dot peen marking machine

Pneumatic Dot Peen Marking Machine


Pneumatic marking machine, also known as dot peen marking machine or micro percussion marking machines,which are ideal for replacing a hand punching operation & has many advantages over many similar conventional processes.

The equipment can mark all metals such as Steel, Stainless Steel, Copper brass, Gold, Silver etc. Ideal for marking on hard plastics.

These machines mark permanent batch numbers, serial numbers, code scanned data, Data from PLC, Date Codes, Month Codes, Year Codes, etc.

  • Can mark in characters, Arabic numbers and any picture with harmonized and aesthetic effects.
  • Can mark on wide variety of products or signs made of steel, iron, copper, aluminum, plastic and other material.
  • No need to equip with computer, built-in programming system with industrial microcomputer and various USB ports.
dot peen marking machine
dot peen marking machine
  • Serial number automatically increasing or decreasing, VIN code, random code and 2D code, etc.
  • Marking depth from 0.02~1mm (adjustable) for various marking depth.
  • Very small force of marking pin has no influence on the mechanical property of work pieces.
  • Simple operation, easy maintenance.
  • Key factor is high impact frequency of marking head and fast marking speed making. It’s possible for mass production to customers’ satisfaction.
Type PH01/PH02/PH03/PH04
Marking area 150mm*50mm/120mm*40mm /80mm*20mm/50mm*20mm
Marking speed 30mm~40mm/s
Impact frequency 300 time/s
Repeated accuracy 0.001mm
Marking depth 0.1mm~0.2mm
Power supply AC100V~240V 50HZ/60HZ
Air Power 0.2MP~0.6MP
Marking content characters, number, all kinds of graphic, logo, dot matrix 2D codes, Barcode, Serial Number, circle letter and etc.
Integrated controller The controller integrates software, keyboard, screen, no need computer anymore.

 Pneumatic DOT Peen Marking Machine

With the development of CNC technology,the CNC marking machine has become the mainstream in the mass production process. There are main punched matrix,electrochemical corrosion, laser marking and pneumatic marking in the marking of industrial parts. The punched matrix has the advantages of fast speed and simple working process, but it has poor flexibility and insufficient marking depth. Electrochemical corrosion cmes with high accuracy and no damage the flatness of the work-piece, but it requires relatively high flatness of the work-piece surface.Moreover,It will produce shallow marking depth and other consumables. Laser marking comes with high precision, fast speed and good appearance, but it is relatively expensive and shallow marking depth. Pneumatic marking machine has the advantages of low cost, fast speed, high precision and depth adjustable. It has been widely used for metal parts marking.

What is a Pneumatic Marking Machine

Pneumatic Dot peen marking machine is a device that needles by compressed air driving to print,which can print a certain depth of numbers, letters, vector diagrams and other marks on various parts,components and signs. The advantage of pneumatic dot peen marking machine is to print marks on higher hardness metals.

The pneumatic marking machine system consists of four parts:computer system,drive control system(electrical cabinet, control circuit board, driver), pneumatic system(gas circuit, filter pressure regulator, high frequency valve) and marking workbench(industrial-grade X-Y scanning system, Z-direction lifting system, marking head, work table).

How does it Work?

The dot pin controlled by computer moves on a certain trajectory on the X and Y two-dimensional surface. At the same time,It makes a high-frequency impact on the surface of the material under the action of compressed air, thereby printing a mark with a certain depth.

Type of Pneumatic Marking Machine

There are two type of pneumatic marking machines,including:

Desktop pneumatic marking machine:It is suitable for marking signs, nameplates, and small workpieces (The height of work-piece is less than 500mm that is easy to move to the workbench) and so on.

Portable pneumatic dot peen marking machine: It is suitable for workpieces that are not easy to move to the worktable. It has the advantages of the desktop pneumatic marking machine and greatly improves to make up for the disadvantages of the desktop marking machine. It can be used with a laptop or a single-chip compute,therefore, more easy to operate, and easy to carry.

The Advantages of Pneumatic Marking Machine

  • Permanent mark
  • The depth of marking adjustable
  • Portable and easy to carry
  • Affordable price
  • Easily integrated in industrial production lines
  • Small marking head design ,strong and easy to install

What is Application Of Pneumatic Marking Machine

Marking number,name,trademark and production date etc on the engine, piston, frame, chassis, connecting rod,cylinder and other parts of vehicle.

Various mechanical parts, machine tools, hardware products, metal pipes, gears, pump bodies, valves, fasteners, steel materials, instruments and meters and other metal marking;

How to Install Pneumatic Marking Machine

Computer connection

If need computer,connect one end of the serial cable to the COM2 port of the computer, and the other end to the CZ1 port of the drive control circuit board.

Air system connection

Connect one end of  air pipe to the quick connector of the air source inlet on the back of the work table, and the other end to connect the special adapter to the air source.

Marking head installation

1 Remove the marking head cover and install it.

2 Check whether the working plane flatness.

3 Re-tighten all the screws,install the cover;

Power-on detection

1 Check the power supply, cables, and air pipe connections, and then turn on the power and air supply after confirming that they are right.

2 Manual test: Open the electrical cabinet, set the “Manual/Auto” key on the control panel to the “Manual” position, and operate the detect the X-Y scanning movement and the impact movement of the marking head;

How to Maintain Pneumatic Marking Machine

  • Keep the X and Y axis guide rods clean
  • Add 20# oil on the X, Y axis guide rod once a month.
  • Regularly check the tension of the X and Y axis timing belts (once every three months);
  • Regularly check whether the fastening blocks of the X and Y axis timing belts are loose (once every three months);
  • Keep the cylinder liner of the marking head clean, Not allow dust, iron filings, etc. to enter the cylinder or copper sleeve;
  • When the air source is connected,the filter pressure regulator will automatically drain, and it will return to normal after a few minutes. Check whether the filter pressure regulator work normally every six months;
  • No oil and debris are allowed on the travel switch;
  • Regularly check whether the pressure of compressed air is normal.


1. Why Is The Marking Not Clear By Pneumatic Marking Machine

The reason for the unclear marking is probably due to the low temperature of the machine. Before marking, preheat the machine for 15 minutes, and then perform marking.

If The marking dot peen is worn too much and should be replaced;

Adjust the distance between the dot peen and the marking work-piece;

Check whether the air pressure is reduced, and if there is oil or water in the air, let it go.

2. Why Pneumatic Marking Machine Cannot Work Normally

First check whether the various lines are connected correctly, and check whether the switch is turned on. Then check whether the intake pipe and the air pipe are connected correctly and the fuse and power supply system. Before turning on the machine, it is best to carefully check the condition of each component, in case the parts are loose due to long-term operation and cause connection problems.

3. Why Pneumatic Marking Machine Cannot Print Fonts

Check whether the control software work normally. Check the status of the font library, you can import the font according to you need.

4. Why Do The Last Few Marking Characters Overlap

Exceeded marking range,and adjust the starting point of the corresponding axis.

5. Why Only One Vertical Line Or One Horizontal Line Is Printed

Check whether the connection of the motor in this direction is normal;

Check whether the motor is normal.

Whether the drive in this direction is damaged.

6. Why The Marking Is Deformation And Misalignment

Whether the copper sleeve is worn too much, otherwise it should be replaced;

When the power is on, hold the marking head gently shaken in the X direction and Y direction to check if there is any looseness in each direction. If there is a gap, check whether the timing belt or pressure plate is too loose.

Check whether impurities on the slide bar of the workbench;

Check whether the electrical connection is loose.

7. What Is A Good Air Pressure Of The Pneumatic Marking Machine

Generally, the air pressure of the pneumatic marking machine is 0.3 to 0.6mpa. When we are marking aluminum signs, it is enough to adjust the air pressure of the pneumatic marking machine to about 0.3mpa.When marking steel and iron signs, It needs to be adjusted to 0.5mpa due to the hardness is much higher. When we are marking cylinders, oxygen cylinders, and liquefied gas cylinders, it must be adjusted to at least 0.6mpa, because the hardness of the cylinder is very high.

The air pressure of the pneumatic marking machine should be adjusted according to the required depth of the marking product and the hardness of the marking material. For example, if the marking material is particularly hard, the air pressure needs to be larger. The larger marking depth,the larger air pressure.but not the bigger the better. There are other configurations that will also affect the depth.