Airtac MARU Stainless Steel Mini Cylinder MARU20X80S
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU20X80S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø20mm bore and 80mm 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
- Stroke80 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 MARU20X80S
For light clamping and pushing jobs that need an 80 mm reach, the MARU20X80S pairs a 20 mm stainless round barrel with a double-acting piston and a variable air cushion at both ends. The U in the code means the front cover carries its own up/top mounting bracket, so the cylinder bolts straight onto the machine without a separate flange or foot. A magnet ships built in as standard, ready for CMSG, DMSG or EMSG switches.
At 0.5 MPa it pushes with 157 N and pulls with 132 N; at 0.7 MPa the push rises to 220 N, and the theoretical ceiling is 32 kgf at 1.0 MPa. Plan real work at about 94 N, which is six tenths of the 0.5 MPa rating, and the seals and cushion see kind treatment. The stainless tube and hard-chrome plated 8 mm rod shrug off washdown and damp air that would rust painted minis, running 30-800 mm/s on 0.15-1.0 MPa (22-145 psi).
Airtac MARU Stainless Steel Mini Cylinder MARU20X80S Technical Specifications
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU20X80S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 80 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 MARU20X80S
| 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. |
| ×80 | 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 MARU20X80S Is Used
Conveyor gate
Swings or pushes a stop gate on a bottling line conveyor, where the 80 mm stroke clears the lane and washdown spray hits the barrel daily.
Carton kicker
Kicks small cartons off a checkweigher belt; 157 N at 0.5 MPa moves a 6 kg box with margin to spare.
End-of-stroke signal
Drives a light fixture nest and reports both ends via a CMSG switch clipped onto the stainless barrel, no special-order piston needed.
Is the Airtac MARU Stainless Steel Mini Cylinder MARU20X80S the Right Cylinder?
Twenty millimetres is the smallest MAR bore, so step up when force runs short: a 25 mm bore pushes 245 N at 0.5 MPa against this model's 157 N. Like any double-acting cylinder it drifts if air is lost, so add a rod lock where a position must hold. The 1/8" ports take standard fittings, the rod end is M8x1.25 male thread, and I or Y knuckles fit when the load needs a swivel.
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 MARU20X80S FAQ
At 0.5 MPa it pushes 157 N and pulls 132 N; at 0.7 MPa the push reaches 220 N (pull 185 N); the theoretical maximum is 32 kgf at 1.0 MPa. Ports are 1/8", the rod is 8 mm with M8x1.25 male thread, and stroke speed runs 30-800 mm/s.
Yes. The variable air cushion at both ends is adjusted with the needle screws during commissioning. Dial it in and the 80 mm stroke lands soft even at speed, protecting the aluminium covers from end-of-stroke shock.
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