Airtac MARU Stainless Steel Mini Cylinder MARU20X280S
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU20X280S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø20mm 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.
- BoreØ20 mm
- Stroke280 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 MARU20X280S
Need reach without heavy force? The MARU20X280S spans 280 mm of stroke on a 20 mm bore, delivering 157 N push and 131.9 N pull at 0.5 MPa - enough to move a load of roughly 94 N in real service, or lift about 8 kg vertically with a 2:1 margin. Its riveted round body pairs a stainless barrel with an aluminium cover set and a 20 um hard-chrome rod, and the up-mount bracket is rolled in as part of the front cover.
Both ends carry an adjustable air cushion, so at speeds up to 800 mm/s the stroke ends stay quiet even with a swinging or sliding mass attached. Pressure window is 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), temperature -20 to +70 C. At 0.7 MPa the push climbs to 219.8 N. Position feedback is easy: the magnet is built in as standard, and CMSG / DMSG / EMSG reed switches slide along the barrel.
Airtac MARU Stainless Steel Mini Cylinder MARU20X280S Technical Specifications
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU20X280S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 280 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 MARU20X280S
| 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. |
| ×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 MARU20X280S Is Used
Case-eject paddle on a sealer
Swings a paddle to tip finished cases off the infeed; the 280 mm reach clears a wide conveyor and 94 N of working force moves the case easily.
Vision camera vertical riser
Carries a compact inspection camera up and down 280 mm; about 8 kg of safe vertical lift covers camera, bracket and cabling.
Damping-fluid metering gate
Opens a small metering gate on a process line; the cushion stops the gate seat from taking an impact at every cycle.
Is the Airtac MARU Stainless Steel Mini Cylinder MARU20X280S the Right Cylinder?
This 20 mm bore tops out at 157 N push (0.5 MPa); if your calculation needs more, the 25 mm bore gives 245 N and the 50 mm bore 981 N in the same MAR family. Because 280 mm is a long lever for an 8 mm rod, decouple side loads with an external guide or a Y knuckle on the M8x1.25 thread, and fit the up bracket to a flat machined face. Position holding is not built in - without air the piston drifts - so a rod lock is the answer where a suspended load must wait. Air connection is 1/8" for all bores up to 40 mm.
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 MARU20X280S FAQ
Push 157 N and pull 131.9 N at 0.5 MPa; 219.8 N push at 0.7 MPa; 32 kgf theoretical maximum at 1.0 MPa. Bore 20 mm, stroke 280 mm, rod 8 mm, rod thread M8x1.25, port 1/8", speed 30-800 mm/s, pressure 0.15-1.0 MPa (22-145 psi).
Needle screws sit at both cover ends. Run the cylinder slowly first, then open or close the needles until the load decelerates smoothly into each end. Correct setting removes the metal-to-metal knock at full speed and lets you push the cycle rate up.
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