Airtac MARF Stainless Steel Mini Air Cylinder MARF25X220S
The AirTAC Airtac MARF Stainless Steel Mini Air Cylinder MARF25X220S is a genuine double acting + cushion (front mount) standard round-body mini air cylinder with a Ø25mm bore and 220mm 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
- Stroke220 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 MARF25X220S
Longer travel, same slim footprint: the MARF25X220S stretches a 25 mm bore across 220 mm of double-acting stroke, with needle-screw cushions at each end to tune the stop. The integrated front-flange mount carries loads straight into the frame - no loose foot bracket to align. Rated push is 245.3 N at 0.5 MPa and 343.4 N at 0.7 MPa; operating window 0.15-1.0 MPa (22-145 psi), 30-800 mm/s.
Plan the load below the rating: around 147 N of dependable working force at 0.5 MPa, equivalent to lifting about 25 kg vertically, or 12.5 kg with a comfortable 2:1 margin. A high-precision stainless tube rolled onto aluminium covers, plus a 20 um hard-chrome rod, resists the corrosion that kills painted minis in food plants and humid shops, while the standard magnet accepts CMSG / DMSG / EMSG switches out of the box.
Airtac MARF Stainless Steel Mini Air Cylinder MARF25X220S Technical Specifications
| Model | Airtac MARF Stainless Steel Mini Air Cylinder MARF25X220S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 220 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 MARF25X220S
| 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. |
| ×220 | 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 MARF25X220S Is Used
Sprue runner kicker
After mould open, 245.3 N at 0.5 MPa knocks sprue runners clear of a small injection press; the variable cushion ends the 220 mm snap without a bang.
Bakery tray indexer
Indexing tray conveyors one pitch per cycle in a bakehouse, where flour dust and humidity meet the riveted stainless barrel without complaint.
Car-wash brush arm
Extending a foam-brush arm across a car body between passes; a 220 mm stroke lets one cylinder serve both travel lanes of the tunnel wash.
Is the Airtac MARF Stainless Steel Mini Air Cylinder MARF25X220S the Right Cylinder?
If 245.3 N at 0.5 MPa feels tight, step up to the 32 mm bore (402.2 N); if generous, the 20 mm bore's 157.0 N saves air. This cylinder has no way of parking the rod by itself - air gone, motion resumes - so spec a rod lock for fail-safe stops. Mounting and sensing are built in (front flange plus piston magnet for CMSG / DMSG / EMSG), and at 220 mm of travel let external guides, not the rod, absorb side thrust.
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 MARF25X220S FAQ
The 25 mm bore gives 245.3 N push / 206.1 N pull at 0.5 MPa and 343.4 N push / 288.5 N pull at 0.7 MPa, with a 50 kgf theoretical maximum at 1.0 MPa. Air ports are 1/8" and the 10 mm rod ends in an M10x1.25 thread.
Yes - a high-precision stainless steel tube with rolled-on aluminium covers, plus a 20 um hard-chrome plated carbon-steel rod. In a 220 mm long-stroke duty inside a humid or washdown plant, that combination resists the pitting that ends the life of painted mini cylinders.
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