Dot Peen Marking Machine

A dot peen marking machine (pin stamp) is an automated device that uses a pneumatically or electrically driven stylus to indent a series of small dots into a surface, forming characters, logos, or codes
It is a form of mechanical engraving. The dot matrix pattern creates permanent markings on metal or hard plastic parts.

Type of Dot Peen Marking Machine

Benchtop/Stationary Markers: Table-mounted machines for marking smaller parts in one fixed location.

In-line/Integrated Systems: Markers integrated into production lines for automotive stamping, aerospace parts, etc., often with robotic feeders.

Portable/Handheld Units: Less common; some small dot-peen heads can be hand-held on large
structures (bridges, heavy equipment).

Applications in Various Industries

Used for industrial traceability and identification. Common in aerospace, automotive, and electronics to mark serial numbers, barcodes or Data Matrix codes on metal parts. Because the marking is deep and durable, it survives extreme conditions (heat, abrasion). In India, dot-peen is used for marking machine tools, dies, oil field equipment, and any part needing legible, permanent ID.

Material Selection Considerations

The marking pin is usually tungsten carbide for hardness. The machine frame is heavy steel to absorb impact. Surfaces to be marked must be rigidly clamped (fixtures of steel or cast iron). Air lines (for pneumatic systems) use oil-free compressors. The electronics must handle industrial environments (dustproof casing). Since marking is low-stress on parts, there’s little concern for material compatibility (works on any hard substrate).