Airtac MARU Stainless Steel Mini Cylinder MARU25X85S
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU25X85S is a genuine double acting + cushion (up 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 (up mount)
- Rod threadM10×1.25
- CushionVariable air cushion, both ends
About the Airtac MARU Stainless Steel Mini Cylinder MARU25X85S
AirTAC rates the MARU25X85S at 245 N push and 206 N pull from its 25 mm bore at 0.5 MPa, cushioned by variable air needles at both ends of the 85 mm stroke. The U in the code means the front bracket points up - the mount is integral, not an accessory.
Around 12 kg of vertical lift is realistic once a 2:1 safety margin is applied to that 245 N figure. The rolling-packed stainless body stands up to damp, food-adjacent and outdoor air where painted minis fail, and switches such as CMSG or DMSG drop onto the standard magnet without a special piston order.
Airtac MARU Stainless Steel Mini Cylinder MARU25X85S Technical Specifications
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU25X85S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 85 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 MARU25X85S
| 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. |
| ×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 MARU Stainless Steel Mini Cylinder MARU25X85S Is Used
Pin insert press
Pressing dowel pins into housings on a small assembly press, where about 147 N of working force is the honest budget.
Bottle reject pusher
Sweeping off-spec bottles sideways off a filler conveyor, the cushion tuned so glass never cracks against the chute.
Chute gate control
Opening and closing a gravity chute gate in a humid warehouse, the stainless body resisting condensation year round.
Is the Airtac MARU Stainless Steel Mini Cylinder MARU25X85S the Right Cylinder?
If 245 N at 0.5 MPa is more than the job needs, the 20 mm size gives 157 N; if it falls short, step to the 32 mm bore and its 402 N. Both run the same 0.15-1.0 MPa (22-145 psi) supply and 30-800 mm/s speed range. Remember this is a cushioned work cylinder, not a holder - on air loss the rod drifts, so a separate rod lock is the fix for load retention. Strokes near 90 mm on a 10 mm rod keep side loads low; guide the load externally if the tooling overhangs.
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 MARU25X85S FAQ
Push 245 N and pull 206 N at 0.5 MPa; 343 N push at 0.7 MPa; 50 kgf maximum theoretical at 1.0 MPa. Port size is 1/8", rod thread M10x1.25, rod diameter 10 mm, speed range 30-800 mm/s.
The rolled stainless tube resists washdown, condensation and mild chemicals that pit aluminium barrels or peel paint on ordinary minis - a genuine edge in food, outdoor and coolant-heavy cells. Pair it with the standard magnet and a CMSG switch for position feedback.
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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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