ATEX pneumatic drives for mining applications
We manufacture explosion-proof pneumatic actuators in ATEX design for operation in underground mines: ISO 6431 and CNOMO pneumatic actuators, as well as long-stroke pneumatic piston plungers. From catalogue products to custom-engineered designs tailored to specific applications.
ATEX actuators - what are they used for?
A pneumatic actuator converts compressed air energy into linear motion. It drives, locks, presses and moves machine elements. In mining, it must also meet the requirements of the ATEX Directive because it operates in methane or coal dust explosion hazard zones, in dust, moisture and intensive operating cycles.
A pneumatic piston plunger is also an actuator. It has a special extended design and is used for moving mine cars on tracks in underground mines. All our mining actuators are certified under the ATEX quality system by KOMAG. Details are described on the page about pneumatics for the mining industry.
ATEX actuator series
| Type | Diameters | Pressure / stroke | Series | Category |
|---|---|---|---|---|
| ISO 6431 pneumatic actuators | D32-D320 | up to 1.0 MPa, standard stroke 5-500 mm | SSIG | M2 |
| CNOMO pneumatic actuators | D32-D200 | up to 1.0 MPa, standard stroke 5-500 mm | SCNG | M2 |
| Pneumatic piston plungers | D140-D200 | up to 1.0 MPa, stroke according to customer requirements | - | M2 |
ISO 6431 pneumatic actuators (SSIG series)
Double-acting actuators compliant with ISO 6431, diameters D32-D320, working pressure up to 1.0 MPa, standard strokes 5-500 mm, with longer strokes available after consultation. Available with single-sided piston rod (G16) or double-sided piston rod (G17).
- aluminium alloy piston, TARFLEN plastic guide ring with graphite additive, ŁS1 sintered bronze guide sleeve,
- seals: PU polyurethane, VITON (FKM/FPM); “O” type sealing rings made of NBR or VITON,
- connection threads G1/8-G1, depending on actuator diameter.
The order number is built from the actuator variety code (G16/G17), diameter code (E32 ... R320), stroke, sleeve type and material design markings - for example, ISO 6431 D63x250 actuator with chrome-plated sleeve: 12.G16H.0250C.
CNOMO pneumatic actuators (SCNG series)
Double-acting actuators in the CNOMO standard, diameters D32-D200, working pressure up to 1.0 MPa, standard strokes 5-500 mm. The same material class and special designs as in the ISO series, for installation compliant with the CNOMO standard. Variety code G01 for single-sided piston rod or G02 for double-sided piston rod - for example, CNOMO D63x250 actuator: 12.G01H.0250.
Pneumatic piston plungers
A pneumatic piston plunger is an extended actuator adapted for operation in methane explosion hazard zones, Group I, Category M2. It is used for moving mine cars on tracks in underground mines.
| Parameter | Value |
|---|---|
| Diameter range | D140, D150, D160, D200 |
| Maximum working pressure | 1.0 MPa |
| Stroke | according to customer requirements (projects over 6000 mm) |
| Operating temperature range | 20-80 °C |
| Piston rod | carbon steel with chrome-plated external surface |
| Covers, piston, sleeve | carbon steel |
| Seals | PU polyurethane |
With long strokes, precise guidance, system rigidity and proper selection of seals and materials for long-term operation are critical. Mounting dimensions and order numbers are agreed individually.
Material and special designs
Standard design
Carbon steel piston rod with chrome-plated surface, steel covers and sleeve with anti-corrosion coating.
Acid-resistant design
Piston rod, bolts and nuts made of acid-resistant steel; sleeve and covers made of acid-resistant steel - for aggressive environments.
Chrome-nickel coated piston rod
Micro-alloyed piston rod with chrome-nickel coating for increased corrosion and wear resistance.
Design modifications
Extended piston rod for a piston rod cover, stronger magnet for sensors, VITON seals, fork ends and yokes.
Custom projects - tailor-made actuators
We specialise in actuators adapted to specific applications.
| Project / customer | Scope | Component / type |
|---|---|---|
| One of the largest coal mines in Poland | Actuator for an exceptionally demanding environment, full functional testing and quality control | Actuator Ø200, stroke 4700 mm |
| Hard coal mine | Actuator for a pneumatic piston plunger - moving mine cars on tracks, long stroke with reliable guidance | Actuator Ø140, stroke 8000 mm |
| Coal mining operation | Actuators for an explosive atmosphere zone and a repair kit for a piston plunger | D160x200, D250x400 with fork ends, D200x500 with yoke; piston plunger D150x7100 |
| Copper ore mining operation | Special actuator with chrome-nickel coated piston rod and VITON seals | Special actuator D160x1600 |
How to order an ATEX actuator?
- Type and standard ISO 6431 (SSIG), CNOMO (SCNG) or pneumatic piston plunger.
- Diameter and stroke Piston diameter and stroke length. For piston plungers, the stroke is selected individually.
- Pressure and medium Supply parameters, lubricated or non-lubricated operation.
- Material design Standard, acid-resistant, chrome-nickel coated piston rod, VITON seals.
- Mounting and installation Fork ends, yoke, mounting method and guidance for long strokes.
- Data for quotation Drawing, sample or reference number - we will prepare documentation and assign a catalogue number.
Why choose CPP PREMA ATEX actuators?
KOMAG ATEX certificate
Actuators certified by the KOMAG Institute of Mining Technology in accordance with ATEX Directive 2014/34/EU, Group I, Category M2.
Long-stroke designs
We manufacture piston plungers and actuators with strokes exceeding 6000 mm - with reliable guidance and system rigidity.
Special designs
Acid-resistant, chrome-nickel coated versions with additional protection and mounting options - adapted to the application.
Manufacturer since 1976
The largest Polish manufacturer of pneumatics, ISO 9001:2015 certified by TÜV, repair kits and maintenance support.
FAQ - ATEX actuators
Is a pneumatic piston plunger an actuator?
Yes. A pneumatic piston plunger is an extended pneumatic actuator adapted for moving mine cars on tracks in underground mines and for operation in an explosion hazard zone, Category M2.
What diameters and strokes are available?
ISO 6431 actuators are available in diameters D32-D320, CNOMO actuators in D32-D200, and piston plungers in D140-D200. Standard strokes are 5-500 mm; for piston plungers and custom designs, the stroke is selected according to customer requirements, including projects over 6000 mm.
Do you manufacture acid-resistant actuators?
Yes. Acid-resistant designs, chrome-nickel coated piston rods and VITON seals are available for aggressive and demanding environments.
What is the maximum working pressure?
ISO and CNOMO actuators, as well as piston plungers, operate at pressures up to 1.0 MPa, using filtered, lubricated or non-lubricated compressed air.
How is the order number structured?
It consists of the variety code for single-sided or double-sided piston rod, diameter code, stroke, sleeve type and material design markings - for example, D63x250 with chrome-plated sleeve: 12.G16H.0250C for ISO or 12.G01H.0250 for CNOMO.
Do you have an ATEX certificate?
Yes. The actuators are certified by the KOMAG Institute of Mining Technology, Notified Body No. 1456, in accordance with ATEX Directive 2014/34/EU. The company operates under the ISO 9001:2015 quality management system certified by TÜV.
Ask about ATEX actuators
Do you need an ISO, CNOMO or pneumatic piston plunger actuator in ATEX design? Describe the diameter, stroke, pressure, material design and mounting method. CPP PREMA will select a product or design a custom solution.