Airtac MARF Stainless Steel Mini Air Cylinder MARF25X85S
The AirTAC Airtac MARF Stainless Steel Mini Air Cylinder MARF25X85S is a genuine double acting + cushion (front mount) standard round-body mini air cylinder with a Ø25mm bore and 85mm 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
- Stroke85 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 MARF25X85S
AirTAC's flange-front take on the MA round mini, the MARF25X85S delivers 85 mm of stroke from a 25 mm bore that pushes 245.3 N at 0.5 MPa. Supply spans 0.15-1.0 MPa (22-145 psi), speed 30-800 mm/s, temperature -20 to +70 C.
Riveted construction seals a stainless barrel to aluminium covers, an arrangement that copes with damp food-plant air where painted minis rust. Every unit ships magnet-equipped for CMSG / DMSG / EMSG feedback, and the piston's two-way seal stores its own grease between services. Size continuous work against about 147 N, or a 12 kg vertical lift with a 2:1 margin.
Airtac MARF Stainless Steel Mini Air Cylinder MARF25X85S Technical Specifications
| Model | Airtac MARF Stainless Steel Mini Air Cylinder MARF25X85S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 85 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 MARF25X85S
| 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. |
| ×85 | 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 MARF25X85S Is Used
Sachet feed pusher
Advances filled sachets into a crimp station on a tea-bag line, the flange bolting straight to the chute wall.
Drill-slide feed
Feeds a small drilling slide 85 mm into aluminium housings at up to 800 mm/s, with cushioned stops at both ends.
Locating pin lift
Raises a 12 kg locating-pin block on an assembly bench, sized with a 2:1 vertical margin against the bore's capability.
Is the Airtac MARF Stainless Steel Mini Air Cylinder MARF25X85S the Right Cylinder?
Bore sizing check: 20 mm offers 157.0 N at 0.5 MPa, this 25 mm reaches 245.3 N, and 32 mm jumps to 402.2 N - so the 25 mm class fits light clamps and small lifts. It will sag the moment air pressure drops, so plan a rod lock for any hold-in-place duty.
The front flange plus M10x1.25 rod thread accept I or Y knuckle joints, and the standard magnet pairs with CMSG or EMSG switches; the 85 mm stroke tolerates modest misalignment but not deliberate side loading.
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 MARF25X85S FAQ
Push 245.3 N and pull 206.1 N at 0.5 MPa; push 343.4 N and pull 288.5 N at 0.7 MPa; theoretical maximum 50 kgf at 1.0 MPa. Operating range 0.15-1.0 MPa (22-145 psi), speed 30-800 mm/s, 1/8" ports, M10x1.25 rod thread.
It will not. This is a plain double-acting cylinder, so the piston settles whenever pressure drops - the cushion only softens the final part of travel. For suspended or clamped loads that must stay put, pair it with a rod lock or a locking-valve circuit.
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Covers non-human-caused product damage.
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