Airtac MARU Stainless Steel Mini Cylinder MARU25X125S
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU25X125S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø25mm bore and 125mm 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
- Stroke125 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 MARU25X125S
AirTAC builds the MARU25X125S as a riveted round-body mini cylinder: a 25 mm stainless barrel with aluminium covers, a 125 mm stroke, and a front up/top bracket that is part of the casting package rather than a bolt-on accessory. It is double acting - air drives the rod both out and back - and each end carries a variable air cushion you trim with needle screws on commissioning.
At 0.5 MPa the bore pushes 245.3 N, which reads as about 147 N of practical working force once you keep a comfortable margin under the rating. The hard-chrome plated rod shrugs off moisture in humid plants, and because the piston magnet comes as standard equipment, adding DMSG or EMSG switches for position checks costs nothing extra at order time.
Airtac MARU Stainless Steel Mini Cylinder MARU25X125S Technical Specifications
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU25X125S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 125 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 MARU25X125S
| 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. |
| ×125 | 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 MARU25X125S Is Used
Tablet counter gate
Drops a stopper gate in a pharmaceutical tablet counting chute; the 125 mm stroke clears the counting head and the cushion keeps the gate from chattering.
Coffee capsule lid press
Presses foil lids onto capsules on a packaging carousel, where 245 N at 0.5 MPa seats the seal without crushing the pod.
Fixture clamp signal loop
Clamps small aluminium housings in a CNC jig and reports clamp state through an EMSG switch riding on the standard magnet.
Is the Airtac MARU Stainless Steel Mini Cylinder MARU25X125S the Right Cylinder?
Compare thrust before you commit: the next size down (20 mm bore) gives 157.0 N at 0.5 MPa and the next size up (32 mm bore) gives 402.2 N, so the 25 mm class fits jobs needing roughly 150 to 390 N of raw push at typical shop pressure. Over the 125 mm stroke, watch side loads - keep them low or guide the load externally, since a long thin rod bends before it breaks.
Without air the piston simply drifts; there is no holding brake in this cylinder, so a rod lock is the answer when position must survive a pressure drop. The built-in top mount accepts the machine plate directly, the magnet pairs with CMSG/EMSG sensing, and ports are 1/8".
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 MARU25X125S FAQ
Push at 0.5 MPa is 245.3 N and pull at 0.5 MPa is 206.1 N. Raise supply to 0.7 MPa and push becomes 343.4 N, pull 288.5 N. The bore tops out at a theoretical 50 kgf at 1.0 MPa. Real work should stay near 147 N of that 0.5 MPa push figure so seals and cushion last their full life.
Needle screws at both stroke ends meter the exhaust air, absorbing the deceleration shock so you can run the 30-800 mm/s speed range harder or carry heavier loads without hammering the aluminium covers. Adjust them on first run - start nearly closed, then open until the motion stops crisply without bounce.
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