
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU25X270S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø25mm bore and 270mm 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.
Long travel in a mini format: the MARU25X270S stretches a 25 mm bore over 270 mm inside a rolled stainless-steel barrel, with the up-mount bracket riveted into the front cover so a single bolted joint does the job of cylinder plus flange. Double-acting air drives the piston both ways, and needle-adjustable cushions at each end let you soften the landings during first commissioning.
Force at 0.5 MPa is 245 N on the push stroke - about 147 N once you reserve margin for real work - and the same bore will lift roughly 12 kg vertically at a 2:1 design ratio. The hard-chrome carbon-steel rod resists washdown and humidity far better than painted minis, and because the magnet ships standard, CMSG / DMSG / EMSG switches drop straight on for position feedback along the full 270 mm travel.
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU25X270S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 270 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.
| 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.
| 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. |
| ×270 | 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.
Swing a sorting gate across a 270 mm conveyor lane to divert parcels between two chutes; 245 N at 0.5 MPa moves the gate even with light parcel contact against it.
Raise a pile of bakery trays off a lower shelf - this bore equals about 12 kg of vertical lift at a 2:1 margin, enough for a loaded tray stack of that size.
Open the hinged lid of a benchtop curing oven through its full travel with a lever linkage; tune the cushion needle so the lid glides to the end stop instead of banging.
With 270 mm of stroke, side loads matter: guide the load externally or keep thrust in line with the rod, because a 10 mm rod unsupported over a long span will bend under offset force. Compare neighbours at the same 0.5 MPa supply - the 20 mm bore gives 157 N and the 32 mm bore gives 402 N, against 245 N here. Lost air means the rod will drift rather than hold, so fit a rod-lock cylinder for suspended loads. The front up-bracket is integral, so no separate flange part number is needed, and the standard magnet accepts CMSG / DMSG / EMSG switches at any point on the barrel.
Quick checklist
Expect 245.3 N of push and 206.1 N of pull at 0.5 MPa, climbing to 343.4 N and 288.5 N at 0.7 MPa, with a theoretical maximum of 50 kgf at 1.0 MPa. The bore is 25 mm, the rod 10 mm threaded M10x1.25, the ports 1/8", and it runs on 0.15-1.0 MPa (22-145 psi) filtered air at 30-800 mm/s between -20 and +70 C.
Yes for mild exposure. The barrel is stainless steel rather than painted steel or aluminium, the covers are corrosion-resistant aluminium alloy, and the rod carries a 20 um hard-chrome plate. That combination tolerates damp food-line splashes and outdoor humidity far better than painted minis; keep high-pressure jetting and aggressive solvents off the seals.
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