Deep and Pneumatic Dot Peen Marking Machines
Need a mark deeper than 0.5 mm? Choose a pneumatic dot peen marker. Shop air drives the pin harder than an electric coil, so the dots go deeper and stay even. Our pneumatic models mark steel up to 1.0 mm deep. No compressor on site? The plug-in HS-PE01 reaches 0.8 mm.
- Up to 1.0 mm deep
- Handheld or benchtop
- Shop air 0.3–0.6 MPa
- Data Matrix, serials, text
By the HT Marker team
Which deep dot peen marker fits your work?
Short answer: the part stays put, use the handheld HS-PE01-P. The part comes to a bench, use the benchtop HS-DE01-P. Both reach 1.0 mm. HS-DP01 is the lower-cost benchtop option and runs from a computer. HS-PE01 is for sites with no air.
| Model | Type | Power | Depth | Marking area | Computer? | Price |
|---|---|---|---|---|---|---|
| HS-PE01-P | Handheld | Shop air | 0.05–1.0 mm | 140 × 60 mm | No, touchscreen controller | $ 2,500 |
| HS-DE01-P | Benchtop | Shop air | 0.05–1.0 mm | 160 × 100 mm | No, built-in touchscreen | $ 2,660 |
| HS-DP01 | Benchtop | Shop air | 0.05–0.8 mm | 120 × 80 mm | Yes | $ 1,850 |
| HS-PE01 | Handheld | Plug-in, no air | 0.05–0.8 mm | 140 × 60 mm | No | $ 2,160 |
Depth is a range, not a promise: harder steel gives a shallower mark. Prices include free shipping to the US and Canada; US orders include duties.
Deep marking models
How deep does your mark need to be?
Start from what happens to the part after marking. The deeper the coating or the harder the wear, the deeper the mark.
Hot-dip galvanizing
The American Galvanizers Association asks for marks at least 0.8 mm deep and 13 mm high (AGA). That needs HS-PE01-P or HS-DE01-P. Mark the bare steel before it goes to the galvanizer.
Paint and powder coat
Mark the bare metal, then coat it. The mark must stay deeper than the coating fills. Test one part through your real coating line and check it reads.
Wear, blasting and rough handling
Castings, forgings and tools get knocked, blasted and ground. A deeper mark keeps more of each dot after the surface wears.
Hardness matters too. Dot peen marks metal up to about HRC 60. Harder steel takes a shallower mark at the same setting. For a part going to the galvanizer, see our structural steel and casting marking guide.
Do you need a pneumatic dot peen marker?
Short answer: yes, if the mark must be deeper than 0.5 mm every time. Electric plug-in units are not reliable at that depth. The one exception is HS-PE01, which reaches 0.8 mm where there is no air.
| Pneumatic | Electric | |
|---|---|---|
| Depth | Up to 1.0 mm (HS-PE01-P, HS-DE01-P) | Most models 0.05–0.5 mm; HS-PE01 to 0.8 mm |
| You need | A compressor with dry air at about 0.3–0.6 MPa (3–6 bar) | A power outlet or a charged battery |
| Best for | Galvanized steel, castings, heavy wear, shops that already run air | Yards and sites with no air, marks up to 0.5 mm |
| Watch out for | Wet air makes the pin misfire. Drain the tank daily and fit a filter or dryer | Reaching past 0.5 mm reliably |
Choosing a handheld model for frames, beams or pipe? Compare plug-in, battery and pneumatic on our portable dot peen marking machines page.
Four things that decide how deep the mark goes
Hold the part still
A part that moves soaks up the impact. Clamp it in a vise or fixture on a benchtop model. On a handheld, keep the head flat and let the magnets hold it on steel.
Set force, then test
More force gives a deeper dot. Mark a scrap of the same metal first and check the depth before you run real parts.
Allow more time
Our markers do about 1–3 characters a second at 2 mm character height. Deeper and taller characters take longer, so time a test with your real text.
Data Matrix codes
Dot peen marks Data Matrix codes. A deeper dot is not always easier to scan: check dot size and spacing, and scan the finished part.
Deep dot peen questions
How deep can a dot peen marking machine mark?
Up to 1.0 mm in steel with our pneumatic HS-PE01-P and HS-DE01-P. HS-DP01 and the electric HS-PE01 reach 0.8 mm. Most other electric and battery models mark 0.05–0.5 mm. Harder steel takes a shallower mark.
What air supply does a pneumatic dot peen marker need?
A shop compressor giving dry air at about 0.3–0.6 MPa (3–6 bar). Drain the tank daily and fit a filter or dryer, because wet air makes the pin misfire.
Is a dot peen mark deep enough for hot-dip galvanizing?
Yes, at about 0.8 mm deep and 13 mm high, as the American Galvanizers Association advises. Use HS-PE01-P or HS-DE01-P and mark the bare steel first.
Can it mark hardened steel?
Up to about HRC 60. The harder the steel, the shallower the mark. Test on a scrap piece of the same steel.
Which deep marker costs less?
Can a deep dot peen marker mark a Data Matrix code?
Yes. Keep the code inside the marking window and scan it on the finished part, after painting or coating.
When is a fiber laser the better choice?
For small, sharp codes and logos, thin parts that a pin could dent, and parts that are already painted. Dot peen is better when the mark must survive paint, galvanizing or heavy wear. See all dot peen marking machines for the full range.
Tell us about your part
The metal, the depth you need, the text or code, and what happens to the part after marking (paint, galvanizing, blasting). We confirm the model and settings. Bulk orders, custom fixtures and other countries welcome.