Airtac MARU Stainless Steel Mini Cylinder MARU25X140S
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU25X140S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø25mm bore and 140mm 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
- Stroke140 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 MARU25X140S
Wet, splashy or outdoor stations are where the MARU25X140S earns its keep: the 25 mm barrel is stainless steel rather than painted tube, and the carbon-steel rod carries a 20 um hard-chrome plate that resists corrosion through repeated washdowns. This 140 mm stroke version is double acting with a variable cushion at each end and an up/top front bracket integrated into the body.
Output at 0.5 MPa is 245.3 N of push; expressed as a lift figure, the bore moves roughly 25 kgf raw, so with a 2:1 margin plan on about 12 kg of vertical load. Signalling is ready from the box - the piston magnet is standard fitment, so CMSG, DMSG and EMSG switches mount on the barrel with no special-order piston. Prove pressure is 1.5 MPa (215 psi) against a 0.15-1.0 MPa (22-145 psi) working band.
Airtac MARU Stainless Steel Mini Cylinder MARU25X140S Technical Specifications
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU25X140S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 140 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 MARU25X140S
| 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. |
| ×140 | 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 MARU25X140S Is Used
Carton flap tucker
Folds the last flap on e-commerce cartons at a case packer; the stainless barrel tolerates the humid glue-section air that pits painted cylinders.
Conveyor diverter arm
Swings packages onto a reject spur on a distribution conveyor, using 245 N at 0.5 MPa across the 140 mm throw.
Sample rack indexer
Advances sample racks one position at a time in a lab automation enclosure, with an EMSG switch confirming each step through the standard magnet.
Is the Airtac MARU Stainless Steel Mini Cylinder MARU25X140S the Right Cylinder?
Benchmark against neighbours: 20 mm bore yields 157.0 N at 0.5 MPa and 32 mm bore yields 402.2 N, placing this 25 mm, 140 mm model in the mid-range for clamps, kickers and small presses between those forces. Over 140 mm of travel, minimise side load on the rod - a Guide or external slide keeps the 10 mm rod straight through thousands of cycles.
Position is not held if air fails; the piston moves with the load unless you add a rod lock. The top mount on the body bolts straight onto machine plates, the magnet carries switch signalling for free, and the 1/8" ports suit compact manifolds.
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 MARU25X140S FAQ
At 0.5 MPa: 245.3 N push and 206.1 N pull. At 0.7 MPa: 343.4 N push and 288.5 N pull. The theoretical maximum for the 25 mm bore class is 50 kgf at 1.0 MPa. Compute loads from the 0.5 MPa figures - about 147 N of usable push - and remember the piston is free to drift when air is removed.
The rolled, riveted stainless construction of the MA series keeps its seal and finish in washdown food areas, damp cellars and outdoor cabinets where coated aluminium barrels corrode and seize. Paired with the hard-chrome rod, the MARU25X140S stays smooth through the 30-800 mm/s speed range season after season.
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