Airtac MARU Stainless Steel Mini Cylinder MARU25X280S
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU25X280S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø25mm bore and 280mm 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
- Stroke280 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 MARU25X280S
Reach without bulk is the brief for the MARU25X280S: 280 mm of stroke from a 25 mm bore in a rolled, riveted stainless body. Because the up-mount flange is integral to the front cover, the cylinder bolts directly to the machine frame with no foot bracket and no adapter plate. Air drives the rod both ways and twin adjustable cushions absorb end-of-stroke shock at speed.
The 0.5 MPa push rating is 245 N, which translates to about 147 N of dependable working force and roughly 12 kg of vertical lift at a 2:1 ratio. Washdown-friendly construction - a stainless barrel with a 20 um hard-chrome plated rod - suits damp food and packaging lines, and the built-in magnet pairs with CMSG / DMSG / EMSG switches out of the box.
Airtac MARU Stainless Steel Mini Cylinder MARU25X280S Technical Specifications
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU25X280S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 280 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 MARU25X280S
| 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. |
| ×280 | 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 MARU25X280S Is Used
Hopper slide gate on a roaster cooler
Open and close the slide gate under a coffee-roaster cooling hopper; the 280 mm stroke covers the full gate travel and 245 N at 0.5 MPa shifts the gate against bed pressure.
Corrugated blank squaring
Index bundles of corrugated blanks on a die-cutter outfeed, squaring a 280 mm-deep pile against the backstop before the strapper fires.
Machine-guard slide
Drive a sliding machine guard across a milling spindle; the cushion stops the 280 mm panel softly and the standard magnet confirms the closed position to the PLC.
Is the Airtac MARU Stainless Steel Mini Cylinder MARU25X280S the Right Cylinder?
Between the 20 mm bore (157 N push at 0.5 MPa) and the 32 mm bore (402 N), this 25 mm cylinder at 245 N covers mid-force jobs up to roughly 147 N of continuous work. At 280 mm of stroke, avoid cantilevered side loads - run the load on linear guides and keep thrust axial to protect the hard-chrome rod from bending. If the application must hold position through a power loss, this is not the fit: the piston moves freely when air bleeds away, so step to a rod-lock model. The up-mount is integral to the front cover, and I or Y knuckles still thread onto the M10x1.25 male rod thread.
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 MARU25X280S FAQ
At 0.5 MPa it delivers 245.3 N pushing and 206.1 N pulling; at 0.7 MPa the pair becomes 343.4 N and 288.5 N; the theoretical peak is 50 kgf at 1.0 MPa. Fit 1/8" fittings to the 25 mm bore, thread M10x1.25 accessories onto the 10 mm rod, and keep air at 0.15-1.0 MPa (22-145 psi) with speeds of 30-800 mm/s from -20 to +70 C.
None beyond bolts. The up (top) mounting bracket is rolled into the front cover as part of the cylinder, so there is no separate flange or foot accessory to buy. If the linkage needs a swivel joint, I or Y rod knuckles thread onto the M10x1.25 male rod thread. Position holding on air loss is not part of the design - the piston drifts - so add a rod-lock cylinder where the load must stay put.
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