Airtac MARU Stainless Steel Mini Cylinder MARU40X270S
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU40X270S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø40mm 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.
- BoreØ40 mm
- Stroke270 mm
- Port size1/8"
- Acting typeDouble acting + cushion (up mount)
- Rod threadM12×1.25
- CushionVariable air cushion, both ends
About the Airtac MARU Stainless Steel Mini Cylinder MARU40X270S
AirTAC builds the MARU40X270S as a riveted, round-body mini cylinder: a stainless-steel barrel rolled onto aluminium covers, a 16 mm hard-chrome plated rod, double-acting power, a variable air cushion at each end and its own integrated top (U) bracket. Push at 0.5 MPa is 628 N against 528 N on the retract side; at 0.7 MPa the push figure reaches 880 N.
The cushion needles let you soften the 270 mm stroke ends during first run-up, so faster cycling or heavier loads stop without hammering the covers. Aim for about 377 N of continuous work at 0.5 MPa; that is roughly a 32 kg vertical lift with a 2:1 margin. The standard-built magnet accepts CMSG, DMSG and EMSG switches anywhere along the barrel.
Airtac MARU Stainless Steel Mini Cylinder MARU40X270S Technical Specifications
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU40X270S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 270 mm |
| Acting type | Double acting + cushion (up mount) |
| Port size | 1/8" |
| Rod thread | M12×1.25 |
| 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | 739 N |
| Max (@1.0 MPa) | 128 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 MARU40X270S
| MAR | Standard round-body mini cylinder (double-acting, integrated mount, variable cushion). |
|---|---|
| U | Front-cover mount: U = up (top) mounting. |
| 40 | 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 MARU40X270S Is Used
Checkweigher reject kicker
Knocking underweight packs off a food-line checkweigher; the 628 N push clears the diverter well inside the station cycle.
Welding fixture clamp arm
Swinging a clamp arm onto brackets; dual cushions keep the arm quiet at both ends of the 270 mm travel.
Case sealer flap roller
Pressing the top flap roller on a carton sealer, with the integrated top bracket carrying the reaction load straight into the frame.
Is the Airtac MARU Stainless Steel Mini Cylinder MARU40X270S the Right Cylinder?
At the same 0.5 MPa supply, a 32 mm MAR pushes 402 N and a 50 mm MAR pushes 981 N - this 40 mm bore lands in between at 628 N, so size down if force is slack or up if the load stalls. Do not count on the cylinder to hold a mid-stroke load when air drops; the piston drifts, and only a rod lock prevents that. The U front bracket removes the need for a separate flange or foot, and the 270 mm stroke should run on an external guide whenever the load can tilt or twist.
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 MARU40X270S FAQ
Push is 628 N and pull 528 N at 0.5 MPa; at 0.7 MPa it delivers 880 N push and 739 N pull; the 1.0 MPa theoretical maximum is 128.1 kgf. Ports are 1/8", the rod is 16 mm with M12x1.25 male thread, and the 270 mm stroke runs at 30-800 mm/s on 0.15-1.0 MPa (22-145 psi) air.
Two needle screws at the covers set the variable air cushion. On start-up, open them fully, then close gradually until the 270 mm stroke ends land smoothly - fully closed settings waste cycle time, fully open settings hammer the aluminium covers.
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