Airtac MARU Stainless Steel Mini Cylinder MARU25X70S
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU25X70S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø25mm bore and 70mm 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
- Stroke70 mm
- Port size1/8"
- Acting typeDouble acting + cushion (up mount)
- Rod threadM10×1.25
- CushionVariable air cushion, both ends
About the Airtac MARU Stainless Steel Mini Cylinder MARU25X70S
Seventy millimetres of travel from a riveted stainless sleeve: the MARU25X70S keeps the classic round-body MA layout - barrel, aluminium covers and stainless block rolled into one sealed unit - with the up (U) bracket already on the front cover. Double acting with adjustable air cushion at both ends, it puts out 245.3 N pushing and 206.1 N pulling at 0.5 MPa on a 0.15-1.0 MPa (22-145 psi) supply, 30-800 mm/s.
Work to about 147 N continuous at 0.5 MPa and the 10 mm chrome rod will hoist near 12.5 kg vertically with margin to spare. The magnet comes fitted, so CMSG / DMSG / EMSG switches mount on day one, and the stainless barrel tolerates washdown that would rust a painted-steel mini.
Airtac MARU Stainless Steel Mini Cylinder MARU25X70S Technical Specifications
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU25X70S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 70 mm |
| Acting type | Double acting + cushion (up 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 MARU Stainless Steel Mini Cylinder MARU25X70S
| MAR | Standard round-body mini cylinder (double-acting, integrated mount, variable cushion). |
|---|---|
| U | Front-cover mount: U = up (top) mounting. |
| 25 | Bore size in mm. |
| ×70 | 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 MARU Stainless Steel Mini Cylinder MARU25X70S Is Used
Belt divert pusher
Nudges cartons across a divert point on a belt conveyor; the end cushions keep the 70 mm stroke quiet at line speed.
Rotary index pin
Plunges a locking pin through a deep hub on a welding rotary table, 245.3 N at 0.5 MPa seating it firmly.
Pop-up roller lift
Raises a 10 kg roller segment vertically in a sortation module, comfortably inside the 12.5 kg lift figure.
Is the Airtac MARU Stainless Steel Mini Cylinder MARU25X70S the Right Cylinder?
Compare thrust before you commit: a 20 mm MAR makes 157.0 N at 0.5 MPa, this 25 mm bore 245.3 N, and the next size up at 32 mm reaches 402.2 N. With 70 mm of exposed rod, guide the load or add a stop plate whenever the push is off-axis; knuckles I and Y thread onto the M10x1.25 rod end. Note the cylinder is not a brake - without air the piston simply drifts, so specify a rod-lock unit where secure holding matters.
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 MARU Stainless Steel Mini Cylinder MARU25X70S 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; 50 kgf theoretical maximum at 1.0 MPa. Supply 0.15-1.0 MPa (22-145 psi) of 40 um filtered air, speed range 30-800 mm/s.
Yes. Needle screws at each end meter the exhaust and soften the final millimetres of the 70 mm stroke, so you can run faster or carry heavier loads without shock loading the covers. Set them on first run-up.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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