Airtac MARU Stainless Steel Mini Cylinder MARU25X55S
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU25X55S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø25mm bore and 55mm 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
- Stroke55 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 MARU25X55S
Where a 50 mm throw leaves the part half-clear, the MARU25X55S adds five more millimetres without growing the footprint. AirTAC builds this MA-series mini as a rolling-packed assembly: a stainless-steel barrel rolled onto aluminium covers with a stainless block, sealing reliably along the whole tube. Double acting, cushioned variably at both ends, mounted via its own U front bracket, and magnet-equipped from the factory for CMSG, DMSG or EMSG switches.
Force figures land in the 50 kgf class: 245.3 N push and 206.1 N pull at 0.5 MPa, lifting to 343.4 N push at 0.7 MPa. Derate for real life - roughly 147 N of honest working push, enough to hoist a 12.5 kg part vertically at a 2:1 margin. Cycle anywhere from 30-800 mm/s with air at 0.15-1.0 MPa (22-145 psi) and 40 um filtration.
Airtac MARU Stainless Steel Mini Cylinder MARU25X55S Technical Specifications
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU25X55S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 55 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 MARU25X55S
| 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. |
| ×55 | 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 MARU25X55S Is Used
Indexing a slide in a small machining cell
Fifty-five millimetres steps a vise-mounted part between drill positions; 245.3 N push at 0.5 MPa seats it against a hard stop every cycle.
Tray diverter on a bakery line
The stainless barrel and chrome rod stand up to flour dust and washdown, swinging trays off a conveyor at up to 800 mm/s without paint to flake into food.
Sample pusher in a lab autosampler
A short 55 mm advance presents vials under the probe; the dual cushions stop the 10 mm rod without jarring fragile glassware.
Is the Airtac MARU Stainless Steel Mini Cylinder MARU25X55S the Right Cylinder?
Bore neighbours: a 20 mm MAR gives 157 N push at 0.5 MPa and a 32 mm gives 402.2 N - choose the 25 mm when your load sits between. Its 55 mm stroke is a standard catalogue build, no custom order needed. Air loss means drift: this barrel will not park the rod, so fit a rod lock if the position must survive a pressure drop. Mounting is already on the front cover (U = up/top), I and Y knuckles fit the M10x1.25 thread, and the built-in magnet suits immediate CMSG sensor use.
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 MARU25X55S FAQ
At 0.5 MPa: 245.3 N push, 206.1 N pull. At 0.7 MPa: 343.4 N push, 288.5 N pull. Theoretical ceiling: 50 kgf. Operating window: 0.15-1.0 MPa (22-145 psi), -20 to +70 C, 30-800 mm/s, proof 1.5 MPa (215 psi). Bore 25 mm, stroke 55 mm, 10 mm rod threaded M10x1.25, air ports 1/8".
No - every MA-series cylinder, the MARU25X55S included, leaves the factory with the piston magnet fitted. Snap a CMSG, DMSG or EMSG reed or solid-state switch onto the stainless barrel anywhere along the 55 mm travel and it reads end positions or mid-stroke stops without special-ordering a sensed version.
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