Airtac MARF Stainless Steel Mini Air Cylinder MARF25X300S
The AirTAC Airtac MARF Stainless Steel Mini Air Cylinder MARF25X300S is a genuine double acting + cushion (front mount) standard round-body mini air cylinder with a Ø25mm bore and 300mm 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
- Stroke300 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 MARF25X300S
Need a long reach in a slim round body? MARF25X300S covers 300 mm of travel at a 25 mm bore, double acting with a variable air cushion at both ends and a front-flange bracket rolled directly into the front cover. It bolts flat to the machine wall - no separate flange plate or foot bracket to buy.
At 0.5 MPa the bore pushes 245 N, which works out to lifting roughly 12 kg vertically once you halve the rating for a 2:1 safety margin. The stainless barrel and hard-chrome plated 10 mm rod take mild corrosion and washdown in stride, outlasting painted or bare-aluminium minis in damp corners, and the built-in magnet - standard on every MAR - lets CMSG, DMSG or EMSG switches read position anywhere along the stroke.
Airtac MARF Stainless Steel Mini Air Cylinder MARF25X300S Technical Specifications
| Model | Airtac MARF Stainless Steel Mini Air Cylinder MARF25X300S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 300 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 MARF25X300S
| 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. |
| ×300 | 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 MARF25X300S Is Used
Case drop-gate elevator
Lowering a light chute gate on a packaging line: with the 245 N push de-rated for a 2:1 margin, the cylinder handles a 12 kg gate over the full 300 mm drop.
Diverter push-off arm
Sweeps cartons off a belt into a sorting lane; the front flange bolts to the side frame and the variable cushion stops the arm without a bang at each end.
Sample tray presenter
Feeds a lab tray rack 300 mm into an analyser, with an EMSG switch confirming the in and home positions through the standard magnet.
Is the Airtac MARF Stainless Steel Mini Air Cylinder MARF25X300S the Right Cylinder?
Size check: the 20 mm MAR bore gives 157 N push at 0.5 MPa if the load is light, while the 32 mm bore lifts output to 402 N if 245 N feels marginal. With 300 mm of exposed 10 mm rod, keep side loads off the shaft and guide the load on external rails, or the rod will bend under lateral force. The cylinder holds no position on air loss - the piston simply drifts, since the cushion only softens the ends - so add a rod lock where a failsafe stop matters. The front flange and magnet are already fitted; matching sensor models are CMSG, DMSG and EMSG.
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 MARF25X300S FAQ
At 0.5 MPa it pushes with 245.3 N and pulls with 206.1 N; at 0.7 MPa the figures rise to 343.4 N push and 288.5 N pull. The theoretical ceiling is 50 kgf at 1.0 MPa. Stroke is 300 mm on a 10 mm hard-chrome rod with a 1/8 in air port, running 30-800 mm/s.
It is integral - the F front bracket is part of the cylinder's rolled cover, so you bolt straight onto a flat machine face with no separate flange accessory. I and Y rod knuckles still thread onto the M10x1.25 rod end.
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