Airtac MARU Stainless Steel Mini Cylinder MARU20X270S
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU20X270S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø20mm 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.
- BoreØ20 mm
- Stroke270 mm
- Port size1/8"
- Acting typeDouble acting + cushion (up mount)
- Rod threadM8×1.25
- CushionVariable air cushion, both ends
About the Airtac MARU Stainless Steel Mini Cylinder MARU20X270S
Inside the 270 mm MARU20X270S is the proven MA recipe: a stainless round tube, aluminium end covers, and a carbon-steel rod hard-chrome plated to 20 um, all riveted into one sealed unit. Air works both sides of the piston - double acting - with an adjustable cushion at each end, and the up/top bracket is built into the front cover itself. At the common 0.5 MPa shop setting you get 157 N forward and 131.9 N return; at 0.7 MPa that climbs to 219.8 N forward.
Because the magnet is fitted as standard, CMSG, DMSG and EMSG switches mount on the barrel with no special-order piston. Take roughly 60 percent of the 157 N rating - about 94 N - as your working force at 0.5 MPa and size tooling to that. The variable cushion is worth real money on a 270 mm stroke: dial the needle screws so a fast-moving mass decelerates smoothly instead of cracking the cover. Air supply should be filtered to 40 um; pressure 0.15-1.0 MPa (22-145 psi), speed 30-800 mm/s.
Airtac MARU Stainless Steel Mini Cylinder MARU20X270S Technical Specifications
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU20X270S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 270 mm |
| Acting type | Double acting + cushion (up mount) |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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 (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | 185 N |
| Max (@1.0 MPa) | 32 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 MARU20X270S
| MAR | Standard round-body mini cylinder (double-acting, integrated mount, variable cushion). |
|---|---|
| U | Front-cover mount: U = up (top) mounting. |
| 20 | 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.
Where the Airtac MARU Stainless Steel Mini Cylinder MARU20X270S Is Used
Lab autoloader sample lift
Lifts sample trays of up to about 8 kg equivalent through 270 mm of vertical travel; the cushioned top end sets trays down gently onto the analyser deck.
Press part ejector
Pushes stamped parts out of a small die after the press stroke; 157 N at 0.5 MPa is ample for thin-gauge brackets.
Gate diverter on a sorting chute
Swings a chute flap between two lanes; the cushion absorbs the flap's momentum at both ends of travel.
Is the Airtac MARU Stainless Steel Mini Cylinder MARU20X270S the Right Cylinder?
At 157 N push (0.5 MPa) this is the light-duty end of the MAR range; loads beyond roughly 94 N of real work should move to a 25 mm bore (245 N) or a 32 mm bore (402 N). The 270 mm stroke is long for an 8 mm rod, so support the load on an external guide rather than letting the rod take side thrust; an I or Y knuckle on the M8x1.25 thread suits pivoting linkages. Remember the cylinder does not lock on air loss - the piston will drift, so specify a rod lock where a held mid-position matters. Port is 1/8" and the built-in magnet is ready for CMSG/DMSG/EMSG switches.
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 MARU20X270S FAQ
Push 157 N and pull 131.9 N at 0.5 MPa; push 219.8 N and pull 184.7 N at 0.7 MPa; theoretical peak 32 kgf at 1.0 MPa. Bore 20 mm, rod 8 mm (M8x1.25), port 1/8", stroke 270 mm.
The hard-chrome rod resists corrosion, but side load is what kills thin rods. Keep the payload on its own linear guide, use an I or Y knuckle for pivoting motion, and set the end cushions so the load decelerates over the final travel instead of stopping dead.
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