Airtac MARF Stainless Steel Mini Air Cylinder MARF25X25S
The AirTAC Airtac MARF Stainless Steel Mini Air Cylinder MARF25X25S is a genuine double acting + cushion (front mount) standard round-body mini air cylinder with a Ø25mm bore and 25mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service. A variable air cushion at both ends lets you tune end-of-stroke deceleration on site.
- BoreØ25 mm
- Stroke25 mm
- Port size1/8"
- Acting typeDouble acting + cushion (front mount)
- Rod threadM10×1.25
- CushionVariable air cushion, both ends
About the Airtac MARF Stainless Steel Mini Air Cylinder MARF25X25S
Short, precise movements are what the MARF25X25S does best: 25 mm of stroke on a 25 mm bore, front flange mount and AirTAC's riveted round-barrel construction. It is double acting with variable cushions at both ends, delivering 245 N of push and 206 N of pull at 0.5 MPa.
The stainless tube and hard-chrome rod stand up to coolant mist and washdown that corrode painted mini cylinders quickly. Keep continuous work near 147 N of the 245 N rating - roughly a 12 kg vertical lift with a 2:1 margin - and use the standard-fit piston magnet with CMSG, DMSG or EMSG switches to confirm the short 25 mm move actually completed.
Airtac MARF Stainless Steel Mini Air Cylinder MARF25X25S Technical Specifications
| Model | Airtac MARF Stainless Steel Mini Air Cylinder MARF25X25S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 25 mm |
| Acting type | Double acting + cushion (front mount) |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Variable air cushion, both ends |
| Max standard stroke | Up to 500 mm |
Specifications follow the official AirTAC MA-series datasheet. Barrel: stainless-steel tube (round-body, riveted rolling-packed construction); piston rod: carbon steel with 20µm hard-chrome plating; covers: aluminium alloy. Thread options: PT (blank) / G / NPT. Every MA-series cylinder ships with a built-in magnet for CMSG / DMSG / EMSG position sensors.
Theoretical Output Force (Ø25mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | 289 N |
| Max (@1.0 MPa) | 50 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MARF Stainless Steel Mini Air Cylinder MARF25X25S
| MAR | Standard round-body mini cylinder (double-acting, integrated mount, variable cushion). |
|---|---|
| F | Front-cover mount: F = front-flange mounting. |
| 25 | Bore size in mm. |
| ×25 | Stroke length in mm. |
| -S | Built-in magnet for CMSG / DMSG / EMSG sensors (standard on MA series). |
MA-family variants: MA / MAC (double acting ±cushion), MSA / MTA (single acting push / pull), MAD / MACD (double rod ±cushion), MAJ / MACJ (adjustable stroke ±cushion), MAR (cushioned with integrated F/U mount). Mounting accessories: FA flange, LB foot, SDB pivot; plus I and Y knuckles. Thread PT (blank) / G / NPT.
Where the Airtac MARF Stainless Steel Mini Air Cylinder MARF25X25S Is Used
Drill jig clamp pin
Locks aluminium workpieces into a drilling jig with a 25 mm clamp throw; the front flange pulls the cylinder tight against the jig plate with four screws.
Indexing table stop
Acts as the stop pin on a rotary indexing assembly table, confirming each of the eight stations through a CMSG switch read from the built-in piston magnet.
PCB glue dot press
Lowers a dispensing nozzle onto circuit boards for glue dots; the end cushions stop the head bottoming out cycle after cycle on the SMT line.
Is the Airtac MARF Stainless Steel Mini Air Cylinder MARF25X25S the Right Cylinder?
For a 25 mm throw, check whether the 20 mm MAR at 157 N push already does the job; move to the 32 mm MAR at 402 N when clamping forces climb. This bore's 245 N push and 206 N pull give comfortable headroom for pin and clamp duty at 0.5 MPa. Short strokes like 25 mm rarely stress the rod, but keep the front flange face square to the load so the 10 mm chrome rod is not driven sideways. With no air the piston sits wherever it stopped - it is not a holding device, so use a rod lock if the clamp must stay shut through a pressure drop.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) is standard for sensors
- ✓ Back cover (CA/U/CM) & mount (FA/LB/SDB)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Do not dismantle the riveted front/back covers.
- check On first run, back off the cushion screws and release gradually.
- check Installation by qualified personnel per AirTAC docs.
Airtac MARF Stainless Steel Mini Air Cylinder MARF25X25S FAQ
Push is 245.3 N and pull 206.1 N at 0.5 MPa, rising to 343.4 N push at 0.7 MPa; theoretical maximum is 50 kgf at 1.0 MPa. Supply 0.15-1.0 MPa (22-145 psi), proof tested to 1.5 MPa (215 psi), speed 30-800 mm/s. Air ports are 1/8-inch and the 10 mm rod threads M10x1.25.
Yes - the barrel is a stainless steel tube rolled onto aluminium covers with a stainless block, and the 10 mm rod carries 20 um of hard chrome. That combination resists splash, mist and humid air in food and packaging areas far better than painted mini cylinders, though it is not a certified sanitary fitting.
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Covers non-human-caused product damage.
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