Airtac MARU Stainless Steel Mini Cylinder MARU20X90S
The AirTAC Airtac MARU Stainless Steel Mini Cylinder MARU20X90S is a genuine double acting + cushion (up mount) standard round-body mini air cylinder with a Ø20mm bore and 90mm 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
- Stroke90 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 MARU20X90S
Ninety millimetres of stroke in a 20 mm bore makes the MARU20X90S a tidy choice for slim pick-and-place fingers and light gates. This is AirTAC's round-body MA family at its most compact: a stainless barrel with rolled-in aluminium covers, a hard-chrome plated rod, and double-acting air with a variable cushion at both stroke ends. The up-facing (U) bracket integrated in the front cover bolts straight to the plate, with no separate foot bracket to buy.
Force at 0.5 MPa is 157 N out and 132 N back, rising to 220 N at 0.7 MPa; the 1.0 MPa theoretical figure is 32 kgf. Budget around 94 N for actual work, six tenths of the rated push, so the cylinder runs cool and lasts. The built-in magnet is standard, letting CMSG, DMSG or EMSG switches read stroke position without any factory special, and speed spans 30-800 mm/s on 0.15-1.0 MPa (22-145 psi).
Airtac MARU Stainless Steel Mini Cylinder MARU20X90S Technical Specifications
| Model | Airtac MARU Stainless Steel Mini Cylinder MARU20X90S |
|---|---|
| Series | MAR mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 90 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 MARU20X90S
| 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. |
| ×90 | 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 MARU20X90S Is Used
Lab sampler arm
Dips a sampling probe into a test trough; the stainless barrel shrugs off splashes that would corrode a painted mini cylinder.
Fixture nest clamp
Clamps small aluminium brackets into a CNC drill jig, where the 90 mm stroke clears the loading hand and about 94 N of working force is plenty.
Sorting gate
Diverts small parcels on a sorter, with a CMSG switch confirming gate position at both ends of the 90 mm stroke.
Is the Airtac MARU Stainless Steel Mini Cylinder MARU20X90S the Right Cylinder?
Twenty millimetres is the floor of the MAR range, so oversizing means the 25 mm bore and its 245 N push at 0.5 MPa. Do not ask this cylinder to hold a position against gravity or a spring load, because on air loss the piston simply drifts; specify a rod lock cylinder for that job. The 1/8" ports and M8x1.25 rod thread keep plumbing light, and I or Y knuckles thread on where the load must 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 MARU20X90S FAQ
Push 157 N and pull 132 N at 0.5 MPa; push 220 N and pull 185 N at 0.7 MPa; 32 kgf theoretical maximum at 1.0 MPa. Bore is 20 mm, rod 8 mm with M8x1.25 thread, air ports 1/8", speed 30-800 mm/s.
No. Every MARU20X90S ships with the piston magnet built in as standard. Clip on a CMSG, DMSG or EMSG switch and you get end-of-stroke or mid-stroke signals straight away, at no extra piston cost.
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