Airtac MARF Stainless Steel Mini Air Cylinder MARF25X80S
The AirTAC Airtac MARF Stainless Steel Mini Air Cylinder MARF25X80S is a genuine double acting + cushion (front mount) standard round-body mini air cylinder with a Ø25mm bore and 80mm 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
- Stroke80 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 MARF25X80S
Shorter than a separate flange-and-cylinder stack, the MARF25X80S carries its front flange as part of the rolled body. The 25 mm bore generates 245.3 N pushing and 206.1 N pulling at 0.5 MPa, climbing to 343.4 N at 0.7 MPa.
Both stroke ends carry a variable air cushion, so faster cycles can land without hammering the aluminium covers. In practice plan on about 147 N of steady working force, or a vertical lift of roughly 12 kg with a 2:1 margin. Proof pressure is 1.5 MPa (215 psi).
Airtac MARF Stainless Steel Mini Air Cylinder MARF25X80S Technical Specifications
| Model | Airtac MARF Stainless Steel Mini Air Cylinder MARF25X80S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 80 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 MARF25X80S
| 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. |
| ×80 | 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 MARF25X80S Is Used
Pick-line carton ejector
Kicks lightweight cartons off a picking conveyor into a tote, with 80 mm covering the push-off travel neatly.
Trim press knock-out
Ejects finished rubber grommets from a low-tonnage trim die, with cushioning sparing the ejector plate at impact.
Presence check station
Works with a CMSG switch to confirm 80 mm of probe travel on automotive harness clips before the part is released.
Is the Airtac MARF Stainless Steel Mini Air Cylinder MARF25X80S the Right Cylinder?
If 157.0 N from a 20 mm bore feels thin and 402.2 N from a 32 mm feels oversized, this 25 mm flange cylinder landing at 245.3 N push and 206.1 N pull at 0.5 MPa is the middle choice. Match the built-in magnet to CMSG, DMSG or EMSG switches for end-of-stroke signalling.
On an 80 mm stroke, keep side forces off the 10 mm rod - use external guides for camming or lateral work.
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 MARF25X80S FAQ
Count on 245.3 N pushing and 206.1 N pulling at 0.5 MPa. At 0.7 MPa the numbers become 343.4 N and 288.5 N, and the theoretical peak is 50 kgf at 1.0 MPa. Both stroke ends carry a variable cushion you adjust with the needle screws on first run.
Yes, within limits. The barrel is stainless steel, the 10 mm rod is hard-chrome plated to 20 um, and the aluminium covers are rolled on, so splash and humid air cause far less trouble than on painted-steel minis. Avoid aggressive caustics and confirm media compatibility from the datasheet.
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