Airtac MARU Stainless Steel Mini Cylinder MARU25X350S
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU25X350S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø25mm bore and 350mm 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
- Stroke350 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 MARU25X350S
At 350 mm of stroke, the MARU25X350S reaches deep into guards and machine frames while staying a compact 25 mm bore package. AirTAC built this double-acting round-body cylinder around its own top bracket - the cover is riveted to the stainless barrel, forming one sealed unit you bolt on directly. Push force at 0.5 MPa is 245 N, rising to 343 N at 0.7 MPa, with a theoretical ceiling of 50 kgf at 1.0 MPa.
Because the variable cushion works at both ends, a long stroke does not have to mean a hard stop: trim the needles on first run-up and even a fast 800 mm/s return lands quietly. Plan continuous work around 147 N at 0.5 MPa instead of the full rating, and note the 10 mm rod is hard-chrome plated to 20 um so it survives damp or dusty corners that rust plain steel pins. Switching is simple too - the magnet ships inside every cylinder for CMSG, DMSG or EMSG switches.
Airtac MARU Stainless Steel Mini Cylinder MARU25X350S Technical Specifications
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU25X350S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 350 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 MARU25X350S
| 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. |
| ×350 | 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 MARU25X350S Is Used
Tray extraction from storage racks
350 mm of stroke pulls a tote tray out of a 400 mm deep shelf lane; around 147 N of usable force at 0.5 MPa slides a 10 kg loaded tote along the rollers.
Lane diverter on a bottling line
The long rod sweeps empty PET bottles across three lanes at up to 800 mm/s, with both-end cushions absorbing the lateral stop without a bang.
Slide extension on a machine guard door
Opens a sliding polycarbonate guard 350 mm before cycle start; the standard magnet drives two EMSG switches to prove both full open and closed.
Is the Airtac MARU Stainless Steel Mini Cylinder MARU25X350S the Right Cylinder?
Choose by force first: 157 N at 0.5 MPa from the 20 mm bore, 245 N here, and 402 N from the 32 mm MARU32X350S. Long strokes amplify side loads, so hang the load on external guides and let the M10x1.25 rod thread take only axial force; I / Y knuckles are available if the joint must swing. The cushion trims end shock but the piston will drift if air is lost - a rod lock is the answer for safe holds. If you would rather machine your own mounting, the MAC series separates flange and foot from the cushioned body, and MACD adds a double rod. Standard magnet works with CMSG / DMSG / EMSG sensors.
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 MARU25X350S FAQ
The MARU25X350S is a 25 mm bore, 350 mm stroke double-acting unit. At 0.5 MPa it pushes 245 N and pulls 206 N; at 0.7 MPa those rise to 343 N and 289 N. Theoretical maximum is 50 kgf at 1.0 MPa. Rod is 10 mm with an M10x1.25 thread, ports are 1/8", and this stroke is still within the 500 mm standard range for the bore.
Variable air cushions sit at both ends. Needle screws on the covers meter the exhaust to absorb piston momentum, so a 350 mm run at up to 800 mm/s decelerates gently instead of hammering the covers - start them nearly closed and open until the landing is clean. The cushion softens the stop only; it does not lock the rod if air is lost, so fit a rod lock where a hold is needed.
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