreed lighting and reading method, and review any finishing operation that follows marking.
Reading the symbol, checking that its content is correct and grading its quality are separate checks. Agree which results are required for production acceptance before choosing the equipment.
Production applications
Configured around the component
From operator-loaded workstations to automated cells, the equipment is matched to the part flow and traceability requirement.
Castings and forgings
Permanent batch, heat, serial and DataMatrix identification on robust metal parts.
Discuss this applicationChassis and structures
Deep marks on frames, fabricated components and heavy engineering assemblies.
Discuss this applicationMachined components
Traceable identification linked to CNC, inspection and assembly records.
Discuss this applicationDefined quality, not guesswork
Mark quality engineered around the application
A successful dot peen marking system depends on more than producing a visible symbol. We match the marking process, surface preparation, illumination, optics and verification method to the part and the standard your customer requires.
Where specified, systems can be configured to evaluate direct marks using the current ISO/IEC 29158 methodology and to handle GS1 DataMatrix or customer-specific data structures.
- ISO/IEC 29158:2025Direct part mark symbol quality methodology
- ISO/IEC 16022:2024Data Matrix symbology specification
- GS1 DataMatrixApplication identifiers and structured data
- Customer standardsAutomotive, aerospace and engineering specifications
From samples to production
A controlled route to a working marking cell
We reduce application risk by proving the mark and defining the interfaces before the system reaches the production floor.
01
Review
Part, drawing, material, data, standard, cycle time and handling method.
02
Trial
Representative samples establish mark quality, process parameters and reading method.
03
Engineer
Marking, fixtures, guarding, controls, vision and production interfaces are detailed.
04
Commission
The complete system is tested, installed and handed over with agreed documentation.
Questions answered
Dot peen marking systems FAQs
Practical answers to common questions from production and engineering teams.
Dot peen, also called micro-percussion marking, moves a stylus across the marking field and impacts the surface to form controlled dots. Those dots create text, numbers, logos or a machine-readable 2D code.
Yes. Dot peen is commonly used for direct-part-marked DataMatrix codes. The dot shape, spacing, depth, quiet zone, surface and verification lighting all need to be considered together.
Correctly specified marking normally avoids unacceptable distortion, but thin walls and delicate parts require careful trials. We set impact energy and fixture support around the component geometry.
Electromagnetic systems offer clean installation and controlled impact over many applications. Pneumatic systems may suit deeper or harder-duty marking. The material, required depth, cycle and factory services determine the choice.
Yes. Hand-held heads can be useful for large, heavy or fixed assemblies. Location templates, part selection, cable management and operator ergonomics are important parts of the application review.
Talk to an applications engineer
Prove the mark on your component
Send a drawing, photograph or representative sample. We will review the material, marking area, content, cycle time and verification requirement.